Ian Lance Taylor wrote:
On Fri, Jul 19, 2013 at 5:27 AM, Patrick Begou
<Patrick.Begou@xxxxxxxxxxxxxxxxxxxx> wrote:
I get a strange problem with g++ 4.8. My server has gcc44-c++-4.4.1
installed.
I've installed gcc4.8 in my home from gcc-4.8-20130711.tar.gz
gcc-4.8-infrastructure.tar.gz.
PATH, LD_LIBRARY_PATH are setup to reach first this 4.8 install.
Initially I get the error runing the configure script to build OpenMPI, so I
extract the small peace of test code in "prog.C" file for testing and:
g++ -o conftest -DNDEBUG -finline-functions prog.C
Is working but:
g++ -o conftest -O3 -DNDEBUG -finline-functions prog.C
says:
In file included from /usr/include/stdio.h:909:0,
from prog.C:141:
/usr/include/bits/stdio.h: In function ‘__ssize_t getline(char**, size_t*,
FILE*)’:
/usr/include/bits/stdio.h:118:52: error: ‘__getdelim’ was not declared in
this scope
return __getdelim (__lineptr, __n, '\n', __stream);
Same behavior with -O2 or -O1.
g++ 4.8 works with -O0.
I've no idea about this problem. Thanks for your advices.
Using optimization changes how your library header files behave. Look
for #ifdef __OPTIMIZE__ or defined(__OPTIMIZE__). This looks like a
problem with your C library, not with GCC proper.
Ian
In http://gfortran.com/download/x86_64/PLEASE_README.txt the requirement for
glibc is :
"... The provided compilers need glibc 2.4 or newer, however the library libgomp
needs glibc 2.6...."
I am runing glibc-devel-2.11.3-12.59.1.x86_64
so my glibc level seams correct no ?
Patrick
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