Package: python2.7 Version: 2.7.9-1 Severity: normal I am unable to build programs using Python's distutils, because it's invoking the wrong compiler. It's trying to use a gcc 4.9 flag, but is invoking gcc 4.7, which aborts due to an unrecognised flag.
I think what's happened here is that it's picked up the non-versioned
gcc symlink from the system where Python was compiled. That system only
had gcc 4.9 installed, so the symlink pointed at the right compiler. My
system has the symlink provided by the stock gcc package, which points
at gcc 4.7.
The simplest fix is probably to change Python to use a versioned
compiler executable.
$ python
Python 2.7.9 (default, Mar 1 2015, 12:57:24)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from distutils import sysconfig
>>> sysconfig.get_config_var('CC')
'x86_64-linux-gnu-gcc -pthread'
>>> sysconfig.get_config_var('CFLAGS')
'-fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes
-D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat
-Werror=format-security '
>>>
$ x86_64-linux-gnu-gcc -fstack-protector-strong
x86_64-linux-gnu-gcc: error: unrecognized command line option
‘-fstack-protector-strong’
x86_64-linux-gnu-gcc: fatal error: no input files
compilation terminated.
$ x86_64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=x86_64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.7.4-3'
--with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs
--enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.7 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib
--enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-gnu-unique-object --disable-libmudflap
--enable-plugin --with-system-zlib --enable-objc-gc --enable-multiarch
--with-arch-32=i586 --with-abi=m64 --with-multilib-list=m32,m64,mx32
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.7.4 (Debian 4.7.4-3)
$ ls -l /usr/bin/x86_64-linux-gnu-gcc
lrwxrwxrwx 1 root root 7 Sep 27 2012 /usr/bin/x86_64-linux-gnu-gcc ->
gcc-4.7
-- System Information:
Debian Release: 7.8
APT prefers stable
APT policy: (990, 'stable'), (500, 'sid'), (500, 'unstable'), (500,
'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
Versions of packages python2.7 depends on:
ii libpython2.7-stdlib 2.7.9-2
ii mime-support 3.52-1+deb7u1
ii python2.7-minimal 2.7.9-2
python2.7 recommends no packages.
Versions of packages python2.7 suggests:
ii binutils 2.25-6
pn python2.7-doc <none>
-- no debconf information
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