Bug#852104: g++-7 fails to include standard include path
Package: g++-7
Version: 7-20170118-1
Severity: important
The latest gcc-7 experimental snapshot appears to be missing
'/usr/include/g++/7' from the standard include search paths, and as a
result can't compile anything using any stl headers, e.g.:
#include <iostream>
int main() {}
fails to compile with:
test.cpp:1:10: fatal error: iostream: No such file or directory
#include <iostream>
^~~~~~~~~~
compilation terminated.
Running cpp-7 -E -x c++ -v gives me:
Using built-in specs.
COLLECT_GCC=cpp-7
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian
7-20170118-1' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared
--enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --libdir=/usr/lib
--enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin
--enable-default-pie --with-system-zlib --with-target-system-zlib
--enable-objc-gc=auto --enable-multiarch --disable-werror
--with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --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 7.0.0 20170118 (experimental) [trunk revision 244601]
(Debian 7-20170118-1)
COLLECT_GCC_OPTIONS='-E' '-v' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/7/cc1plus -E -quiet -v -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE - -mtune=generic -march=x86-64
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/7/../../../../include/c++/7/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/7/../../../../include/x86_64-linux-gnu/x86_64-linux-gnu/c++/7"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/7/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/x86_64-linux-gnu/c++/7
/usr/include/c++/7/backward
/usr/lib/gcc/x86_64-linux-gnu/7/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/7/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
which seems to be missing '/usr/include/c++/7' as the first entry.
Under cpp-6, for comparison, I get:
... (snip) ...
#include <...> search starts here:
/usr/include/c++/6
/usr/include/x86_64-linux-gnu/c++/6
/usr/include/c++/6/backward
/usr/lib/gcc/x86_64-linux-gnu/6/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/6/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
Compilation worked fine with the previous snapshot version (though I
don't seem to still have the .deb around to get the actual include list).
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