For some reason there is no define of __linux on ppc64el : On ppc64el :
$ g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/powerpc64le-linux-gnu/7/lto-wrapper Target: powerpc64le-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 7.2.0-1' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=powerpc64le-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libquadmath --enable-plugin --enable-default-pie --with-system-zlib --enable-objc-gc=auto --enable-secureplt --with-cpu=power8 --enable-targets=powerpcle-linux --disable-multilib --enable-multiarch --disable-werror --with-long-double-128 --enable-checking=release --build=powerpc64le-linux-gnu --host=powerpc64le-linux-gnu --target=powerpc64le-linux-gnu Thread model: posix gcc version 7.2.0 (Debian 7.2.0-1) $ echo | gcc -dM -E -|grep linux #define __linux 1 #define __linux__ 1 #define __gnu_linux__ 1 #define linux 1 $ echo | gcc -std=c++14 -dM -E -|grep linux cc1: warning: command line option ‘-std=c++14’ is valid for C++/ObjC++ but not for C #define __linux__ 1 #define __gnu_linux__ 1 also : $ echo | gcc-6 -std=c++14 -dM -E -|grep linux cc1: warning: command line option ‘-std=c++14’ is valid for C++/ObjC++ but not for C #define __linux__ 1 #define __gnu_linux__ 1 On amd64 : $ g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 7.2.0-1' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64- linux-gn u --target=x86_64-linux-gnu Thread model: posix gcc version 7.2.0 (Debian 7.2.0-1) $ echo | gcc -dM -E -|grep linux #define __linux 1 #define __linux__ 1 #define __gnu_linux__ 1 #define linux 1 $ echo | gcc -std=c++14 -dM -E -|grep linux cc1: warning: command line option ‘-std=c++14’ is valid for C++/ObjC++ but not for C #define __linux 1 #define __linux__ 1 #define __gnu_linux__ 1 #define linux 1 $ echo | gcc-6 -std=c++14 -dM -E -|grep linux cc1: warning: command line option ‘-std=c++14’ is valid for C++/ObjC++ but not for C #define __linux 1 #define __linux__ 1 #define __gnu_linux__ 1 #define linux 1 Previous version of contextfree didn't use that new code. It seems like this is still an unclear behaviour of gcc : https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69473 I'd advise to move to __linux__ which the attached patch does. F.
Description: Fix undefined macro on powerpc On powerpc and maybe some other architecture, __linux macro is not defined : https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69473 Just use __linux__ instead Author: Frédéric Bonnard <fre...@linux.vnet.ibm.com> Bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69473 --- This patch header follows DEP-3: http://dep.debian.net/deps/dep3/ Index: contextfree-3.0.11.4+dfsg1/src-unix/posixSystem.cpp =================================================================== --- contextfree-3.0.11.4+dfsg1.orig/src-unix/posixSystem.cpp 2017-08-13 19:25:02.000000000 +0000 +++ contextfree-3.0.11.4+dfsg1/src-unix/posixSystem.cpp 2017-08-21 11:45:39.789635483 +0000 @@ -232,7 +232,7 @@ size_t PosixSystem::getPhysicalMemory() { -#ifdef __linux +#ifdef __linux__ #if defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE) uint64_t size = sysconf(_SC_PHYS_PAGES) * static_cast<uint64_t>(sysconf(_SC_PAGESIZE)); if (size > MaximumMemory) @@ -241,7 +241,7 @@ #else return 0; #endif -#else // __linux +#else // __linux__ int mib[2]; mib[0] = CTL_HW; #if defined(HW_MEMSIZE) @@ -267,6 +267,6 @@ return static_cast<size_t>(size); } return 0; -#endif // __linux +#endif // __linux__ }
