http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60425
--- Comment #2 from j-frankish at slb dot com ---
Ah - I see the problem now.
I'm using gcc packaged into a squashfs package, loop mounted at /tmp/tcloop/gcc
and symlinked to the root file system. The gcc libs are packaged separately and
mounted at /tmp/tcloop/gcc_libs.
As -fopenmp is searching a relative path to libgomp.spec and only looks in
absolute paths to /lib and /usr/lib, it does not find it.
I entered the absolute path /usr/local/lib/libgomp.spec in the root file system
in the specs file, which is what made things work.
..in some respects, if gcc is compiled to /usr/local, shouldn't it search the
absolute path to /usr/local?
----------
$ strace gcc hello.c -fopenmp 2>&1 | grep libgomp.spec
strace gcc hello.c -fopenmp 2>&1 | grep libgomp.spec
access("/tmp/tcloop/gcc/usr/local/bin/../lib/gcc/i486-pc-linux-gnu/4.7.2/libgomp.spec",
R_OK) = -1 ENOENT (No such file or directory)
access("/tmp/tcloop/gcc/usr/local/bin/../lib/gcc/libgomp.spec", R_OK) = -1
ENOENT (No such file or directory)
access("/tmp/tcloop/gcc/usr/local/bin/../lib/gcc/i486-pc-linux-gnu/4.7.2/../../../../i486-pc-linux-gnu/lib/i486-pc-linux-gnu/4.7.2/libgomp.spec",
R_OK) = -1 ENOENT (No such file or directory)
access("/tmp/tcloop/gcc/usr/local/bin/../lib/gcc/i486-pc-linux-gnu/4.7.2/../../../../i486-pc-linux-gnu/lib/libgomp.spec",
R_OK) = -1 ENOENT (No such file or directory)
access("/tmp/tcloop/gcc/usr/local/bin/../lib/gcc/i486-pc-linux-gnu/4.7.2/../../../i486-pc-linux-gnu/4.7.2/libgomp.spec",
R_OK) = -1 ENOENT (No such file or directory)
access("/tmp/tcloop/gcc/usr/local/bin/../lib/gcc/i486-pc-linux-gnu/4.7.2/../../../libgomp.spec",
R_OK) = -1 ENOENT (No such file or directory)
access("/lib/i486-pc-linux-gnu/4.7.2/libgomp.spec", R_OK) = -1 ENOENT (No such
file or directory)
access("/lib/libgomp.spec", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/lib/i486-pc-linux-gnu/4.7.2/libgomp.spec", R_OK) = -1 ENOENT (No
such file or directory)
access("/usr/lib/libgomp.spec", R_OK) = -1 ENOENT (No such file or directory)
open("libgomp.spec", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
write(2, "gcc: error: libgomp.spec: No suc"..., 51gcc: error: libgomp.spec: No
such file or directory) = 51
