See http://gcc.gnu.org/PR11903 Patch to fix following test case failure: === libstdc++-v3 tests === FAIL: thread/pthread1.cc (test for excess errors) Excess errors: /opt/cegl-2.0/sh4-unknown-linux-gnu/gcc-ss-3_3-20030714-glibc-2.2.5/sh4-unknown-linux-gnu/bin/ld: cannot find -lthread collect2: ld returned 1 exit status Note that *any* program compiled with -pthread fails: /opt/cegl-2.0/sh4-unknown-linux-gnu/gcc-ss-3_3-20030714-glibc-2.2.5/bin/sh4-unknown-linux-gnu-gcc hello.c -pthread /opt/cegl-2.0/sh4-unknown-linux-gnu/gcc-ss-3_3-20030714-glibc-2.2.5/lib/gcc-lib/sh4-unknown-linux-gnu/3.3.1/../../../../sh4-unknown-linux-gnu/bin/ld: cannot find -lthread collect2: ld returned 1 exit status Compiling with -lpthread on the other hand works fine: /opt/cegl-2.0/sh4-unknown-linux-gnu/gcc-ss-3_3-20030714-glibc-2.2.5/bin/sh4-unknown-linux-gnu-gcc hello.c -lpthread So -pthread is broken in some trivial way; it should invoke -lpthread, not -lthread, at least when targeting Linux. http://www.sh-linux.org/rpm-2003/SRPMS/gcc-3.2.3-3.src.rpm contains a jumbo patch, gcc-20030210-sh-linux-1.patch, that includes a fix for this. Here's the appropriate hunk (brings in a fix for the documented -mieee option). No idea if this fix is completely right, but it works for me... - dank@kegel.com 20 Jul 2003 Index: linux.h =================================================================== RCS file: /cvsroot/gcc/gcc/gcc/config/sh/linux.h,v retrieving revision 1.9.20.1 diff -u -d -u -r1.9.20.1 linux.h --- gcc-ss-3_3-20030714/gcc/config/sh/linux.h.old 6 Jun 2003 02:30:59 -0000 1.9.20.1 +++ gcc-ss-3_3-20030714/gcc/config/sh/linux.h 20 Jul 2003 23:36:50 -0000 @@ -59,7 +59,7 @@ #undef LIB_SPEC #define LIB_SPEC \ "%{shared: -lc} \ - %{!shared: %{pthread:-lthread} \ + %{!shared: %{mieee:-lieee} %{pthread:-lpthread} \ %{profile:-lc_p} %{!profile: -lc}}" #undef STARTFILE_SPEC