[PATCH] build: remove GCC7 support

Paul Spooren mail at aparcar.org
Fri Mar 26 09:31:30 GMT 2021



On Fr, Mär 26, 2021 at 02:28, Rosen Penev <rosenp at gmail.com> wrote:
> On Fri, Mar 26, 2021 at 1:49 AM Paul Spooren <mail at aparcar.org> wrote:
>> 
>>  Since we recently branched a new release which already ships with 
>> GCC7,
>>  version 6 could be considered obsolete.
> version 6?

Subject is right, body is wrong. So it's about removing GCC7 support 
because for the latest release GCC8 is used.

> 
> Could also mention GCC7 does not support std::filesystem , which is
> needed by some programs such as gerbera in the packages feed. That's
> actually why I don't backport gerbera to 19.07.
>> 
>>  Signed-off-by: Paul Spooren <mail at aparcar.org>
> Acked-by: Rosen Penev <rosenp at gmail.com>
>>  ---
>>   toolchain/gcc/Config.in                       |   4 -
>>   toolchain/gcc/Config.version                  |  10 -
>>   toolchain/gcc/common.mk                       |   4 -
>>   .../001-revert_register_mode_search.patch     |  77 --------
>>   .../patches/7.5.0/002-case_insensitive.patch  |  24 ---
>>   .../gcc/patches/7.5.0/010-documentation.patch |  35 ----
>>   .../patches/7.5.0/110-Fix-MIPS-PR-84790.patch |  20 --
>>   .../gcc/patches/7.5.0/230-musl_libssp.patch   |  28 ---
>>   .../300-mips_Os_cpu_rtx_cost_model.patch      |  21 --
>>   .../7.5.0/800-arm_v5te_no_ldrd_strd.patch     |  32 ----
>>   .../7.5.0/810-arm-softfloat-libgcc.patch      |  33 ----
>>   .../gcc/patches/7.5.0/820-libgcc_pic.patch    |  44 -----
>>   .../7.5.0/840-armv4_pass_fix-v4bx_to_ld.patch |  28 ---
>>   .../patches/7.5.0/850-use_shared_libgcc.patch |  54 ------
>>   .../patches/7.5.0/851-libgcc_no_compat.patch  |  22 ---
>>   .../patches/7.5.0/870-ppc_no_crtsavres.patch  |  18 --
>>   .../gcc/patches/7.5.0/881-no_tm_section.patch |  22 ---
>>   .../patches/7.5.0/900-bad-mips16-crt.patch    |  30 ---
>>   .../gcc/patches/7.5.0/910-mbsd_multi.patch    | 146 --------------
>>   .../7.5.0/920-specs_nonfatal_getenv.patch     |  22 ---
>>   .../7.5.0/930-fix-mips-noexecstack.patch      | 111 -----------
>>   ...ibffi-fix-MIPS-softfloat-build-issue.patch | 175 
>> -----------------
>>   .../7.5.0/940-no-clobber-stamp-bits.patch     |  33 ----
>>   .../7.5.0/950-cpp_file_path_translation.patch | 181 
>> ------------------
>>   ...mpilation-when-making-cross-compiler.patch |  73 -------
>>   25 files changed, 1247 deletions(-)
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/001-revert_register_mode_search.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/002-case_insensitive.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/010-documentation.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/110-Fix-MIPS-PR-84790.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/230-musl_libssp.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/300-mips_Os_cpu_rtx_cost_model.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/800-arm_v5te_no_ldrd_strd.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/810-arm-softfloat-libgcc.patch
>>   delete mode 100644 toolchain/gcc/patches/7.5.0/820-libgcc_pic.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/840-armv4_pass_fix-v4bx_to_ld.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/850-use_shared_libgcc.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/851-libgcc_no_compat.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/870-ppc_no_crtsavres.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/881-no_tm_section.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/900-bad-mips16-crt.patch
>>   delete mode 100644 toolchain/gcc/patches/7.5.0/910-mbsd_multi.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/920-specs_nonfatal_getenv.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/930-fix-mips-noexecstack.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/940-no-clobber-stamp-bits.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/950-cpp_file_path_translation.patch
>>   delete mode 100644 
>> toolchain/gcc/patches/7.5.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
>> 
>>  diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
>>  index f0fc31d567..1f22b35bc6 100644
>>  --- a/toolchain/gcc/Config.in
>>  +++ b/toolchain/gcc/Config.in
>>  @@ -6,10 +6,6 @@ choice
>>          help
>>            Select the version of gcc you wish to use.
>> 
>>  -       config GCC_USE_VERSION_7
>>  -               bool "gcc 7.x"
>>  -               depends on !arc
>>  -
>>          config GCC_USE_VERSION_8
>>                  bool "gcc 8.x"
>> 
>>  diff --git a/toolchain/gcc/Config.version 
>> b/toolchain/gcc/Config.version
>>  index 967ce9e489..3db4b90e21 100644
>>  --- a/toolchain/gcc/Config.version
>>  +++ b/toolchain/gcc/Config.version
>>  @@ -1,7 +1,3 @@
>>  -config GCC_VERSION_7
>>  -       default y if GCC_USE_VERSION_7
>>  -       bool
>>  -
>>   config GCC_VERSION_9
>>          default y if GCC_USE_VERSION_9
>>          bool
>>  @@ -12,12 +8,6 @@ config GCC_VERSION_10
>> 
>>   config GCC_VERSION
>>          string
>>  -       default "7.5.0"         if GCC_VERSION_7
>>          default "9.3.0"         if GCC_VERSION_9
>>          default "10.2.0"        if GCC_VERSION_10
>>          default "8.4.0"
>>  -
>>  -config GCC_USE_IREMAP
>>  -       bool
>>  -       default y if GCC_USE_VERSION_7
>>  -       default n
>>  diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
>>  index 55fad1fcc4..2107c8afba 100644
>>  --- a/toolchain/gcc/common.mk
>>  +++ b/toolchain/gcc/common.mk
>>  @@ -28,10 +28,6 @@ GCC_DIR:=$(PKG_NAME)-$(PKG_VERSION)
>>   PKG_SOURCE_URL:=@GNU/gcc/gcc-$(PKG_VERSION)
>>   PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
>> 
>>  -ifeq ($(PKG_VERSION),7.5.0)
>>  -  
>> PKG_HASH:=b81946e7f01f90528a1f7352ab08cc602b9ccc05d4e44da4bd501c5a189ee661
>>  -endif
>>  -
>>   ifeq ($(PKG_VERSION),8.4.0)
>>     
>> PKG_HASH:=e30a6e52d10e1f27ed55104ad233c30bd1e99cfb5ff98ab022dc941edd1b2dd4
>>   endif
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/001-revert_register_mode_search.patch 
>> b/toolchain/gcc/patches/7.5.0/001-revert_register_mode_search.patch
>>  deleted file mode 100644
>>  index 63e3fee003..0000000000
>>  --- 
>> a/toolchain/gcc/patches/7.5.0/001-revert_register_mode_search.patch
>>  +++ /dev/null
>>  @@ -1,77 +0,0 @@
>>  -commit 31285a20390a5e53a74a2a71d1b5c82f366ddd5a
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Tue May 6 11:49:05 2014 +0000
>>  -
>>  -    gcc: revert an upstream patch that is causing a regression on 
>> powerpc
>>  -
>>  -    https://forum.openwrt.org/viewtopic.php?pid=232494#p232494
>>  -
>>  -    Signed-off-by: Felix Fietkau <nbd at openwrt.org>
>>  -
>>  -    SVN-Revision: 40709
>>  -
>>  -Revert of:
>>  -
>>  -commit 275035b56823b26d5fb7e90fad945b998648edf2
>>  -Author: bergner <bergner at 138bc75d-0d04-0410-961f-82ee72b054a4>
>>  -Date:   Thu Sep 5 14:09:07 2013 +0000
>>  -
>>  -        PR target/58139
>>  -        * reginfo.c (choose_hard_reg_mode): Scan through all mode 
>> classes
>>  -        looking for widest mode.
>>  -
>>  -
>>  -    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 
>> 138bc75d-0d04-0410-961f-82ee72b054a4
>>  -
>>  -
>>  ---- a/gcc/reginfo.c
>>  -+++ b/gcc/reginfo.c
>>  -@@ -637,35 +637,40 @@ choose_hard_reg_mode (unsigned int regno
>>  -        mode = GET_MODE_WIDER_MODE (mode))
>>  -     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
>>  -       && HARD_REGNO_MODE_OK (regno, mode)
>>  --      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode))
>>  --      && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
>>  -+      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode)))
>>  -       found_mode = mode;
>>  -
>>  -+  if (found_mode != VOIDmode)
>>  -+    return found_mode;
>>  -+
>>  -   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
>>  -        mode != VOIDmode;
>>  -        mode = GET_MODE_WIDER_MODE (mode))
>>  -     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
>>  -       && HARD_REGNO_MODE_OK (regno, mode)
>>  --      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode))
>>  --      && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
>>  -+      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode)))
>>  -       found_mode = mode;
>>  -
>>  -+  if (found_mode != VOIDmode)
>>  -+    return found_mode;
>>  -+
>>  -   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
>>  -        mode != VOIDmode;
>>  -        mode = GET_MODE_WIDER_MODE (mode))
>>  -     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
>>  -       && HARD_REGNO_MODE_OK (regno, mode)
>>  --      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode))
>>  --      && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
>>  -+      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode)))
>>  -       found_mode = mode;
>>  -
>>  -+  if (found_mode != VOIDmode)
>>  -+    return found_mode;
>>  -+
>>  -   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
>>  -        mode != VOIDmode;
>>  -        mode = GET_MODE_WIDER_MODE (mode))
>>  -     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
>>  -       && HARD_REGNO_MODE_OK (regno, mode)
>>  --      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode))
>>  --      && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
>>  -+      && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED 
>> (regno, mode)))
>>  -       found_mode = mode;
>>  -
>>  -   if (found_mode != VOIDmode)
>>  diff --git a/toolchain/gcc/patches/7.5.0/002-case_insensitive.patch 
>> b/toolchain/gcc/patches/7.5.0/002-case_insensitive.patch
>>  deleted file mode 100644
>>  index 3442076d7d..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/002-case_insensitive.patch
>>  +++ /dev/null
>>  @@ -1,24 +0,0 @@
>>  -commit 81cc26c706b2bc8c8c1eb1a322e5c5157900836e
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Sun Oct 19 21:45:51 2014 +0000
>>  -
>>  -    gcc: do not assume that the Mac OS X filesystem is case 
>> insensitive
>>  -
>>  -    Signed-off-by: Felix Fietkau <nbd at openwrt.org>
>>  -
>>  -    SVN-Revision: 42973
>>  -
>>  ---- a/include/filenames.h
>>  -+++ b/include/filenames.h
>>  -@@ -43,11 +43,6 @@ extern "C" {
>>  - #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
>>  - #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
>>  - #else /* not DOSish */
>>  --#  if defined(__APPLE__)
>>  --#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
>>  --#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
>>  --#    endif
>>  --#  endif /* __APPLE__ */
>>  - #  define HAS_DRIVE_SPEC(f) (0)
>>  - #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
>>  - #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
>>  diff --git a/toolchain/gcc/patches/7.5.0/010-documentation.patch 
>> b/toolchain/gcc/patches/7.5.0/010-documentation.patch
>>  deleted file mode 100644
>>  index 0106814f41..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/010-documentation.patch
>>  +++ /dev/null
>>  @@ -1,35 +0,0 @@
>>  -commit 098bd91f5eae625c7d2ee621e10930fc4434e5e2
>>  -Author: Luka Perkov <luka at openwrt.org>
>>  -Date:   Tue Feb 26 16:16:33 2013 +0000
>>  -
>>  -    gcc: don't build documentation
>>  -
>>  -    This closes #13039.
>>  -
>>  -    Signed-off-by: Luka Perkov <luka at openwrt.org>
>>  -
>>  -    SVN-Revision: 35807
>>  -
>>  ---- a/gcc/Makefile.in
>>  -+++ b/gcc/Makefile.in
>>  -@@ -3121,18 +3121,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
>>  - doc/gccint.info: $(TEXI_GCCINT_FILES)
>>  - doc/cppinternals.info: $(TEXI_CPPINT_FILES)
>>  -
>>  --doc/%.info: %.texi
>>  --      if [ x$(BUILD_INFO) = xinfo ]; then \
>>  --              $(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
>>  --                      -I $(gcc_docdir)/include -o $@ $<; \
>>  --      fi
>>  -+doc/%.info:
>>  -
>>  - # Duplicate entry to handle renaming of gccinstall.info
>>  --doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
>>  --      if [ x$(BUILD_INFO) = xinfo ]; then \
>>  --              $(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
>>  --                      -I $(gcc_docdir)/include -o $@ $<; \
>>  --      fi
>>  -+doc/gccinstall.info:
>>  -
>>  - doc/cpp.dvi: $(TEXI_CPP_FILES)
>>  - doc/gcc.dvi: $(TEXI_GCC_FILES)
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/110-Fix-MIPS-PR-84790.patch 
>> b/toolchain/gcc/patches/7.5.0/110-Fix-MIPS-PR-84790.patch
>>  deleted file mode 100644
>>  index 643c5e68a8..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/110-Fix-MIPS-PR-84790.patch
>>  +++ /dev/null
>>  @@ -1,20 +0,0 @@
>>  -Fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84790.
>>  -MIPS16 functions have a static assembler prologue which clobbers
>>  -registers v0 and v1. Add these register clobbers to function call
>>  -instructions.
>>  -
>>  ---- a/gcc/config/mips/mips.c
>>  -+++ b/gcc/config/mips/mips.c
>>  -@@ -3098,6 +3098,12 @@ mips_emit_call_insn (rtx pattern, rtx or
>>  -       emit_insn (gen_update_got_version ());
>>  -     }
>>  -
>>  -+  if (TARGET_MIPS16 && TARGET_USE_GOT)
>>  -+    {
>>  -+      clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), 
>> MIPS16_PIC_TEMP);
>>  -+      clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), 
>> MIPS_PROLOGUE_TEMP (word_mode));
>>  -+    }
>>  -+
>>  -   if (TARGET_MIPS16
>>  -       && TARGET_EXPLICIT_RELOCS
>>  -       && TARGET_CALL_CLOBBERED_GP)
>>  diff --git a/toolchain/gcc/patches/7.5.0/230-musl_libssp.patch 
>> b/toolchain/gcc/patches/7.5.0/230-musl_libssp.patch
>>  deleted file mode 100644
>>  index eebee9175c..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/230-musl_libssp.patch
>>  +++ /dev/null
>>  @@ -1,28 +0,0 @@
>>  -commit 1877bc9d8f2be143fbe530347a945850d0ecd234
>>  -Author: Steven Barth <cyrus at openwrt.org>
>>  -Date:   Mon Jun 22 10:31:07 2015 +0000
>>  -
>>  -    gcc/musl: rework SSP-support
>>  -
>>  -    Make musl provide libssp_nonshared.a and make GCC link it 
>> unconditionally
>>  -    if musl is used. This should be a no-op if SSP is disabled and 
>> seems to be
>>  -    the only reliable way of dealing with SSP over all packages 
>> due to the mess
>>  -    that is linkerflags handling in packages.
>>  -
>>  -    Signed-off-by: Steven Barth <steven at midlink.org>
>>  -
>>  -    SVN-Revision: 46108
>>  -
>>  ---- a/gcc/gcc.c
>>  -+++ b/gcc/gcc.c
>>  -@@ -861,7 +861,9 @@ proper position among the other output f
>>  - #endif
>>  -
>>  - #ifndef LINK_SSP_SPEC
>>  --#ifdef TARGET_LIBC_PROVIDES_SSP
>>  -+#if DEFAULT_LIBC == LIBC_MUSL
>>  -+#define LINK_SSP_SPEC "-lssp_nonshared"
>>  -+#elif defined(TARGET_LIBC_PROVIDES_SSP)
>>  - #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
>>  -                      
>> "|fstack-protector-strong|fstack-protector-explicit:}"
>>  - #else
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/300-mips_Os_cpu_rtx_cost_model.patch 
>> b/toolchain/gcc/patches/7.5.0/300-mips_Os_cpu_rtx_cost_model.patch
>>  deleted file mode 100644
>>  index 2d0ae46138..0000000000
>>  --- 
>> a/toolchain/gcc/patches/7.5.0/300-mips_Os_cpu_rtx_cost_model.patch
>>  +++ /dev/null
>>  @@ -1,21 +0,0 @@
>>  -commit ecf7671b769fe96f7b5134be442089f8bdba55d2
>>  -Author: Felix Fietkau <nbd at nbd.name>
>>  -Date:   Thu Aug 4 20:29:45 2016 +0200
>>  -
>>  -gcc: add a patch to generate better code with Os on mips
>>  -
>>  -Also happens to reduce compressed code size a bit
>>  -
>>  -Signed-off-by: Felix Fietkau <nbd at nbd.name>
>>  -
>>  ---- a/gcc/config/mips/mips.c
>>  -+++ b/gcc/config/mips/mips.c
>>  -@@ -19790,7 +19790,7 @@ mips_option_override (void)
>>  -     flag_pcc_struct_return = 0;
>>  -
>>  -   /* Decide which rtx_costs structure to use.  */
>>  --  if (optimize_size)
>>  -+  if (0 && optimize_size)
>>  -     mips_cost = &mips_rtx_cost_optimize_size;
>>  -   else
>>  -     mips_cost = &mips_rtx_cost_data[mips_tune];
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/800-arm_v5te_no_ldrd_strd.patch 
>> b/toolchain/gcc/patches/7.5.0/800-arm_v5te_no_ldrd_strd.patch
>>  deleted file mode 100644
>>  index 76200a1661..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/800-arm_v5te_no_ldrd_strd.patch
>>  +++ /dev/null
>>  @@ -1,32 +0,0 @@
>>  -commit b050f87d13b5dc7ed82feb9a90f4529de58bdf25
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Wed Feb 19 19:20:10 2014 +0000
>>  -
>>  -    gcc: prevent the use of LDRD/STRD on ARMv5TE
>>  -
>>  -    These instructions are for 64-bit load/store. On ARMv5TE, the 
>> CPU
>>  -    requires addresses to be aligned to 64-bit. When misaligned, 
>> behavior is
>>  -    undefined (effectively either loads the same word twice on 
>> LDRD, or
>>  -    corrupts surrounding memory on STRD).
>>  -
>>  -    On ARMv6 and newer, unaligned access is safe.
>>  -
>>  -    Removing these instructions for ARMv5TE is necessary, because 
>> GCC
>>  -    ignores alignment information in pointers and does unsafe 
>> optimizations
>>  -    that have shown up as bugs in various places.
>>  -
>>  -    Signed-off-by: Felix Fietkau <nbd at openwrt.org>
>>  -
>>  -    SVN-Revision: 39638
>>  -
>>  ---- a/gcc/config/arm/arm.h
>>  -+++ b/gcc/config/arm/arm.h
>>  -@@ -150,7 +150,7 @@ extern tree arm_fp16_type_node;
>>  - /* Thumb-1 only.  */
>>  - #define TARGET_THUMB1_ONLY            (TARGET_THUMB1 && 
>> !arm_arch_notm)
>>  -
>>  --#define TARGET_LDRD                   (arm_arch5e && 
>> ARM_DOUBLEWORD_ALIGN \
>>  -+#define TARGET_LDRD                   (arm_arch6 && 
>> ARM_DOUBLEWORD_ALIGN \
>>  -                                          && !TARGET_THUMB1)
>>  -
>>  - #define TARGET_CRC32                  (arm_arch_crc)
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/810-arm-softfloat-libgcc.patch 
>> b/toolchain/gcc/patches/7.5.0/810-arm-softfloat-libgcc.patch
>>  deleted file mode 100644
>>  index 5c9d86aead..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/810-arm-softfloat-libgcc.patch
>>  +++ /dev/null
>>  @@ -1,33 +0,0 @@
>>  -commit 8570c4be394cff7282f332f97da2ff569a927ddb
>>  -Author: Imre Kaloz <kaloz at openwrt.org>
>>  -Date:   Wed Feb 2 20:06:12 2011 +0000
>>  -
>>  -    fixup arm soft-float symbols
>>  -
>>  -    SVN-Revision: 25325
>>  -
>>  ---- a/libgcc/config/arm/t-linux
>>  -+++ b/libgcc/config/arm/t-linux
>>  -@@ -1,6 +1,10 @@
>>  - LIB1ASMSRC = arm/lib1funcs.S
>>  - LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx 
>> _clzsi2 _clzdi2 \
>>  --      _ctzsi2 _arm_addsubdf3 _arm_addsubsf3
>>  -+      _ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
>>  -+      _arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
>>  -+      _arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
>>  -+      _arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
>>  -+      _arm_fixsfsi _arm_fixunssfsi
>>  -
>>  - # Just for these, we omit the frame pointer since it makes such a 
>> big
>>  - # difference.
>>  ---- a/gcc/config/arm/linux-elf.h
>>  -+++ b/gcc/config/arm/linux-elf.h
>>  -@@ -58,8 +58,6 @@
>>  -    %{shared:-lc} \
>>  -    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
>>  -
>>  --#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
>>  --
>>  - #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>>  -
>>  - #define LINUX_TARGET_LINK_SPEC  "%{h*} \
>>  diff --git a/toolchain/gcc/patches/7.5.0/820-libgcc_pic.patch 
>> b/toolchain/gcc/patches/7.5.0/820-libgcc_pic.patch
>>  deleted file mode 100644
>>  index 0cc1e07e2b..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/820-libgcc_pic.patch
>>  +++ /dev/null
>>  @@ -1,44 +0,0 @@
>>  -commit c96312958c0621e72c9b32da5bc224ffe2161384
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Mon Oct 19 23:26:09 2009 +0000
>>  -
>>  -    gcc: create a proper libgcc_pic.a static library for relinking 
>> (4.3.3+ for now, backport will follow)
>>  -
>>  -    SVN-Revision: 18086
>>  -
>>  ---- a/libgcc/Makefile.in
>>  -+++ b/libgcc/Makefile.in
>>  -@@ -920,11 +920,12 @@ $(libgcov-driver-objects): %$(objext): $
>>  -
>>  - # Static libraries.
>>  - libgcc.a: $(libgcc-objects)
>>  -+libgcc_pic.a: $(libgcc-s-objects)
>>  - libgcov.a: $(libgcov-objects)
>>  - libunwind.a: $(libunwind-objects)
>>  - libgcc_eh.a: $(libgcc-eh-objects)
>>  -
>>  --libgcc.a libgcov.a libunwind.a libgcc_eh.a:
>>  -+libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
>>  -       -rm -f $@
>>  -
>>  -       objects="$(objects)";                                   \
>>  -@@ -945,7 +946,7 @@ all: libunwind.a
>>  - endif
>>  -
>>  - ifeq ($(enable_shared),yes)
>>  --all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
>>  -+all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
>>  - ifneq ($(LIBUNWIND),)
>>  - all: libunwind$(SHLIB_EXT)
>>  - libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_EXT)
>>  -@@ -1151,6 +1152,10 @@ install-shared:
>>  -       chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
>>  -       $(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
>>  -
>>  -+      $(INSTALL_DATA) libgcc_pic.a $(mapfile) 
>> $(DESTDIR)$(inst_libdir)/
>>  -+      chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
>>  -+      $(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
>>  -+
>>  -       $(subst @multilib_dir@,$(MULTIDIR),$(subst \
>>  -               @shlib_base_name@,libgcc_s,$(subst \
>>  -               
>> @shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/840-armv4_pass_fix-v4bx_to_ld.patch 
>> b/toolchain/gcc/patches/7.5.0/840-armv4_pass_fix-v4bx_to_ld.patch
>>  deleted file mode 100644
>>  index b9c9b161ad..0000000000
>>  --- 
>> a/toolchain/gcc/patches/7.5.0/840-armv4_pass_fix-v4bx_to_ld.patch
>>  +++ /dev/null
>>  @@ -1,28 +0,0 @@
>>  -commit 7edc8ca5456d9743dd0075eb3cc5b04f4f24c8cc
>>  -Author: Imre Kaloz <kaloz at openwrt.org>
>>  -Date:   Wed Feb 2 19:34:36 2011 +0000
>>  -
>>  -    add armv4 fixup patches
>>  -
>>  -    SVN-Revision: 25322
>>  -
>>  -
>>  ---- a/gcc/config/arm/linux-eabi.h
>>  -+++ b/gcc/config/arm/linux-eabi.h
>>  -@@ -88,10 +88,15 @@
>>  - #define MUSL_DYNAMIC_LINKER \
>>  -   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E 
>> "%{mfloat-abi=hard:hf}.so.1"
>>  -
>>  -+/* For armv4 we pass --fix-v4bx to linker to support EABI */
>>  -+#undef TARGET_FIX_V4BX_SPEC
>>  -+#define TARGET_FIX_V4BX_SPEC " 
>> %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
>>  -+  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
>>  -+
>>  - /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want 
>> to
>>  -    use the GNU/Linux version, not the generic BPABI version.  */
>>  - #undef  LINK_SPEC
>>  --#define LINK_SPEC EABI_LINK_SPEC                                  
>>     \
>>  -+#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC             
>>     \
>>  -   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,                    
>>             \
>>  -                      LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
>>  -
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/850-use_shared_libgcc.patch 
>> b/toolchain/gcc/patches/7.5.0/850-use_shared_libgcc.patch
>>  deleted file mode 100644
>>  index 1d07efed80..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/850-use_shared_libgcc.patch
>>  +++ /dev/null
>>  @@ -1,54 +0,0 @@
>>  -commit dcfc40358b5a3cae7320c17f8d1cebd5ad5540cd
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Sun Feb 12 20:25:47 2012 +0000
>>  -
>>  -    gcc 4.6: port over the missing patch 
>> 850-use_shared_libgcc.patch to prevent libgcc crap from leaking into 
>> every single binary
>>  -
>>  -    SVN-Revision: 30486
>>  ---- a/gcc/config/arm/linux-eabi.h
>>  -+++ b/gcc/config/arm/linux-eabi.h
>>  -@@ -126,10 +126,6 @@
>>  -   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} 
>> "   \
>>  -   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, 
>> ANDROID_ENDFILE_SPEC)
>>  -
>>  --/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, 
>> as we
>>  --   do not use -lfloat.  */
>>  --#undef LIBGCC_SPEC
>>  --
>>  - /* Clear the instruction cache from `beg' to `end'.  This is
>>  -    implemented in lib1funcs.S, so ensure an error if this 
>> definition
>>  -    is used.  */
>>  ---- a/gcc/config/linux.h
>>  -+++ b/gcc/config/linux.h
>>  -@@ -53,6 +53,10 @@ see the files COPYING3 and COPYING.RUNTI
>>  -       builtin_assert ("system=posix");                        \
>>  -     } while (0)
>>  -
>>  -+#ifndef LIBGCC_SPEC
>>  -+#define LIBGCC_SPEC 
>> "%{static|static-libgcc:-lgcc}%{!static:%{!static-libgcc:-lgcc_s}}"
>>  -+#endif
>>  -+
>>  - /* Determine which dynamic linker to use depending on whether 
>> GLIBC or
>>  -    uClibc or Bionic or musl is the default C library and whether
>>  -    -muclibc or -mglibc or -mbionic or -mmusl has been passed to 
>> change
>>  ---- a/libgcc/mkmap-symver.awk
>>  -+++ b/libgcc/mkmap-symver.awk
>>  -@@ -136,5 +136,5 @@ function output(lib) {
>>  -   else if (inherit[lib])
>>  -     printf("} %s;\n", inherit[lib]);
>>  -   else
>>  --    printf ("\n  local:\n\t*;\n};\n");
>>  -+    printf ("\n\t*;\n};\n");
>>  - }
>>  ---- a/gcc/config/rs6000/linux.h
>>  -+++ b/gcc/config/rs6000/linux.h
>>  -@@ -60,6 +60,9 @@
>>  - #undef        CPP_OS_DEFAULT_SPEC
>>  - #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
>>  -
>>  -+#undef LIBGCC_SPEC
>>  -+#define LIBGCC_SPEC "%{!static:%{!static-libgcc:-lgcc_s}} -lgcc"
>>  -+
>>  - #undef  LINK_SHLIB_SPEC
>>  - #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: 
>> %{static:-static}}"
>>  -
>>  diff --git a/toolchain/gcc/patches/7.5.0/851-libgcc_no_compat.patch 
>> b/toolchain/gcc/patches/7.5.0/851-libgcc_no_compat.patch
>>  deleted file mode 100644
>>  index d710e40717..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/851-libgcc_no_compat.patch
>>  +++ /dev/null
>>  @@ -1,22 +0,0 @@
>>  -commit 64661de100da1ec1061ef3e5e400285dce115e6b
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Sun May 10 13:16:35 2015 +0000
>>  -
>>  -    gcc: add some size optimization patches
>>  -
>>  -    Signed-off-by: Felix Fietkau <nbd at openwrt.org>
>>  -
>>  -    SVN-Revision: 45664
>>  -
>>  ---- a/libgcc/config/t-libunwind
>>  -+++ b/libgcc/config/t-libunwind
>>  -@@ -2,8 +2,7 @@
>>  -
>>  - HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
>>  -
>>  --LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
>>  --  $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
>>  -+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
>>  - LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
>>  -
>>  - # Override the default value from t-slibgcc-elf-ver and mention 
>> -lunwind
>>  diff --git a/toolchain/gcc/patches/7.5.0/870-ppc_no_crtsavres.patch 
>> b/toolchain/gcc/patches/7.5.0/870-ppc_no_crtsavres.patch
>>  deleted file mode 100644
>>  index 1b448eb5b2..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/870-ppc_no_crtsavres.patch
>>  +++ /dev/null
>>  @@ -1,18 +0,0 @@
>>  -commit d8c570a1531035c3e26bcd94741e5f5b9c36b5d9
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Mon Mar 5 00:51:01 2012 +0000
>>  -
>>  -    gcc: do not emit references to _savegpr_* and _restgpr_* on 
>> powerpc, as they are tricky to deal with wrt. libgcc. they cannot be 
>> linked dynamically
>>  -
>>  -    SVN-Revision: 30814
>>  ---- a/gcc/config/rs6000/rs6000.c
>>  -+++ b/gcc/config/rs6000/rs6000.c
>>  -@@ -26981,7 +26981,7 @@ rs6000_savres_strategy (rs6000_stack_t *
>>  -   /* Define cutoff for using out-of-line functions to save 
>> registers.  */
>>  -   if (DEFAULT_ABI == ABI_V4 || TARGET_ELF)
>>  -     {
>>  --      if (!optimize_size)
>>  -+      if (1)
>>  -       {
>>  -         strategy |= SAVE_INLINE_FPRS | REST_INLINE_FPRS;
>>  -         strategy |= SAVE_INLINE_GPRS | REST_INLINE_GPRS;
>>  diff --git a/toolchain/gcc/patches/7.5.0/881-no_tm_section.patch 
>> b/toolchain/gcc/patches/7.5.0/881-no_tm_section.patch
>>  deleted file mode 100644
>>  index a58dc27e64..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/881-no_tm_section.patch
>>  +++ /dev/null
>>  @@ -1,22 +0,0 @@
>>  -commit 565988ab47bd9b96b50608564aee2104aeb4b7ae
>>  -Author: Felix Fietkau <nbd at nbd.name>
>>  -Date:   Tue Dec 13 14:20:49 2016 +0100
>>  -
>>  -    gcc: rip out transactional memory related bloat from crtbegin
>>  -
>>  -    Slightly improves compression for each executable, saving 
>> about 4k from
>>  -    the default ar71xx rootfs
>>  -
>>  -    Signed-off-by: Felix Fietkau <nbd at nbd.name>
>>  -
>>  ---- a/libgcc/crtstuff.c
>>  -+++ b/libgcc/crtstuff.c
>>  -@@ -152,7 +152,7 @@ call_ ## FUNC (void)                           
>>             \
>>  - #endif
>>  -
>>  - #if !defined(USE_TM_CLONE_REGISTRY) && defined(OBJECT_FORMAT_ELF)
>>  --# define USE_TM_CLONE_REGISTRY 1
>>  -+# define USE_TM_CLONE_REGISTRY 0
>>  - #endif
>>  -
>>  - /* We do not want to add the weak attribute to the declarations 
>> of these
>>  diff --git a/toolchain/gcc/patches/7.5.0/900-bad-mips16-crt.patch 
>> b/toolchain/gcc/patches/7.5.0/900-bad-mips16-crt.patch
>>  deleted file mode 100644
>>  index f5cc0a74ee..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/900-bad-mips16-crt.patch
>>  +++ /dev/null
>>  @@ -1,30 +0,0 @@
>>  -commit 9dc38e48f7a6f88b7ac7bfaced91f53660204e46
>>  -Author: Florian Fainelli <florian at openwrt.org>
>>  -Date:   Fri Apr 5 12:36:06 2013 +0000
>>  -
>>  -    toolchain/gcc: .init and .fini need to pick one ISA
>>  -
>>  -    The .init and .fini sections are built by concatenating code
>>  -    fragments. Putting mips16 code in the middle of a mips32 code 
>> block
>>  -    doesn't work. Make gcc built the magic crt stuff in no-mips16 
>> mode.
>>  -
>>  -    This is specific to 4.6-linaro but is probably portable to 
>> other gcc
>>  -    flavors. Adding this to the t-libgcc-mips16 makefile fragment 
>> is a
>>  -    hack not suitable for pushing upstream, but there is no 
>> mips/t-linux
>>  -    or mips/t-uclibc and I am not going to touch gcc/configure for 
>> two
>>  -    lines.
>>  -
>>  -    Signed-off-by: Jay Carlson <nop at nop.com>
>>  -    Signed-off-by: Florian Fainelli <florian at openwrt.org>
>>  -
>>  -    SVN-Revision: 36200
>>  -
>>  ---- a/libgcc/config/mips/t-mips16
>>  -+++ b/libgcc/config/mips/t-mips16
>>  -@@ -43,3 +43,6 @@ SYNC_CFLAGS = -mno-mips16
>>  -
>>  - # Version these symbols if building libgcc.so.
>>  - SHLIB_MAPFILES += $(srcdir)/config/mips/libgcc-mips16.ver
>>  -+
>>  -+CRTSTUFF_T_CFLAGS += -mno-mips16
>>  -+CRTSTUFF_T_CFLAGS_S += -mno-mips16
>>  diff --git a/toolchain/gcc/patches/7.5.0/910-mbsd_multi.patch 
>> b/toolchain/gcc/patches/7.5.0/910-mbsd_multi.patch
>>  deleted file mode 100644
>>  index f19007ea30..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/910-mbsd_multi.patch
>>  +++ /dev/null
>>  @@ -1,146 +0,0 @@
>>  -commit 99368862e44740ff4fd33760893f04e14f9dbdf1
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Tue Jul 31 00:52:27 2007 +0000
>>  -
>>  -    Port the mbsd_multi patch from freewrt, which adds 
>> -fhonour-copts. This will emit warnings in packages that don't use 
>> our target cflags properly
>>  -
>>  -    SVN-Revision: 8256
>>  -
>>  -       This patch brings over a feature from MirBSD:
>>  -       * -fhonour-copts
>>  -         If this option is not given, it's warned (depending
>>  -         on environment variables). This is to catch errors
>>  -         of misbuilt packages which override CFLAGS themselves.
>>  -
>>  -       This patch was authored by Thorsten Glaser <tg at mirbsd.de>
>>  -       with copyright assignment to the FSF in effect.
>>  -
>>  ---- a/gcc/c-family/c-opts.c
>>  -+++ b/gcc/c-family/c-opts.c
>>  -@@ -108,6 +108,9 @@ static int class_dump_flags;
>>  - /* Whether any standard preincluded header has been preincluded.  
>> */
>>  - static bool done_preinclude;
>>  -
>>  -+/* Check if a port honours COPTS.  */
>>  -+static int honour_copts = 0;
>>  -+
>>  - static void handle_OPT_d (const char *);
>>  - static void set_std_cxx98 (int);
>>  - static void set_std_cxx11 (int);
>>  -@@ -456,6 +459,12 @@ c_common_handle_option (size_t scode, co
>>  -       flag_no_builtin = !value;
>>  -       break;
>>  -
>>  -+    case OPT_fhonour_copts:
>>  -+      if (c_language == clk_c) {
>>  -+        honour_copts++;
>>  -+      }
>>  -+      break;
>>  -+
>>  -     case OPT_fconstant_string_class_:
>>  -       constant_string_class_name = arg;
>>  -       break;
>>  -@@ -1084,6 +1093,47 @@ c_common_init (void)
>>  -       return false;
>>  -     }
>>  -
>>  -+  if (c_language == clk_c) {
>>  -+    char *ev = getenv ("GCC_HONOUR_COPTS");
>>  -+    int evv;
>>  -+    if (ev == NULL)
>>  -+      evv = -1;
>>  -+    else if ((*ev == '0') || (*ev == '\0'))
>>  -+      evv = 0;
>>  -+    else if (*ev == '1')
>>  -+      evv = 1;
>>  -+    else if (*ev == '2')
>>  -+      evv = 2;
>>  -+    else if (*ev == 's')
>>  -+      evv = -1;
>>  -+    else {
>>  -+      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
>>  -+      evv = 1; /* maybe depend this on something like 
>> MIRBSD_NATIVE?  */
>>  -+    }
>>  -+    if (evv == 1) {
>>  -+      if (honour_copts == 0) {
>>  -+        error ("someone does not honour COPTS at all in lenient 
>> mode");
>>  -+        return false;
>>  -+      } else if (honour_copts != 1) {
>>  -+        warning (0, "someone does not honour COPTS correctly, 
>> passed %d times",
>>  -+         honour_copts);
>>  -+      }
>>  -+    } else if (evv == 2) {
>>  -+      if (honour_copts == 0) {
>>  -+        error ("someone does not honour COPTS at all in strict 
>> mode");
>>  -+        return false;
>>  -+      } else if (honour_copts != 1) {
>>  -+        error ("someone does not honour COPTS correctly, passed 
>> %d times",
>>  -+         honour_copts);
>>  -+        return false;
>>  -+      }
>>  -+    } else if (evv == 0) {
>>  -+      if (honour_copts != 1)
>>  -+        inform (0, "someone does not honour COPTS correctly, 
>> passed %d times",
>>  -+         honour_copts);
>>  -+    }
>>  -+  }
>>  -+
>>  -   return true;
>>  - }
>>  -
>>  ---- a/gcc/c-family/c.opt
>>  -+++ b/gcc/c-family/c.opt
>>  -@@ -1412,6 +1412,9 @@ C++ ObjC++ Optimization Alias(fexception
>>  - fhonor-std
>>  - C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
>>  -
>>  -+fhonour-copts
>>  -+C ObjC C++ ObjC++ RejectNegative
>>  -+
>>  - fhosted
>>  - C ObjC
>>  - Assume normal C execution environment.
>>  ---- a/gcc/common.opt
>>  -+++ b/gcc/common.opt
>>  -@@ -1510,6 +1510,9 @@ fguess-branch-probability
>>  - Common Report Var(flag_guess_branch_prob) Optimization
>>  - Enable guessing of branch probabilities.
>>  -
>>  -+fhonour-copts
>>  -+Common RejectNegative
>>  -+
>>  - ; Nonzero means ignore `#ident' directives.  0 means handle them.
>>  - ; Generate position-independent code for executables if possible
>>  - ; On SVR4 targets, it also controls whether or not to emit a
>>  ---- a/gcc/opts.c
>>  -+++ b/gcc/opts.c
>>  -@@ -1954,6 +1954,9 @@ common_handle_option (struct gcc_options
>>  -                              opts, opts_set, loc, dc);
>>  -       break;
>>  -
>>  -+    case OPT_fhonour_copts:
>>  -+      break;
>>  -+
>>  -     case OPT_Wlarger_than_:
>>  -       opts->x_larger_than_size = value;
>>  -       opts->x_warn_larger_than = value != -1;
>>  ---- a/gcc/doc/invoke.texi
>>  -+++ b/gcc/doc/invoke.texi
>>  -@@ -6572,6 +6572,17 @@ This option is only supported for C and
>>  - @option{-Wall} and by @option{-Wpedantic}, which can be disabled 
>> with
>>  - @option{-Wno-pointer-sign}.
>>  -
>>  -+ at item -fhonour-copts
>>  -+ at opindex fhonour-copts
>>  -+If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
>>  -+given at least once, and warn if it is given more than once.
>>  -+If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
>>  -+given exactly once.
>>  -+If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this 
>> option
>>  -+is not given exactly once.
>>  -+The warning is quelled if @env{GCC_HONOUR_COPTS} is set to 
>> @samp{s}.
>>  -+This flag and environment variable only affect the C language.
>>  -+
>>  - @item -Wstack-protector
>>  - @opindex Wstack-protector
>>  - @opindex Wno-stack-protector
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/920-specs_nonfatal_getenv.patch 
>> b/toolchain/gcc/patches/7.5.0/920-specs_nonfatal_getenv.patch
>>  deleted file mode 100644
>>  index a0fdc5f165..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/920-specs_nonfatal_getenv.patch
>>  +++ /dev/null
>>  @@ -1,22 +0,0 @@
>>  -Author: Jo-Philipp Wich <jow at openwrt.org>
>>  -Date:   Sat Apr 21 03:02:39 2012 +0000
>>  -
>>  -    gcc: add patch to make the getenv() spec function nonfatal if 
>> requested environment variable is unset
>>  -
>>  -    SVN-Revision: 31390
>>  -
>>  ---- a/gcc/gcc.c
>>  -+++ b/gcc/gcc.c
>>  -@@ -9281,8 +9281,10 @@ getenv_spec_function (int argc, const ch
>>  -     value = varname;
>>  -
>>  -   if (!value)
>>  --    fatal_error (input_location,
>>  --               "environment variable %qs not defined", varname);
>>  -+    {
>>  -+      warning (input_location, "environment variable %qs not 
>> defined", varname);
>>  -+      value = "";
>>  -+    }
>>  -
>>  -   /* We have to escape every character of the environment 
>> variable so
>>  -      they are not interpreted as active spec characters.  A
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/930-fix-mips-noexecstack.patch 
>> b/toolchain/gcc/patches/7.5.0/930-fix-mips-noexecstack.patch
>>  deleted file mode 100644
>>  index 5affd6f92d..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/930-fix-mips-noexecstack.patch
>>  +++ /dev/null
>>  @@ -1,111 +0,0 @@
>>  -From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 
>> 2001
>>  -From: Andrew McDonnell <bugs at andrewmcdonnell.net>
>>  -Date: Fri, 3 Oct 2014 19:09:00 +0930
>>  -Subject: Add .note.GNU-stack section
>>  -
>>  -See 
>> http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
>>  -Below copied from 
>> https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
>>  -
>>  -Re: [Patch, MIPS] Add .note.GNU-stack section
>>  -
>>  -    From: Steve Ellcey <sellcey at mips dot com>
>>  -
>>  -On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
>>  ->
>>  ->
>>  -> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia at gmail.com> wrote:
>>  -
>>  ->         This works except you did not update the assembly files 
>> in
>>  ->         libgcc or glibc. We (Cavium) have the same patch in our 
>> tree
>>  ->         for a few released versions.
>>  -
>>  -> Mind just checking yours in then Andrew?
>>  -
>>  -> Thanks!
>>  -> -eric
>>  -
>>  -I talked to Andrew about what files he changed in GCC and created 
>> and
>>  -tested this new patch.  Andrew also mentioned changing some 
>> assembly
>>  -files in glibc but I don't see any use of '.section 
>> .note.GNU-stack' in
>>  -any assembly files in glibc (for any platform) so I wasn't 
>> planning on
>>  -creating a glibc to add them to mips glibc assembly language files.
>>  -
>>  -OK to check in this patch?
>>  -
>>  -Steve Ellcey
>>  -sellcey at mips.com
>>  -
>>  -
>>  -
>>  -2014-09-26  Steve Ellcey  <sellcey at mips.com>
>>  ----
>>  - gcc/config/mips/mips.c          | 3 +++
>>  - libgcc/config/mips/crti.S       | 4 ++++
>>  - libgcc/config/mips/crtn.S       | 3 +++
>>  - libgcc/config/mips/mips16.S     | 4 ++++
>>  - libgcc/config/mips/vr4120-div.S | 4 ++++
>>  - 5 files changed, 18 insertions(+)
>>  -
>>  ---- a/gcc/config/mips/mips.c
>>  -+++ b/gcc/config/mips/mips.c
>>  -@@ -22567,6 +22567,9 @@ mips_promote_function_mode (const_tree t
>>  - #undef TARGET_CUSTOM_FUNCTION_DESCRIPTORS
>>  - #define TARGET_CUSTOM_FUNCTION_DESCRIPTORS 2
>>  -
>>  -+#undef TARGET_ASM_FILE_END
>>  -+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
>>  -+
>>  - struct gcc_target targetm = TARGET_INITIALIZER;
>>  -
>>  - #include "gt-mips.h"
>>  ---- a/libgcc/config/mips/crti.S
>>  -+++ b/libgcc/config/mips/crti.S
>>  -@@ -21,6 +21,10 @@ a copy of the GCC Runtime Library Except
>>  - see the files COPYING3 and COPYING.RUNTIME respectively.  If not, 
>> see
>>  - <http://www.gnu.org/licenses/>.  */
>>  -
>>  -+
>>  -+/* An executable stack is *not* required for these functions.  */
>>  -+      .section .note.GNU-stack,"",%progbits
>>  -+
>>  - /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
>>  -    Return spill offset of 40 and 20.  Aligned to 16 bytes for 
>> n32.  */
>>  -
>>  ---- a/libgcc/config/mips/crtn.S
>>  -+++ b/libgcc/config/mips/crtn.S
>>  -@@ -21,6 +21,9 @@ a copy of the GCC Runtime Library Except
>>  - see the files COPYING3 and COPYING.RUNTIME respectively.  If not, 
>> see
>>  - <http://www.gnu.org/licenses/>.  */
>>  -
>>  -+/* An executable stack is *not* required for these functions.  */
>>  -+      .section .note.GNU-stack,"",%progbits
>>  -+
>>  - /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
>>  -    Return spill offset of 40 and 20.  Aligned to 16 bytes for 
>> n32.  */
>>  -
>>  ---- a/libgcc/config/mips/mips16.S
>>  -+++ b/libgcc/config/mips/mips16.S
>>  -@@ -48,6 +48,10 @@ see the files COPYING3 and COPYING.RUNTI
>>  -    values using the soft-float calling convention, but do the 
>> actual
>>  -    operation using the hard floating point instructions.  */
>>  -
>>  -+/* An executable stack is *not* required for these functions.  */
>>  -+      .section .note.GNU-stack,"",%progbits
>>  -+      .previous
>>  -+
>>  - #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == 
>> _ABIO64)
>>  -
>>  - /* This file contains 32-bit assembly code.  */
>>  ---- a/libgcc/config/mips/vr4120-div.S
>>  -+++ b/libgcc/config/mips/vr4120-div.S
>>  -@@ -26,6 +26,10 @@ see the files COPYING3 and COPYING.RUNTI
>>  -    -mfix-vr4120.  div and ddiv do not give the correct result 
>> when one
>>  -    of the operands is negative.  */
>>  -
>>  -+/* An executable stack is *not* required for these functions.  */
>>  -+      .section .note.GNU-stack,"",%progbits
>>  -+      .previous
>>  -+
>>  -       .set    nomips16
>>  -
>>  - #define DIV                                                       
>>     \
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/931-libffi-fix-MIPS-softfloat-build-issue.patch 
>> b/toolchain/gcc/patches/7.5.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
>>  deleted file mode 100644
>>  index 9d436efc18..0000000000
>>  --- 
>> a/toolchain/gcc/patches/7.5.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
>>  +++ /dev/null
>>  @@ -1,175 +0,0 @@
>>  -From c0c62fa4256f805389f16ebfc4a60cf789129b50 Mon Sep 17 00:00:00 
>> 2001
>>  -From: BangLang Huang <banglang.huang at foxmail.com>
>>  -Date: Wed, 9 Nov 2016 10:36:49 +0800
>>  -Subject: [PATCH] libffi: fix MIPS softfloat build issue
>>  -
>>  -Backported from github.com/libffi/libffi#272
>>  -
>>  -Signed-off-by: BangLang Huang <banglang.huang at foxmail.com>
>>  -Signed-off-by: Yousong Zhou <yszhou4tech at gmail.com>
>>  ----
>>  - libffi/src/mips/n32.S | 17 +++++++++++++++++
>>  - libffi/src/mips/o32.S | 17 +++++++++++++++++
>>  - 2 files changed, 34 insertions(+)
>>  -
>>  -diff --git a/libffi/src/mips/n32.S b/libffi/src/mips/n32.S
>>  -index c6985d30a6f..8f25994773c 100644
>>  ---- a/libffi/src/mips/n32.S
>>  -+++ b/libffi/src/mips/n32.S
>>  -@@ -107,6 +107,16 @@ loadregs:
>>  -
>>  -       REG_L   t6, 3*FFI_SIZEOF_ARG($fp)  # load the flags word 
>> into t6.
>>  -
>>  -+#ifdef __mips_soft_float
>>  -+      REG_L   a0, 0*FFI_SIZEOF_ARG(t9)
>>  -+      REG_L   a1, 1*FFI_SIZEOF_ARG(t9)
>>  -+      REG_L   a2, 2*FFI_SIZEOF_ARG(t9)
>>  -+      REG_L   a3, 3*FFI_SIZEOF_ARG(t9)
>>  -+      REG_L   a4, 4*FFI_SIZEOF_ARG(t9)
>>  -+      REG_L   a5, 5*FFI_SIZEOF_ARG(t9)
>>  -+      REG_L   a6, 6*FFI_SIZEOF_ARG(t9)
>>  -+      REG_L   a7, 7*FFI_SIZEOF_ARG(t9)
>>  -+#else
>>  -       and     t4, t6, ((1<<FFI_FLAG_BITS)-1)
>>  -       REG_L   a0, 0*FFI_SIZEOF_ARG(t9)
>>  -       beqz    t4, arg1_next
>>  -@@ -193,6 +203,7 @@ arg7_next:
>>  - arg8_doublep:
>>  -       l.d     $f19, 7*FFI_SIZEOF_ARG(t9)
>>  - arg8_next:
>>  -+#endif
>>  -
>>  - callit:
>>  -       # Load the function pointer
>>  -@@ -214,6 +225,7 @@ retint:
>>  -       b       epilogue
>>  -
>>  - retfloat:
>>  -+#ifndef __mips_soft_float
>>  -       bne     t6, FFI_TYPE_FLOAT, retdouble
>>  -       jal     t9
>>  -       REG_L   t4, 4*FFI_SIZEOF_ARG($fp)
>>  -@@ -272,6 +284,7 @@ retstruct_f_d:
>>  -       s.s     $f0, 0(t4)
>>  -       s.d     $f2, 8(t4)
>>  -       b       epilogue
>>  -+#endif
>>  -
>>  - retstruct_d_soft:
>>  -       bne     t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
>>  -@@ -429,6 +442,7 @@ ffi_closure_N32:
>>  -       REG_S   a6, A6_OFF2($sp)
>>  -       REG_S   a7, A7_OFF2($sp)
>>  -
>>  -+#ifndef __mips_soft_float
>>  -       # Store all possible float/double registers.
>>  -       s.d     $f12, F12_OFF2($sp)
>>  -       s.d     $f13, F13_OFF2($sp)
>>  -@@ -438,6 +452,7 @@ ffi_closure_N32:
>>  -       s.d     $f17, F17_OFF2($sp)
>>  -       s.d     $f18, F18_OFF2($sp)
>>  -       s.d     $f19, F19_OFF2($sp)
>>  -+#endif
>>  -
>>  -       # Call ffi_closure_mips_inner_N32 to do the real work.
>>  -       LA      t9, ffi_closure_mips_inner_N32
>>  -@@ -458,6 +473,7 @@ cls_retint:
>>  -       b       cls_epilogue
>>  -
>>  - cls_retfloat:
>>  -+#ifndef __mips_soft_float
>>  -       bne     v0, FFI_TYPE_FLOAT, cls_retdouble
>>  -       l.s     $f0, V0_OFF2($sp)
>>  -       b       cls_epilogue
>>  -@@ -500,6 +516,7 @@ cls_retstruct_f_d:
>>  -       l.s     $f0, V0_OFF2($sp)
>>  -       l.d     $f2, V1_OFF2($sp)
>>  -       b       cls_epilogue
>>  -+#endif
>>  -
>>  - cls_retstruct_small2:
>>  -       REG_L   v0, V0_OFF2($sp)
>>  -diff --git a/libffi/src/mips/o32.S b/libffi/src/mips/o32.S
>>  -index eb279813a76..1aff4b14814 100644
>>  ---- a/libffi/src/mips/o32.S
>>  -+++ b/libffi/src/mips/o32.S
>>  -@@ -82,13 +82,16 @@ sixteen:
>>  -
>>  -       ADDU    $sp, 4 * FFI_SIZEOF_ARG         # adjust $sp to new 
>> args
>>  -
>>  -+#ifndef __mips_soft_float
>>  -       bnez    t0, pass_d                      # make it quick for 
>> int
>>  -+#endif
>>  -       REG_L   a0, 0*FFI_SIZEOF_ARG($sp)       # just go ahead and 
>> load the
>>  -       REG_L   a1, 1*FFI_SIZEOF_ARG($sp)       # four regs.
>>  -       REG_L   a2, 2*FFI_SIZEOF_ARG($sp)
>>  -       REG_L   a3, 3*FFI_SIZEOF_ARG($sp)
>>  -       b       call_it
>>  -
>>  -+#ifndef __mips_soft_float
>>  - pass_d:
>>  -       bne     t0, FFI_ARGS_D, pass_f
>>  -       l.d     $f12, 0*FFI_SIZEOF_ARG($sp)     # load $fp regs 
>> from args
>>  -@@ -130,6 +133,7 @@ pass_f_d:
>>  -  #    bne     t0, FFI_ARGS_F_D, call_it
>>  -       l.s     $f12, 0*FFI_SIZEOF_ARG($sp)     # load $fp regs 
>> from args
>>  -       l.d     $f14, 2*FFI_SIZEOF_ARG($sp)     # passing double 
>> and float
>>  -+#endif
>>  -
>>  - call_it:
>>  -       # Load the function pointer
>>  -@@ -158,14 +162,23 @@ retfloat:
>>  -       bne     t2, FFI_TYPE_FLOAT, retdouble
>>  -       jalr    t9
>>  -       REG_L   t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
>>  -+#ifndef __mips_soft_float
>>  -       s.s     $f0, 0(t0)
>>  -+#else
>>  -+      REG_S v0, 0(t0)
>>  -+#endif
>>  -       b       epilogue
>>  -
>>  - retdouble:
>>  -       bne     t2, FFI_TYPE_DOUBLE, noretval
>>  -       jalr    t9
>>  -       REG_L   t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
>>  -+#ifndef __mips_soft_float
>>  -       s.d     $f0, 0(t0)
>>  -+#else
>>  -+      REG_S v1, 4(t0)
>>  -+      REG_S v0, 0(t0)
>>  -+#endif
>>  -       b       epilogue
>>  -
>>  - noretval:
>>  -@@ -261,9 +274,11 @@ $LCFI7:
>>  -       li      $13, 1          # FFI_O32
>>  -       bne     $16, $13, 1f    # Skip fp save if FFI_O32_SOFT_FLOAT
>>  -
>>  -+#ifndef __mips_soft_float
>>  -       # Store all possible float/double registers.
>>  -       s.d     $f12, FA_0_0_OFF2($fp)
>>  -       s.d     $f14, FA_1_0_OFF2($fp)
>>  -+#endif
>>  - 1:
>>  -       # Call ffi_closure_mips_inner_O32 to do the work.
>>  -       la      t9, ffi_closure_mips_inner_O32
>>  -@@ -281,6 +296,7 @@ $LCFI7:
>>  -       li      $13, 1          # FFI_O32
>>  -       bne     $16, $13, 1f    # Skip fp restore if 
>> FFI_O32_SOFT_FLOAT
>>  -
>>  -+#ifndef __mips_soft_float
>>  -       li      $9, FFI_TYPE_FLOAT
>>  -       l.s     $f0, V0_OFF2($fp)
>>  -       beq     $8, $9, closure_done
>>  -@@ -288,6 +304,7 @@ $LCFI7:
>>  -       li      $9, FFI_TYPE_DOUBLE
>>  -       l.d     $f0, V0_OFF2($fp)
>>  -       beq     $8, $9, closure_done
>>  -+#endif
>>  - 1:
>>  -       REG_L   $3, V1_OFF2($fp)
>>  -       REG_L   $2, V0_OFF2($fp)
>>  ---
>>  -2.16.3
>>  -
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/940-no-clobber-stamp-bits.patch 
>> b/toolchain/gcc/patches/7.5.0/940-no-clobber-stamp-bits.patch
>>  deleted file mode 100644
>>  index 6a4d54aaa2..0000000000
>>  --- a/toolchain/gcc/patches/7.5.0/940-no-clobber-stamp-bits.patch
>>  +++ /dev/null
>>  @@ -1,33 +0,0 @@
>>  -commit 548d9a008ff265e9eaa3c7e0e6e301c6bd5645e6
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Fri Dec 12 17:01:57 2014 +0000
>>  -
>>  -    gcc: don't clobber stamp-bits with a symlink to itself
>>  -
>>  -    Several versions of gcc have an issue in libstdc++v3 where the 
>> build may
>>  -    clobber stamp-bits with a link to itself.  This doesn't 
>> manifest itself
>>  -    on all systems.  On several Ubuntu systems, this doesn't 
>> appear to be a
>>  -    problem, but it is an issue on Fedora 16 systems.
>>  -
>>  -    To fix the issue, we'll simply filter out stamp-bits from the 
>> symlinks
>>  -    to be generated.
>>  -
>>  -    Note: gcc 4.4.7 is unaffected by this issue, so no fix is 
>> necessary
>>  -    there.
>>  -
>>  -    Signed-off-by: John Szakmeister <john at szakmeister.net>
>>  -
>>  -    SVN-Revision: 43669
>>  -
>>  -
>>  ---- a/libstdc++-v3/include/Makefile.in
>>  -+++ b/libstdc++-v3/include/Makefile.in
>>  -@@ -1474,7 +1474,7 @@ stamp-bits: ${bits_headers}
>>  -       @$(STAMP) stamp-bits
>>  -
>>  - stamp-bits-sup: stamp-bits ${bits_sup_headers}
>>  --      @-cd ${bits_builddir} && $(LN_S) $? . 2>/dev/null
>>  -+      @-cd ${bits_builddir} && $(LN_S) $(filter-out 
>> stamp-bits,$?) . 2>/dev/null
>>  -       @$(STAMP) stamp-bits-sup
>>  -
>>  - stamp-c_base: ${c_base_headers}
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/950-cpp_file_path_translation.patch 
>> b/toolchain/gcc/patches/7.5.0/950-cpp_file_path_translation.patch
>>  deleted file mode 100644
>>  index cd30cb2014..0000000000
>>  --- 
>> a/toolchain/gcc/patches/7.5.0/950-cpp_file_path_translation.patch
>>  +++ /dev/null
>>  @@ -1,181 +0,0 @@
>>  -commit 331735a357a73c7b8adc205241ac3cc6543d985e
>>  -Author: Felix Fietkau <nbd at openwrt.org>
>>  -Date:   Tue Nov 17 12:38:22 2015 +0000
>>  -
>>  -    gcc: add a patch to 5.x that supports translation of __FILE__ 
>> paths
>>  -
>>  -    Signed-off-by: Felix Fietkau <nbd at openwrt.org>
>>  -
>>  -    SVN-Revision: 47490
>>  -
>>  -Forward ported from attachment to 
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
>>  -
>>  ---- a/gcc/c-family/c-opts.c
>>  -+++ b/gcc/c-family/c-opts.c
>>  -@@ -588,6 +588,10 @@ c_common_handle_option (size_t scode, co
>>  -       add_path (xstrdup (arg), SYSTEM, 0, true);
>>  -       break;
>>  -
>>  -+    case OPT_iremap:
>>  -+      add_cpp_remap_path (arg);
>>  -+      break;
>>  -+
>>  -     case OPT_iwithprefix:
>>  -       add_prefixed_path (arg, SYSTEM);
>>  -       break;
>>  ---- a/gcc/c-family/c.opt
>>  -+++ b/gcc/c-family/c.opt
>>  -@@ -1825,6 +1825,10 @@ iquote
>>  - C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path 
>> after %qs)
>>  - -iquote <dir> Add <dir> to the end of the quote include path.
>>  -
>>  -+iremap
>>  -+C ObjC C++ ObjC++ Joined Separate
>>  -+-iremap <src:dst>  Convert <src> to <dst> if it occurs as prefix 
>> in __FILE__.
>>  -+
>>  - iwithprefix
>>  - C ObjC C++ ObjC++ Joined Separate
>>  - -iwithprefix <dir>    Add <dir> to the end of the system include 
>> path.
>>  ---- a/gcc/doc/cpp.texi
>>  -+++ b/gcc/doc/cpp.texi
>>  -@@ -4272,6 +4272,7 @@ Refer to the GCC manual for full documen
>>  - @c man begin SYNOPSIS
>>  - cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] 
>> [@option{-U}@var{macro}]
>>  -     [@option{-I}@var{dir}@dots{}] 
>> [@option{-iquote}@var{dir}@dots{}]
>>  -+    [@option{-iremap}@var{src}:@var{dst}]
>>  -     [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} 
>> @var{filename}]
>>  -     [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
>>  -     [@option{-MT} @var{target}@dots{}]
>>  ---- a/gcc/doc/cppopts.texi
>>  -+++ b/gcc/doc/cppopts.texi
>>  -@@ -220,6 +220,12 @@ extensions @samp{.i}, @samp{.ii} or @sam
>>  - extensions that GCC uses for preprocessed files created by
>>  - @option{-save-temps}.
>>  -
>>  -+ at item -iremap @var{src}:@var{dst}
>>  -+ at opindex iremap
>>  -+Replace the prefix @var{src} in __FILE__ with @var{dst} at 
>> expansion time.
>>  -+This option can be specified more than once.  Processing stops at 
>> the first
>>  -+match.
>>  -+
>>  - @item -fdirectives-only
>>  - @opindex fdirectives-only
>>  - When preprocessing, handle directives, but do not expand macros.
>>  ---- a/gcc/doc/invoke.texi
>>  -+++ b/gcc/doc/invoke.texi
>>  -@@ -11871,6 +11871,12 @@ by @option{-fplugin=@var{name}} instead
>>  - @option{-fplugin=@var{path}/@var{name}.so}.  This option is not 
>> meant
>>  - to be used by the user, but only passed by the driver.
>>  -
>>  -+ at item -iremap @var{src}:@var{dst}
>>  -+ at opindex iremap
>>  -+Replace the prefix @var{src} in __FILE__ with @var{dst} at 
>> expansion time.
>>  -+This option can be specified more than once.  Processing stops at 
>> the first
>>  -+match.
>>  -+
>>  - @item -L at var{dir}
>>  - @opindex L
>>  - Add directory @var{dir} to the list of directories to be searched
>>  ---- a/libcpp/include/cpplib.h
>>  -+++ b/libcpp/include/cpplib.h
>>  -@@ -820,6 +820,9 @@ extern void cpp_set_lang (cpp_reader *,
>>  - /* Set the include paths.  */
>>  - extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, 
>> cpp_dir *, int);
>>  -
>>  -+/* Provide src:dst pair for __FILE__ remapping.  */
>>  -+extern void add_cpp_remap_path (const char *);
>>  -+
>>  - /* Call these to get pointers to the options, callback, and deps
>>  -    structures for a given reader.  These pointers are good until 
>> you
>>  -    call cpp_finish on that reader.  You can either edit the 
>> callbacks
>>  ---- a/libcpp/macro.c
>>  -+++ b/libcpp/macro.c
>>  -@@ -227,6 +227,64 @@ static const char * const monthnames[] =
>>  -   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
>>  - };
>>  -
>>  -+static size_t remap_pairs;
>>  -+static char **remap_src;
>>  -+static char **remap_dst;
>>  -+
>>  -+void
>>  -+add_cpp_remap_path (const char *arg)
>>  -+{
>>  -+  const char *arg_dst;
>>  -+  size_t len;
>>  -+
>>  -+  arg_dst = strchr(arg, ':');
>>  -+  if (arg_dst == NULL)
>>  -+    {
>>  -+      fprintf(stderr, "Invalid argument for -iremap\n");
>>  -+      exit(1);
>>  -+    }
>>  -+
>>  -+  len = arg_dst - arg;
>>  -+  ++arg_dst;
>>  -+
>>  -+  remap_src = (char **) xrealloc(remap_src, sizeof(char *) * 
>> (remap_pairs + 1));
>>  -+  remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * 
>> (remap_pairs + 1));
>>  -+
>>  -+  remap_src[remap_pairs] = (char *) xmalloc(len + 1);
>>  -+  memcpy(remap_src[remap_pairs], arg, len);
>>  -+  remap_src[remap_pairs][len] = '\0';
>>  -+  remap_dst[remap_pairs] = xstrdup(arg_dst);
>>  -+  ++remap_pairs;
>>  -+}
>>  -+
>>  -+static const char *
>>  -+cpp_remap_file (const char *arg, char **tmp_name)
>>  -+{
>>  -+  char *result;
>>  -+  size_t i, len;
>>  -+
>>  -+  for (i = 0; i < remap_pairs; ++i)
>>  -+    {
>>  -+      len = strlen (remap_src[i]);
>>  -+      if (strncmp (remap_src[i], arg, len))
>>  -+      continue;
>>  -+      if (arg[len] == '\0')
>>  -+      return xstrdup (remap_dst[i]);
>>  -+      if (arg[len] != '/')
>>  -+      continue;
>>  -+      arg += len;
>>  -+      len = strlen (remap_dst[i]);
>>  -+      result = (char *) xmalloc (len + strlen (arg) + 1);
>>  -+      memcpy(result, remap_dst[i], len);
>>  -+      strcpy(result + len, arg);
>>  -+      *tmp_name = result;
>>  -+
>>  -+      return result;
>>  -+    }
>>  -+
>>  -+   return arg;
>>  -+}
>>  -+
>>  - /* Helper function for builtin_macro.  Returns the text generated 
>> by
>>  -    a builtin macro. */
>>  - const uchar *
>>  -@@ -290,6 +348,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
>>  -       {
>>  -       unsigned int len;
>>  -       const char *name;
>>  -+      char *tmp_name = NULL;
>>  -       uchar *buf;
>>  -
>>  -       if (node->value.builtin == BT_FILE)
>>  -@@ -301,6 +360,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
>>  -           if (!name)
>>  -             abort ();
>>  -         }
>>  -+      name = cpp_remap_file (name, &tmp_name);
>>  -       len = strlen (name);
>>  -       buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
>>  -       result = buf;
>>  -@@ -308,6 +368,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
>>  -       buf = cpp_quote_string (buf + 1, (const unsigned char *) 
>> name, len);
>>  -       *buf++ = '"';
>>  -       *buf = '\0';
>>  -+      free (tmp_name);
>>  -       }
>>  -       break;
>>  -
>>  diff --git 
>> a/toolchain/gcc/patches/7.5.0/960-gotools-fix-compilation-when-making-cross-compiler.patch 
>> b/toolchain/gcc/patches/7.5.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
>>  deleted file mode 100644
>>  index 556fa16473..0000000000
>>  --- 
>> a/toolchain/gcc/patches/7.5.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
>>  +++ /dev/null
>>  @@ -1,73 +0,0 @@
>>  -From dda6b050cd74a352670787a294596a9c56c21327 Mon Sep 17 00:00:00 
>> 2001
>>  -From: Yousong Zhou <yszhou4tech at gmail.com>
>>  -Date: Fri, 4 May 2018 18:20:53 +0800
>>  -Subject: [PATCH] gotools: fix compilation when making cross 
>> compiler
>>  -
>>  -libgo is "the runtime support library for the Go programming 
>> language.
>>  -This library is intended for use with the Go frontend."
>>  -
>>  -gccgo will link target files with libgo.so which depends on 
>> libgcc_s.so.1, but
>>  -the linker will complain that it cannot find it.  That's because 
>> shared libgcc
>>  -is not present in the install directory yet.  libgo.so was made 
>> without problem
>>  -because gcc will emit -lgcc_s when compiled with -shared option.  
>> When gotools
>>  -were being made, it was supplied with -static-libgcc thus no link 
>> option was
>>  -provided.  Check LIBGO in gcc/go/gcc-spec.c for how gccgo make a 
>> builtin spec
>>  -for linking with libgo.so
>>  -
>>  -- GccgoCrossCompilation, 
>> https://github.com/golang/go/wiki/GccgoCrossCompilation
>>  -- Cross-building instructions, 
>> http://www.eglibc.org/archives/patches/msg00078.html
>>  -
>>  -When 3-pass GCC compilation is used, shared libgcc runtime 
>> libraries will be
>>  -available after gcc pass2 completed and will meet the gotools link 
>> requirement
>>  -at gcc pass3
>>  ----
>>  - gotools/Makefile.am | 4 +++-
>>  - gotools/Makefile.in | 4 +++-
>>  - 2 files changed, 6 insertions(+), 2 deletions(-)
>>  -
>>  -diff --git a/gotools/Makefile.am b/gotools/Makefile.am
>>  -index 5f3940a278b..9c22f5df103 100644
>>  ---- a/gotools/Makefile.am
>>  -+++ b/gotools/Makefile.am
>>  -@@ -26,6 +26,7 @@ PWD_COMMAND = $${PWDCMD-pwd}
>>  - STAMP = echo timestamp >
>>  -
>>  - libgodir = ../$(target_noncanonical)/libgo
>>  -+libgccdir = ../$(target_noncanonical)/libgcc
>>  - LIBGODEP = $(libgodir)/libgo.la
>>  -
>>  - if NATIVE
>>  -@@ -38,7 +39,8 @@ endif
>>  - GOCFLAGS = $(CFLAGS_FOR_TARGET)
>>  - GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
>>  -
>>  --AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
>>  -+AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
>>  -+      -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
>>  - GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) 
>> $(AM_LDFLAGS) -o $@
>>  -
>>  - cmdsrcdir = $(srcdir)/../libgo/go/cmd
>>  -diff --git a/gotools/Makefile.in b/gotools/Makefile.in
>>  -index 4386576b011..0bdd9290e01 100644
>>  ---- a/gotools/Makefile.in
>>  -+++ b/gotools/Makefile.in
>>  -@@ -252,13 +252,15 @@ mkinstalldirs = $(SHELL) 
>> $(toplevel_srcdir)/mkinstalldirs
>>  - PWD_COMMAND = $${PWDCMD-pwd}
>>  - STAMP = echo timestamp >
>>  - libgodir = ../$(target_noncanonical)/libgo
>>  -+libgccdir = ../$(target_noncanonical)/libgcc
>>  - LIBGODEP = $(libgodir)/libgo.la
>>  - @NATIVE_FALSE at GOCOMPILER = $(GOC)
>>  -
>>  - # Use the compiler we just built.
>>  - @NATIVE_TRUE at GOCOMPILER = $(GOC_FOR_TARGET) 
>> $(XGCC_FLAGS_FOR_TARGET)
>>  - GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
>>  --AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
>>  -+AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
>>  -+      -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
>>  - GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) 
>> $(AM_LDFLAGS) -o $@
>>  - cmdsrcdir = $(srcdir)/../libgo/go/cmd
>>  - go_cmd_go_files = \
>>  ---
>>  -2.16.3
>>  -
>>  --
>>  2.30.2
>> 
>> 
>>  _______________________________________________
>>  openwrt-devel mailing list
>>  openwrt-devel at lists.openwrt.org
>>  https://lists.openwrt.org/mailman/listinfo/openwrt-devel





More information about the openwrt-devel mailing list