Chris Lu wrote:
I am trying to build gcc 4.0.2 on a x86_64 system with 32-bit support. Apparently it will not configure libstdc++ for a 32-bit build properly (generates Makefile with no 'all' target) and the error from running config.status manually is: checking for sin in -lm... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
You didn't tell your "x86_64 system" type but let's guess it being Linux, not FreeBSD, NetBSD or something else... Just (pre)install the 32-bit C libraries, they should be in '/lib' and '/usr/lib' in the Linux case. The default 64-bit libs then are normally in '/lib64' and '/usr/lib64'. And you can always preinstall only the 'gcc' components from the '$build/gcc' directory via 'make install-gcc' and then try compiling and linking a "Hello World" using '-m32', to see if creating 32-bit executables will succeed. If not, try to fix the problem before going to configure libiberty and libstdc++... If you cannot invent the fix, just tell what errors you will get during the "Hello World" linking and let people to guess the problem. Using the '-Wl,-verbose' in the GCC command line, giving '-verbose' to the GNU linker, could also help a lot...
