[OpenWrt-Devel] [PATCH] uClibc++: Fix two bugs
Rosen Penev
rosenp at gmail.com
Thu Oct 3 23:47:09 EDT 2019
The first allows usage of several functions in the std namespace, which
broke compilation of gddrescue specifically with uClibc-ng and uClibc++.
The second allows usage of long long with normal C++11, which is part of
the standard. Before, std=gnu++11 needed to be passsed to work around it.
As a result of the second patch, the pedantic patch can safely be removed.
Both patches have been sent upstream.
Added -std=c++11 to CFLAGS to guarentee proper inclusion of long long.
Fixed up license information according to SPDX.
Small cleanups for consistency.
Signed-off-by: Rosen Penev <rosenp at gmail.com>
---
package/libs/uclibc++/Makefile | 11 +-
.../patches/002-undef-functions.patch | 40 +++++
.../uclibc++/patches/004-no-pedantic.patch | 13 --
...ibc-Make-long-long-available-to-C-11.patch | 156 ++++++++++++++++++
4 files changed, 201 insertions(+), 19 deletions(-)
create mode 100644 package/libs/uclibc++/patches/002-undef-functions.patch
delete mode 100644 package/libs/uclibc++/patches/004-no-pedantic.patch
create mode 100644 package/libs/uclibc++/patches/004-uClibc-Make-long-long-available-to-C-11.patch
diff --git a/package/libs/uclibc++/Makefile b/package/libs/uclibc++/Makefile
index 3adf70b360..7a0d9094ff 100644
--- a/package/libs/uclibc++/Makefile
+++ b/package/libs/uclibc++/Makefile
@@ -10,18 +10,17 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=uclibc++
PKG_VERSION:=0.2.5
-PKG_RELEASE:=2
+PKG_RELEASE:=3
PKG_SOURCE:=uClibc++-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=https://cxx.uclibc.org/src/
PKG_HASH:=596fb9ed7295564ce4c70ae6076a18f92e72f70310d70c98520bbca85c77895a
-
PKG_BUILD_DIR:=$(BUILD_DIR)/uClibc++-$(PKG_VERSION)
-PKG_BUILD_PARALLEL:=1
-PKG_USE_MIPS16:=0
-PKG_LICENSE:=LGPL-2.1+
+PKG_LICENSE:=LGPL-2.1-or-later
PKG_INSTALL:=1
+PKG_BUILD_PARALLEL:=1
+PKG_USE_MIPS16:=0
include $(INCLUDE_DIR)/package.mk
@@ -45,7 +44,7 @@ UCLIBC_TARGET_ARCH:=$(shell echo $(ARCH) | sed -e s'/-.*//' \
-e 's/mipsel.*/mips/' \
)
-TARGET_CFLAGS += $(FPIC) -nostdinc++
+TARGET_CFLAGS += $(FPIC) -nostdinc++ -std=c++11
TARGET_LDFLAGS += -Wl,--gc-sections
ifneq ($(CONFIG_CCACHE),)
diff --git a/package/libs/uclibc++/patches/002-undef-functions.patch b/package/libs/uclibc++/patches/002-undef-functions.patch
new file mode 100644
index 0000000000..008a8232db
--- /dev/null
+++ b/package/libs/uclibc++/patches/002-undef-functions.patch
@@ -0,0 +1,40 @@
+From 8245f62c1e7aba150f666b3c3a1dda646dee6d4b Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp at gmail.com>
+Date: Fri, 27 Sep 2019 13:12:44 -0700
+Subject: [PATCH] cstdio: Add undef for four functions
+
+When compiling with uClibc-ng, these functions get defined as macros and
+become unavailable for std.
+
+Fixes programs that use the std versions of these functions.
+
+This matches libstdcpp behavior.
+
+Signed-off-by: Rosen Penev <rosenp at gmail.com>
+---
+ include/cstdio | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/include/cstdio b/include/cstdio
+index f959ff5..0a42458 100644
+--- a/include/cstdio
++++ b/include/cstdio
+@@ -21,6 +21,15 @@
+ #ifndef __HEADER_CSTDIO
+ #define __HEADER_CSTDIO 1
+
++#undef clearerr
++#undef feof
++#undef ferror
++#undef fgetc
++#undef fputc
++#undef getc
++#undef getchar
++#undef putc
++#undef putchar
+
+ namespace std{
+ using ::FILE;
+--
+2.17.1
+
diff --git a/package/libs/uclibc++/patches/004-no-pedantic.patch b/package/libs/uclibc++/patches/004-no-pedantic.patch
deleted file mode 100644
index 5128ca3f83..0000000000
--- a/package/libs/uclibc++/patches/004-no-pedantic.patch
+++ /dev/null
@@ -1,13 +0,0 @@
---- a/Rules.mak
-+++ b/Rules.mak
-@@ -200,10 +200,6 @@ $(eval $(call check-gxx-var,-std=gnu++14))
- $(eval $(call check-gxx-var,-Wno-sized-deallocation))
- $(eval $(call check-gxx-var,-Wno-tautological-compare))
-
--# Add a bunch of extra pedantic annoyingly strict checks
--XWARNINGS=$(call qstrip,$(UCLIBCXX_WARNINGS)) -Wno-trigraphs -pedantic
--CPU_CFLAGS=$(call qstrip,$(CPU_CFLAGS-y))
--
- # Some nice CFLAGS to work with
- GEN_CFLAGS:=-fno-builtin
- CFLAGS:=$(XWARNINGS) $(CPU_CFLAGS)
diff --git a/package/libs/uclibc++/patches/004-uClibc-Make-long-long-available-to-C-11.patch b/package/libs/uclibc++/patches/004-uClibc-Make-long-long-available-to-C-11.patch
new file mode 100644
index 0000000000..ba99689e40
--- /dev/null
+++ b/package/libs/uclibc++/patches/004-uClibc-Make-long-long-available-to-C-11.patch
@@ -0,0 +1,156 @@
+From 8151579eb36d9366632242415ff3f5177fa5e1e2 Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp at gmail.com>
+Date: Thu, 3 Oct 2019 18:58:43 -0700
+Subject: [PATCH] uClibc++: Make long long available to C++11
+
+C++11 makes long long available. It is no longer a GNU extension.
+
+Signed-off-by: Rosen Penev <rosenp at gmail.com>
+---
+ include/istream | 4 ++--
+ include/istream_helpers | 2 +-
+ include/ostream | 8 ++++----
+ include/ostream_helpers | 8 ++++----
+ tests/sstreamtest.cpp | 4 ++--
+ 5 files changed, 13 insertions(+), 13 deletions(-)
+
+diff --git a/include/istream b/include/istream
+index 72a8834..2d58abd 100644
+--- a/include/istream
++++ b/include/istream
+@@ -72,7 +72,7 @@ namespace std{
+ basic_istream<charT,traits>& operator>>(void*& p);
+ basic_istream<charT,traits>& operator>>(basic_streambuf<char_type,traits>* sb);
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+ basic_istream<charT,traits>& operator>>(long long& n);
+ basic_istream<charT,traits>& operator>>(unsigned long long& n);
+ #endif
+@@ -455,7 +455,7 @@ namespace std{
+ return *this;
+ }
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+ template <class charT, class traits> _UCXXEXPORT basic_istream<charT,traits>&
+ basic_istream<charT,traits>::operator>>(long long& n)
+ {
+diff --git a/include/istream_helpers b/include/istream_helpers
+index d87e0c7..f2c793f 100644
+--- a/include/istream_helpers
++++ b/include/istream_helpers
+@@ -301,7 +301,7 @@ namespace std{
+ };
+
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+ template <class traits> class _UCXXEXPORT __istream_readin<traits, char, long long>{
+ public:
+ inline static void readin(basic_istream<char, traits >& stream, long long & var)
+diff --git a/include/ostream b/include/ostream
+index 289514c..3072589 100644
+--- a/include/ostream
++++ b/include/ostream
+@@ -85,7 +85,7 @@ namespace std {
+ basic_ostream<charT,traits>& operator<<(long double f);
+ basic_ostream<charT,traits>& operator<<(void* p);
+ basic_ostream<charT,traits>& operator<<(basic_streambuf<char_type,traits>* sb);
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+ basic_ostream<charT,traits>& operator<<(long long n);
+ basic_ostream<charT,traits>& operator<<(unsigned long long n);
+ #endif
+@@ -221,7 +221,7 @@ namespace std {
+ return *this;
+ }
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+ template <class charT, class traits> _UCXXEXPORT basic_ostream<charT,traits>& basic_ostream<charT, traits>::operator<<(long long n)
+ {
+ sentry s(*this);
+@@ -487,7 +487,7 @@ namespace std {
+ #endif
+
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+
+ //Support for output of long long data types
+
+@@ -509,7 +509,7 @@ template<class Ch, class Tr> _UCXXEXPORT basic_ostream<Ch, Tr>&
+ }
+
+
+-#endif //__STRICT_ANSI__
++#endif // !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+
+
+
+diff --git a/include/ostream_helpers b/include/ostream_helpers
+index fa50407..f4d33f9 100644
+--- a/include/ostream_helpers
++++ b/include/ostream_helpers
+@@ -142,7 +142,7 @@ namespace std{
+ }
+ };
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+
+ template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, signed long long int>{
+ public:
+@@ -237,7 +237,7 @@ namespace std{
+ };
+
+
+-#endif //__STRICT_ANSI__
++#endif // !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+
+ template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, double>{
+ public:
+@@ -357,7 +357,7 @@ namespace std{
+ }
+ };
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+
+ template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, signed long long int>{
+ public:
+@@ -428,7 +428,7 @@ namespace std{
+ };
+
+
+-#endif //__STRICT_ANSI__
++#endif // !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+
+ template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, double>{
+ public:
+diff --git a/tests/sstreamtest.cpp b/tests/sstreamtest.cpp
+index 36b3470..ea946a9 100644
+--- a/tests/sstreamtest.cpp
++++ b/tests/sstreamtest.cpp
+@@ -9,7 +9,7 @@ int main(){
+ int i;
+ std::string s;
+ char c;
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+ long long ll;
+ unsigned long long ull;
+ #endif
+@@ -32,7 +32,7 @@ int main(){
+
+
+
+-#ifndef __STRICT_ANSI__
++#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
+ a.str("678 76 54");
+ a >> ll >> ull >> s;
+ std::cout << "ll (should be 678): " << ll << std::endl;
+--
+2.17.1
+
--
2.17.1
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