[OpenWrt-Devel] [PATCH 1/3] toolchain/gcc: add GCC 8.1.0

Rosen Penev rosenp at gmail.com
Thu Jun 21 20:14:38 EDT 2018


On Thu, Jun 21, 2018 at 5:09 PM Syrone Wong <wong.syrone at gmail.com> wrote:
>
> HI,
>
> We are using FFmpeg 3.2.10, it was cut from master on 2016-10-26,
> definitely has no fixes to GCC 8, you may want to check the latest
> 4.0.1. 4.0.1 was released on 2018-06-16. It is the latest stable
> FFmpeg release from the 4.0 release branch, which was cut from master
> on 2018-04-16.
>
> You can disable FFmpeg temporarily and make sure other important
> components are working as expected, e.g. kernel, busybox, procd,
> firewall3, etc.
Added FFmpeg maintainer to CC.
>
>
> Best Regards,
> Syrone Wong
>
>
> On Fri, Jun 22, 2018 at 2:07 AM, Rosen Penev <rosenp at gmail.com> wrote:
> > Error while compiling ffmpeg:
> >
> > GNU assembler not found, install/update gas-preprocessor
> >
> >
> > On Thu, Jun 21, 2018 at 8:09 AM <wong.syrone at gmail.com> wrote:
> >>
> >> From: Syrone Wong <wong.syrone at gmail.com>
> >>
> >> Changes compared to GCC 7.x
> >>
> >> 001-revert_register_mode_search.patch dropped
> >>
> >> The commit guards comparison via maybe_gt(), while 001-revert_register_mode_search.patch simply ignore
> >> "GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode)", the powerpc issue might be fixed, I'm not pretty sure.
> >>
> >> upstream commit: https://github.com/gcc-mirror/gcc/commit/52acb7aee19f4bb33e76819907eff343bf4f42e8
> >>
> >> 020-PR-libstdc-81797-Add-.NOTPARALLEL-to-include-Makefil.patch dropped due to already upstream
> >>
> >> 100-PR-rtl-optimization-83496.patch dropped due to already upstream
> >>
> >> 910-mbsd_multi.patch
> >> modified to fix ambiguous overloaded inform() call error
> >>
> >> gcc/input.h
> >> header: define UNKNOWN_LOCATION ((source_location) 0)
> >>
> >> -        inform (0, "someone does not honour COPTS correctly, passed %d times",
> >> -         honour_copts);
> >> +        inform (UNKNOWN_LOCATION, "someone does not honour COPTS correctly, passed %d times",
> >> +         honour_copts);
> >>
> >> 940-no-clobber-stamp-bits.patch dropped due to fixed upstream by another way
> >> upstream commit: https://github.com/gcc-mirror/gcc/commit/87b2d547f8ac9778d66909b8726fe967d1efbc74
> >>
> >> 950-cpp_file_path_translation.patch dropped, Both -fmacro-prefix-map and -ffile-prefix-map are added
> >> to gcc 8.1.0, if I understand it correctly, we should use -fmacro-prefix-map
> >> usage: -fmacro-prefix-map=@var{old}=@var{new}
> >> upstream commit: https://github.com/gcc-mirror/gcc/commit/859b51f83662d01e4f158ea9327db9ca37fe70b3
> >>
> >> -iremap exists as a flag for a long time, for backward compatibility, I think we should keep the
> >> variable name unchanged but change its value in rules.mk for gcc 8.x and higher.
> >>
> >> Compile and run tested on x86_64
> >>
> >> Signed-off-by: Syrone Wong <wong.syrone at gmail.com>
> >> ---
> >>  toolchain/gcc/Config.in                       |   3 +
> >>  toolchain/gcc/Config.version                  |   5 +
> >>  toolchain/gcc/common.mk                       |   4 +
> >>  .../patches/8.1.0/002-case_insensitive.patch  |  24 +++
> >>  .../gcc/patches/8.1.0/010-documentation.patch |  35 ++++
> >>  .../patches/8.1.0/110-Fix-MIPS-PR-84790.patch |  20 +++
> >>  .../gcc/patches/8.1.0/230-musl_libssp.patch   |  13 ++
> >>  .../300-mips_Os_cpu_rtx_cost_model.patch      |  21 +++
> >>  .../8.1.0/800-arm_v5te_no_ldrd_strd.patch     |  11 ++
> >>  .../8.1.0/810-arm-softfloat-libgcc.patch      |  33 ++++
> >>  .../gcc/patches/8.1.0/820-libgcc_pic.patch    |  44 +++++
> >>  .../8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch |  28 +++
> >>  .../patches/8.1.0/850-use_shared_libgcc.patch |  54 ++++++
> >>  .../patches/8.1.0/851-libgcc_no_compat.patch  |  22 +++
> >>  .../patches/8.1.0/870-ppc_no_crtsavres.patch  |  11 ++
> >>  .../gcc/patches/8.1.0/881-no_tm_section.patch |  11 ++
> >>  .../patches/8.1.0/900-bad-mips16-crt.patch    |   9 +
> >>  .../gcc/patches/8.1.0/910-mbsd_multi.patch    | 146 +++++++++++++++
> >>  .../8.1.0/920-specs_nonfatal_getenv.patch     |  22 +++
> >>  .../8.1.0/930-fix-mips-noexecstack.patch      | 111 ++++++++++++
> >>  ...ibffi-fix-MIPS-softfloat-build-issue.patch | 168 ++++++++++++++++++
> >>  ...mpilation-when-making-cross-compiler.patch |  67 +++++++
> >>  22 files changed, 862 insertions(+)
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/002-case_insensitive.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/010-documentation.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/110-Fix-MIPS-PR-84790.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/230-musl_libssp.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/800-arm_v5te_no_ldrd_strd.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/810-arm-softfloat-libgcc.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/820-libgcc_pic.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/850-use_shared_libgcc.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/870-ppc_no_crtsavres.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/881-no_tm_section.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/900-bad-mips16-crt.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/910-mbsd_multi.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/920-specs_nonfatal_getenv.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/930-fix-mips-noexecstack.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
> >>  create mode 100644 toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
> >>
> >> diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
> >> index 37437900b1..c3208d372c 100644
> >> --- a/toolchain/gcc/Config.in
> >> +++ b/toolchain/gcc/Config.in
> >> @@ -20,6 +20,9 @@ choice
> >>                 bool "gcc 7.x"
> >>                 depends on !arc
> >>
> >> +       config GCC_USE_VERSION_8
> >> +               bool "gcc 8.x"
> >> +               depends on !arc
> >>  endchoice
> >>
> >>  config GCC_USE_GRAPHITE
> >> diff --git a/toolchain/gcc/Config.version b/toolchain/gcc/Config.version
> >> index 616b6bbe35..97c5e50dad 100644
> >> --- a/toolchain/gcc/Config.version
> >> +++ b/toolchain/gcc/Config.version
> >> @@ -6,8 +6,13 @@ config GCC_VERSION_5
> >>         default y if GCC_USE_VERSION_5
> >>         bool
> >>
> >> +config GCC_VERSION_8
> >> +       default y if GCC_USE_VERSION_8
> >> +       bool
> >> +
> >>  config GCC_VERSION
> >>         string
> >>         default "5.5.0"         if GCC_VERSION_5
> >>         default "arc-2017.09-release"   if GCC_VERSION_7_1_ARC
> >> +       default "8.1.0"         if GCC_VERSION_8
> >>         default "7.3.0"
> >> diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
> >> index 1f9abb3f3e..1e17620156 100644
> >> --- a/toolchain/gcc/common.mk
> >> +++ b/toolchain/gcc/common.mk
> >> @@ -36,6 +36,10 @@ ifeq ($(PKG_VERSION),7.3.0)
> >>    PKG_HASH:=832ca6ae04636adbb430e865a1451adf6979ab44ca1c8374f61fba65645ce15c
> >>  endif
> >>
> >> +ifeq ($(PKG_VERSION),8.1.0)
> >> +  PKG_HASH:=1d1866f992626e61349a1ccd0b8d5253816222cdc13390dcfaa74b093aa2b153
> >> +endif
> >> +
> >>  ifneq ($(CONFIG_GCC_VERSION_7_1_ARC),)
> >>      PKG_VERSION:=7.1.1
> >>      PKG_SOURCE_URL:=https://github.com/foss-for-synopsys-dwc-arc-processors/gcc/archive/$(GCC_VERSION)
> >> diff --git a/toolchain/gcc/patches/8.1.0/002-case_insensitive.patch b/toolchain/gcc/patches/8.1.0/002-case_insensitive.patch
> >> new file mode 100644
> >> index 0000000000..3442076d7d
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/002-case_insensitive.patch
> >> @@ -0,0 +1,24 @@
> >> +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/8.1.0/010-documentation.patch b/toolchain/gcc/patches/8.1.0/010-documentation.patch
> >> new file mode 100644
> >> index 0000000000..c3a6a15901
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/010-documentation.patch
> >> @@ -0,0 +1,35 @@
> >> +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
> >> +@@ -3203,18 +3203,10 @@ 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/8.1.0/110-Fix-MIPS-PR-84790.patch b/toolchain/gcc/patches/8.1.0/110-Fix-MIPS-PR-84790.patch
> >> new file mode 100644
> >> index 0000000000..b89eca2faf
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/110-Fix-MIPS-PR-84790.patch
> >> @@ -0,0 +1,20 @@
> >> +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
> >> +@@ -3102,6 +3102,12 @@ 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/8.1.0/230-musl_libssp.patch b/toolchain/gcc/patches/8.1.0/230-musl_libssp.patch
> >> new file mode 100644
> >> index 0000000000..b3ab79cafb
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/230-musl_libssp.patch
> >> @@ -0,0 +1,13 @@
> >> +--- a/gcc/gcc.c
> >> ++++ b/gcc/gcc.c
> >> +@@ -868,7 +868,9 @@ 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/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch b/toolchain/gcc/patches/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch
> >> new file mode 100644
> >> index 0000000000..6f97356ac6
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/300-mips_Os_cpu_rtx_cost_model.patch
> >> @@ -0,0 +1,21 @@
> >> +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
> >> +@@ -19834,7 +19834,7 @@ 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/8.1.0/800-arm_v5te_no_ldrd_strd.patch b/toolchain/gcc/patches/8.1.0/800-arm_v5te_no_ldrd_strd.patch
> >> new file mode 100644
> >> index 0000000000..172295f28b
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/800-arm_v5te_no_ldrd_strd.patch
> >> @@ -0,0 +1,11 @@
> >> +--- a/gcc/config/arm/arm.h
> >> ++++ b/gcc/config/arm/arm.h
> >> +@@ -155,7 +155,7 @@ 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/8.1.0/810-arm-softfloat-libgcc.patch b/toolchain/gcc/patches/8.1.0/810-arm-softfloat-libgcc.patch
> >> new file mode 100644
> >> index 0000000000..5c9d86aead
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/810-arm-softfloat-libgcc.patch
> >> @@ -0,0 +1,33 @@
> >> +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/8.1.0/820-libgcc_pic.patch b/toolchain/gcc/patches/8.1.0/820-libgcc_pic.patch
> >> new file mode 100644
> >> index 0000000000..1a9678d480
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/820-libgcc_pic.patch
> >> @@ -0,0 +1,44 @@
> >> +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
> >> +@@ -923,11 +923,12 @@ $(libgcov-driver-objects): %$(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)";                                   \
> >> +@@ -948,7 +949,7 @@ 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)
> >> +@@ -1154,6 +1155,10 @@ 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/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch b/toolchain/gcc/patches/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch
> >> new file mode 100644
> >> index 0000000000..b9c9b161ad
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/840-armv4_pass_fix-v4bx_to_ld.patch
> >> @@ -0,0 +1,28 @@
> >> +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/8.1.0/850-use_shared_libgcc.patch b/toolchain/gcc/patches/8.1.0/850-use_shared_libgcc.patch
> >> new file mode 100644
> >> index 0000000000..f619f0e6a1
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/850-use_shared_libgcc.patch
> >> @@ -0,0 +1,54 @@
> >> +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}} \
> >> +   %{static-pie:-static -pie --no-dynamic-linker -z text}"
> >> diff --git a/toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch b/toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch
> >> new file mode 100644
> >> index 0000000000..d710e40717
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/851-libgcc_no_compat.patch
> >> @@ -0,0 +1,22 @@
> >> +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/8.1.0/870-ppc_no_crtsavres.patch b/toolchain/gcc/patches/8.1.0/870-ppc_no_crtsavres.patch
> >> new file mode 100644
> >> index 0000000000..a73081493b
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/870-ppc_no_crtsavres.patch
> >> @@ -0,0 +1,11 @@
> >> +--- a/gcc/config/rs6000/rs6000.c
> >> ++++ b/gcc/config/rs6000/rs6000.c
> >> +@@ -24424,7 +24424,7 @@ 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/8.1.0/881-no_tm_section.patch b/toolchain/gcc/patches/8.1.0/881-no_tm_section.patch
> >> new file mode 100644
> >> index 0000000000..fab5db3be5
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/881-no_tm_section.patch
> >> @@ -0,0 +1,11 @@
> >> +--- 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/8.1.0/900-bad-mips16-crt.patch b/toolchain/gcc/patches/8.1.0/900-bad-mips16-crt.patch
> >> new file mode 100644
> >> index 0000000000..dd6e9dc889
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/900-bad-mips16-crt.patch
> >> @@ -0,0 +1,9 @@
> >> +--- 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/8.1.0/910-mbsd_multi.patch b/toolchain/gcc/patches/8.1.0/910-mbsd_multi.patch
> >> new file mode 100644
> >> index 0000000000..83d41f2f1a
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/910-mbsd_multi.patch
> >> @@ -0,0 +1,146 @@
> >> +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
> >> +@@ -107,6 +107,9 @@ static dump_flags_t original_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);
> >> +@@ -461,6 +464,12 @@ 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;
> >> +@@ -1110,6 +1119,47 @@ 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 (UNKNOWN_LOCATION, "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
> >> +@@ -1469,6 +1469,9 @@ 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
> >> +@@ -1547,6 +1547,9 @@ 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
> >> +@@ -2056,6 +2056,9 @@ 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
> >> +@@ -7005,6 +7005,17 @@ 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/8.1.0/920-specs_nonfatal_getenv.patch b/toolchain/gcc/patches/8.1.0/920-specs_nonfatal_getenv.patch
> >> new file mode 100644
> >> index 0000000000..c3836e63af
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/920-specs_nonfatal_getenv.patch
> >> @@ -0,0 +1,22 @@
> >> +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
> >> +@@ -9347,8 +9347,10 @@ 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/8.1.0/930-fix-mips-noexecstack.patch b/toolchain/gcc/patches/8.1.0/930-fix-mips-noexecstack.patch
> >> new file mode 100644
> >> index 0000000000..706d67f7c9
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/930-fix-mips-noexecstack.patch
> >> @@ -0,0 +1,111 @@
> >> +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
> >> +@@ -22627,6 +22627,9 @@ mips_starting_frame_offset (void)
> >> + #undef TARGET_STARTING_FRAME_OFFSET
> >> + #define TARGET_STARTING_FRAME_OFFSET mips_starting_frame_offset
> >> +
> >> ++#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/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch b/toolchain/gcc/patches/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
> >> new file mode 100644
> >> index 0000000000..fb4cb1533a
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
> >> @@ -0,0 +1,168 @@
> >> +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(+)
> >> +
> >> +--- 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)
> >> +--- 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)
> >> diff --git a/toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch b/toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
> >> new file mode 100644
> >> index 0000000000..1dd05080d3
> >> --- /dev/null
> >> +++ b/toolchain/gcc/patches/8.1.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
> >> @@ -0,0 +1,67 @@
> >> +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(-)
> >> +
> >> +--- a/gotools/Makefile.am
> >> ++++ b/gotools/Makefile.am
> >> +@@ -26,6 +26,7 @@ PWD_COMMAND = $${PWDCMD-pwd}
> >> + STAMP = echo timestamp >
> >> +
> >> + libgodir = ../$(target_noncanonical)/libgo
> >> ++libgccdir = ../$(target_noncanonical)/libgcc
> >> + LIBGODEP = $(libgodir)/libgo.la
> >> +
> >> + LIBGOTOOL = $(libgodir)/libgotool.a
> >> +@@ -41,7 +42,8 @@ GOCFLAGS = $(CFLAGS_FOR_TARGET)
> >> + GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
> >> +
> >> + AM_GOCFLAGS = -I $(libgodir)
> >> +-AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
> >> ++AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
> >> ++      -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
> >> + GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@
> >> +
> >> + libgosrcdir = $(srcdir)/../libgo/go
> >> +--- a/gotools/Makefile.in
> >> ++++ b/gotools/Makefile.in
> >> +@@ -263,6 +263,7 @@ mkinstalldirs = $(SHELL) $(toplevel_srcd
> >> + PWD_COMMAND = $${PWDCMD-pwd}
> >> + STAMP = echo timestamp >
> >> + libgodir = ../$(target_noncanonical)/libgo
> >> ++libgccdir = ../$(target_noncanonical)/libgcc
> >> + LIBGODEP = $(libgodir)/libgo.la
> >> + LIBGOTOOL = $(libgodir)/libgotool.a
> >> + @NATIVE_FALSE at GOCOMPILER = $(GOC)
> >> +@@ -271,7 +272,8 @@ LIBGOTOOL = $(libgodir)/libgotool.a
> >> + @NATIVE_TRUE at GOCOMPILER = $(GOC_FOR_TARGET) $(XGCC_FLAGS_FOR_TARGET)
> >> + GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
> >> + AM_GOCFLAGS = -I $(libgodir)
> >> +-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 $@
> >> + libgosrcdir = $(srcdir)/../libgo/go
> >> + cmdsrcdir = $(libgosrcdir)/cmd
> >> --
> >> 2.17.1
> >>
> >>
> >> _______________________________________________
> >> openwrt-devel mailing list
> >> openwrt-devel at lists.openwrt.org
> >> https://lists.openwrt.org/listinfo/openwrt-devel

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