Bug#667280: minetest: ftbfs with GCC-4.7

[Matthias Klose]

Package: minetest
Version: 0.3.1+dfsg-2
Severity: important
Tags: sid wheezy
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-4.7

The package fails to build in a test rebuild on at least amd64 with
gcc-4.7/g++-4.7, but succeeds to build with gcc-4.6/g++-4.6. The
severity of this report may be raised before the wheezy release.

filesys.cpp:236:25: error: 'fork' was not declared in this scope

The full build log can be found at:
http://people.debian.org/~lucas/logs/2012/03/29-clang-gcc47/unstable-gcc47/minetest_0.3.1+dfsg-2_unstable-gcc47.log
The last lines of the build log are at the end of this report.

Some hints on fixing these issues can be found at
http://gcc.gnu.org/gcc-4.7/porting_to.html

To build with GCC 4.7, either set CC=gcc-4.7 CXX=g++-4.7 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

[...]
cd /«BUILDDIR»/minetest-0.3.1+dfsg/src && /usr/bin/c++   -DUSE_CMAKE_CONFIG_H -g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2  -DNDEBUG -Wall  -Wno-unused-but-set-variable -ffast-math -Wall -fomit-frame-pointer -pipe -funroll-loops -I/«BUILDDIR»/minetest-0.3.1+dfsg/src -I/usr/include/irrlicht -I/«BUILDDIR»/minetest-0.3.1+dfsg/src/Release -I/usr/include/jthread    -o CMakeFiles/minetest.dir/inventory.cpp.o -c /«BUILDDIR»/minetest-0.3.1+dfsg/src/inventory.cpp
/«BUILDDIR»/minetest-0.3.1+dfsg/src/inventory.cpp: In member function 'InventoryItem* InventoryList::takeItem(irr::u32, irr::u32)':
/«BUILDDIR»/minetest-0.3.1+dfsg/src/inventory.cpp:558:9: warning: converting 'false' to pointer type 'InventoryItem*' [-Wconversion-null]
/usr/bin/cmake -E cmake_progress_report /«BUILDDIR»/minetest-0.3.1+dfsg/CMakeFiles 19
[ 19%] Building CXX object src/CMakeFiles/minetest.dir/debug.cpp.o
cd /«BUILDDIR»/minetest-0.3.1+dfsg/src && /usr/bin/c++   -DUSE_CMAKE_CONFIG_H -g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2  -DNDEBUG -Wall  -Wno-unused-but-set-variable -ffast-math -Wall -fomit-frame-pointer -pipe -funroll-loops -I/«BUILDDIR»/minetest-0.3.1+dfsg/src -I/usr/include/irrlicht -I/«BUILDDIR»/minetest-0.3.1+dfsg/src/Release -I/usr/include/jthread    -o CMakeFiles/minetest.dir/debug.cpp.o -c /«BUILDDIR»/minetest-0.3.1+dfsg/src/debug.cpp
/usr/bin/cmake -E cmake_progress_report /«BUILDDIR»/minetest-0.3.1+dfsg/CMakeFiles 20
[ 20%] Building CXX object src/CMakeFiles/minetest.dir/serialization.cpp.o
cd /«BUILDDIR»/minetest-0.3.1+dfsg/src && /usr/bin/c++   -DUSE_CMAKE_CONFIG_H -g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2  -DNDEBUG -Wall  -Wno-unused-but-set-variable -ffast-math -Wall -fomit-frame-pointer -pipe -funroll-loops -I/«BUILDDIR»/minetest-0.3.1+dfsg/src -I/usr/include/irrlicht -I/«BUILDDIR»/minetest-0.3.1+dfsg/src/Release -I/usr/include/jthread    -o CMakeFiles/minetest.dir/serialization.cpp.o -c /«BUILDDIR»/minetest-0.3.1+dfsg/src/serialization.cpp
/usr/bin/cmake -E cmake_progress_report /«BUILDDIR»/minetest-0.3.1+dfsg/CMakeFiles 
[ 20%] Building CXX object src/CMakeFiles/minetest.dir/light.cpp.o
cd /«BUILDDIR»/minetest-0.3.1+dfsg/src && /usr/bin/c++   -DUSE_CMAKE_CONFIG_H -g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2  -DNDEBUG -Wall  -Wno-unused-but-set-variable -ffast-math -Wall -fomit-frame-pointer -pipe -funroll-loops -I/«BUILDDIR»/minetest-0.3.1+dfsg/src -I/usr/include/irrlicht -I/«BUILDDIR»/minetest-0.3.1+dfsg/src/Release -I/usr/include/jthread    -o CMakeFiles/minetest.dir/light.cpp.o -c /«BUILDDIR»/minetest-0.3.1+dfsg/src/light.cpp
/usr/bin/cmake -E cmake_progress_report /«BUILDDIR»/minetest-0.3.1+dfsg/CMakeFiles 21
[ 21%] Building CXX object src/CMakeFiles/minetest.dir/filesys.cpp.o
cd /«BUILDDIR»/minetest-0.3.1+dfsg/src && /usr/bin/c++   -DUSE_CMAKE_CONFIG_H -g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2  -DNDEBUG -Wall  -Wno-unused-but-set-variable -ffast-math -Wall -fomit-frame-pointer -pipe -funroll-loops -I/«BUILDDIR»/minetest-0.3.1+dfsg/src -I/usr/include/irrlicht -I/«BUILDDIR»/minetest-0.3.1+dfsg/src/Release -I/usr/include/jthread    -o CMakeFiles/minetest.dir/filesys.cpp.o -c /«BUILDDIR»/minetest-0.3.1+dfsg/src/filesys.cpp
/«BUILDDIR»/minetest-0.3.1+dfsg/src/filesys.cpp: In function 'bool fs::RecursiveDelete(std::string)':
/«BUILDDIR»/minetest-0.3.1+dfsg/src/filesys.cpp:236:25: error: 'fork' was not declared in this scope
/«BUILDDIR»/minetest-0.3.1+dfsg/src/filesys.cpp:254:22: error: 'execv' was not declared in this scope
/«BUILDDIR»/minetest-0.3.1+dfsg/src/filesys.cpp:257:10: error: '_exit' was not declared in this scope
/«BUILDDIR»/minetest-0.3.1+dfsg/src/filesys.cpp:270:1: warning: control reaches end of non-void function [-Wreturn-type]
make[4]: *** [src/CMakeFiles/minetest.dir/filesys.cpp.o] Error 1
make[4]: Leaving directory `/«BUILDDIR»/minetest-0.3.1+dfsg'
make[3]: *** [src/CMakeFiles/minetest.dir/all] Error 2
make[2]: *** [all] Error 2
make[1]: *** [override_dh_auto_build] Error 2
make[3]: Leaving directory `/«BUILDDIR»/minetest-0.3.1+dfsg'
make[2]: Leaving directory `/«BUILDDIR»/minetest-0.3.1+dfsg'
make[1]: Leaving directory `/«BUILDDIR»/minetest-0.3.1+dfsg'
make: *** [build-arch] Error 2
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2