Messages in this thread | | | From | Segher Boessenkool <> | Subject | Re: [PATCH 0/7] gcov kernel support | Date | Fri, 23 May 2008 13:06:00 +0200 |
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>> This is version #2 of the gcov kernel support patch set > > powerpc blew up: > > /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/lib/ > gcc/powerpc64-unknown-linux-gnu/4.1.0/../../../../powerpc64-unknown- > linux-gnu/bin/ld: skipping incompatible > /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/lib/ > gcc/powerpc64-unknown-linux-gnu/4.1.0/./libgcov.a when searching for > -lgcov > /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/lib/ > gcc/powerpc64-unknown-linux-gnu/4.1.0/../../../../powerpc64-unknown- > linux-gnu/bin/ld: cannot find -lgcov > collect2: ld returned 1 exit status > make[2]: *** [arch/powerpc/kernel/vdso32/vdso32.so.dbg] Error 1 > make[1]: *** [arch/powerpc/kernel/vdso32] Error 2
Sounds like your toolchain was built without biarch support, but you're using it for the 32-bit parts of the kernel anyway. Which works as long as you're not using any libraries, but now you need libgcov.a .
What does
/opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/bin/ powerpc64-unknown-linux-gnu-gcc -v
say? (Or whatever the correct path to that compiler is, the directory structure is a bit unusual here it seems). There shouldn't be a --disable-biarch there.
Or, what does
find /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/4.1.0/ -name libgcov.a
say? (It should usually find three versions: 64-bit, 32-bit, 32-bit no float).
You *can* build with a non-biarch compiler, but then you need to point the kernel build system at a 32-bit toolchain to use for the 32-bit parts (via CROSS32_COMPILE).
Segher
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