#12825: Fine-tune auto-detection of whether to install GCC
------------------------+---------------------------------------------------
Reporter: jdemeyer | Owner: GeorgSWeber
Type: defect | Status: new
Priority: blocker | Milestone: sage-5.0
Component: build | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
------------------------+---------------------------------------------------
1. GCC-4.7.x on ia64 is very broken. We should install GCC in this case.
Note that currently it won't actually work as MPIR and MPFR fail to build
with gcc-4.7.x on ia64. For MPIR, see #11616.
2. When Debian multiarch is detected, do not install GCC. The stderr of
"gcc -v -E -x c /dev/null" says:
{{{
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2
/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.5.2-8ubuntu4' --with-bugurl=file:///usr/share/doc/gcc-4.5/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-
suffix=-4.5 --enable-shared --enable-multiarch --with-multiarch-
defaults=x86_64-linux-gnu --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib/x86_64-linux-gnu --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.5
--libdir=/usr/lib/x86_64-linux-gnu --enable-nls --with-sysroot=/ --enable-
clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-
plugin --enable-gold --enable-ld=default --with-plugin-ld=ld.gold
--enable-objc-gc --disable-werror --with-arch-32=i686 --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 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
COLLECT_GCC_OPTIONS='-v' '-c' '-mtune=generic' '-march=x86-64'
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2/cc1 -quiet -v
/dev/null -D_FORTIFY_SOURCE=2 -quiet -dumpbase null -mtune=generic
-march=x86-64 -auxbase null -version -fstack-protector -o /tmp/ccPmIBIJ.s
GNU C (Ubuntu/Linaro 4.5.2-8ubuntu4) version 4.5.2 (x86_64-linux-gnu)
compiled by GNU C version 4.5.2, GMP version 4.3.2, MPFR version
3.0.0-p8, MPC version 0.9
warning: MPFR header version 3.0.0-p8 differs from library version 3.0.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/x86_64-linux-gnu/gcc/x86_64
-linux-gnu/4.5.2/../../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2/include
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
}}}
We can detect the '/usr/include/x86_64-linux-gnu' line here.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12825>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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