Bug#777986: llvm-toolchain-3.5: ftbfs with GCC-5

[Matthias Klose]

Package: src:llvm-toolchain-3.5
Version: 1:3.5-9
Severity: normal
Tags: sid stretch
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-5

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-5/g++-5, but succeeds to build with gcc-4.9/g++-4.9. The
severity of this report may be raised before the stretch release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc5-20150205/llvm-toolchain-3.5_3.5-9_unstable_gcc5.log
The last lines of the build log are at the end of this report.

To build with GCC 5, either set CC=gcc-5 CXX=g++-5 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t experimental install g++ 

Common build failures are C11 as the default C mode, new warnings
resulting in build failures with -Werror turned on, or new/dropped
symbols in Debian symbols files.  For other C/C++ related build failures
see the porting guide at http://gcc.gnu.org/gcc-5/porting_to.html

[...]
debian/lldb-X.Y.install.in => debian/lldb-3.5.install
debian/lldb-X.Y.lintian-overrides.in => debian/lldb-3.5.lintian-overrides
debian/lldb-X.Y.manpages.in => debian/lldb-3.5.manpages
debian/lldb-X.Y.postinst.in => debian/lldb-3.5.postinst
debian/llvm-X.Y-dev.dirs.in => debian/llvm-3.5-dev.dirs
debian/llvm-X.Y-dev.install.in => debian/llvm-3.5-dev.install
debian/llvm-X.Y-dev.links.in => debian/llvm-3.5-dev.links
debian/llvm-X.Y-doc.dirs.in => debian/llvm-3.5-doc.dirs
debian/llvm-X.Y-doc.install.in => debian/llvm-3.5-doc.install
debian/llvm-X.Y-examples.dirs.in => debian/llvm-3.5-examples.dirs
debian/llvm-X.Y-examples.examples.in => debian/llvm-3.5-examples.examples
debian/llvm-X.Y-examples.links.in => debian/llvm-3.5-examples.links
debian/llvm-X.Y-runtime.binfmt.in => debian/llvm-3.5-runtime.binfmt
debian/llvm-X.Y-runtime.install.in => debian/llvm-3.5-runtime.install
debian/llvm-X.Y-runtime.links.in => debian/llvm-3.5-runtime.links
debian/llvm-X.Y-runtime.lintian-overrides.in => debian/llvm-3.5-runtime.lintian-overrides
debian/llvm-X.Y-runtime.manpages.in => debian/llvm-3.5-runtime.manpages
debian/llvm-X.Y-runtime.postinst.in => debian/llvm-3.5-runtime.postinst
debian/llvm-X.Y-runtime.prerm.in => debian/llvm-3.5-runtime.prerm
debian/llvm-X.Y-tools.dirs.in => debian/llvm-3.5-tools.dirs
debian/llvm-X.Y-tools.install.in => debian/llvm-3.5-tools.install
debian/llvm-X.Y.dirs.in => debian/llvm-3.5.dirs
debian/llvm-X.Y.install.in => debian/llvm-3.5.install
debian/llvm-X.Y.links.in => debian/llvm-3.5.links
debian/llvm-X.Y.lintian-overrides.in => debian/llvm-3.5.lintian-overrides
debian/llvm-X.Y.manpages.in => debian/llvm-3.5.manpages
debian/pollycc.in => debian/pollycc
debian/python-clang-X.Y.install.in => debian/python-clang-3.5.install
debian/python-lldb-X.Y.install.in => debian/python-lldb-3.5.install
debian/python-lldb-X.Y.links.in => debian/python-lldb-3.5.links
sh: 1: gcc-: not found
dpkg-architecture: warning: couldn't determine gcc system type, falling back to default (native compilation)
echo "Using gcc: "
sh: 1: gcc-: not found
dpkg-architecture: warning: couldn't determine gcc system type, falling back to default (native compilation)
sh: 1: gcc-: not found
dpkg-architecture: warning: couldn't determine gcc system type, falling back to default (native compilation)
sh: 1: gcc-: not found
dpkg-architecture: warning: couldn't determine gcc system type, falling back to default (native compilation)
sh: 1: gcc-: not found
dpkg-architecture: warning: couldn't determine gcc system type, falling back to default (native compilation)
Using gcc: 
gcc- -v
make[1]: gcc-: Command not found
make[1]: *** [override_dh_auto_configure] Error 127
debian/rules:148: recipe for target 'override_dh_auto_configure' failed
make[1]: Leaving directory '/«PKGBUILDDIR»'
make: *** [build-arch] Error 2
debian/rules:129: recipe for target 'build-arch' failed
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2