Bug#778166: webkitgtk: ftbfs with GCC-5

[Matthias Klose]

Package: src:webkitgtk
Version: 2.4.8-1
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/webkitgtk_2.4.8-1_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

[...]
libtoolize: Remember to add `LT_INIT' to configure.ac.
libtoolize: Consider adding `-I Source/autotools' to ACLOCAL_AMFLAGS in Makefile.am.
autoreconf: running: /usr/bin/autoconf --include=Source/autotools --force
autoreconf: running: /usr/bin/autoheader --include=Source/autotools --force
autoreconf: running: automake --add-missing --copy --force-missing
autoreconf: Leaving directory `.'
touch reconf-stamp
dh_testdir
test -d build-3.0 || mkdir build-3.0
cd build-3.0; \
env -u AR_FLAGS \
CFLAGS="-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall" \
CXXFLAGS="-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall" \
CPPFLAGS="-D_FORTIFY_SOURCE=2" \
LDFLAGS="-Wl,-z,relro -Wl,--as-needed" \
../configure --prefix=/usr \
	--with-gtk=3.0 \
	--libdir=\${prefix}/lib/x86_64-linux-gnu --disable-silent-rules --host=x86_64-linux-gnu --build=x86_64-linux-gnu --enable-gtk-doc --enable-introspection --enable-geolocation \
	 --enable-webkit2 --libexecdir=\${libdir}/webkit2gtk-3.0/libexec
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking for perl... /usr/bin/perl
checking for python... /usr/bin/python
checking for ruby... /usr/bin/ruby
checking for bison... /usr/bin/bison
checking for mv... /bin/mv
checking for grep... /bin/grep
checking for gperf... /usr/bin/gperf
checking for flex... /usr/bin/flex
checking for gawk... gawk
checking for x86_64-linux-gnu-gcc... x86_64-linux-gnu-gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether x86_64-linux-gnu-gcc accepts -g... yes
checking for x86_64-linux-gnu-gcc option to accept ISO C89... none needed
checking whether x86_64-linux-gnu-gcc understands -c and -o together... yes
checking for x86_64-linux-gnu-g++... x86_64-linux-gnu-g++
checking whether we are using the GNU C++ compiler... yes
checking whether x86_64-linux-gnu-g++ accepts -g... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
configure: error: Compiler GCC >= 4.7 or Clang >= 3.3 is required for C compilation
make: *** [build-stamp] Error 1
debian/rules:121: recipe for target 'build-stamp' failed
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2