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33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/powerpc/powerpc32.
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# See whether gas has R_PPC_REL16 relocs.
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AC_CACHE_CHECK(for R_PPC_REL16 gas support, libc_cv_ppc_rel16, [dnl
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cat > conftest.s <<\EOF
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.text
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addis 11,30,_GLOBAL_OFFSET_TABLE_-.@ha
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EOF
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if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_ppc_rel16=yes
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else
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libc_cv_ppc_rel16=no
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fi
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rm -f conftest*])
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if test $libc_cv_ppc_rel16 = no; then
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AC_MSG_ERROR(R_PPC_REL16 is not supported. Binutils is too old.)
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fi
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# See whether GCC uses -msecure-plt.
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AC_CACHE_CHECK(for -msecure-plt by default, libc_cv_ppc_secure_plt, [dnl
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echo 'int foo (void) { extern int bar; return bar; }' > conftest.c
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libc_cv_ppc_secure_plt=no
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if AC_TRY_COMMAND(${CC-cc} -S $CFLAGS conftest.c -fpic -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
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if grep '_GLOBAL_OFFSET_TABLE_-.*@ha' conftest.s > /dev/null 2>&1; then
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libc_cv_ppc_secure_plt=yes
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fi
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fi
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rm -rf conftest*])
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if test $libc_cv_ppc_secure_plt = yes; then
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AC_DEFINE(HAVE_PPC_SECURE_PLT)
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fi
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