68 lines
1.9 KiB
Plaintext
68 lines
1.9 KiB
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/ia64.
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AC_CACHE_CHECK(if -g produces usable source locations for assembler-with-cpp,
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libc_cv_cpp_asm_debuginfo, [dnl
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cat > conftest.S <<EOF
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#include "confdefs.h"
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/* comment on
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two lines */
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${libc_cv_dot_text}
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${libc_cv_asm_global_directive} foo
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foo:
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/* Unfortunately this test only works for a real instruction,
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not for any of the machine-independent pseudo-ops.
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So we just have to assume everybody has a "nop". */
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nop.b 0;;
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/* comment */
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nop.b 0;;
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/* comment */
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nop.b 0;;
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EOF
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if AC_TRY_COMMAND([${CC-cc} $CPPFLAGS $ASFLAGS -g -c conftest.S 1>&AS_MESSAGE_LOG_FD]) && {
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ac_pattern='conftest\.S'
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AC_TRY_COMMAND([readelf --debug-dump=line conftest.o |
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grep $ac_pattern 1>&AS_MESSAGE_LOG_FD])
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}; then
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libc_cv_cpp_asm_debuginfo=yes
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else
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libc_cv_cpp_asm_debuginfo=no
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fi
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rm -f conftest*])AC_SUBST(libc_cv_cpp_asm_debuginfo)
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if test $libc_cv_cpp_asm_debuginfo = yes; then
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AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO)
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fi
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# Check for support of thread-local storage handling in assembler and
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# linker.
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AC_CACHE_CHECK(for ia64 TLS support, libc_cv_ia64_tls, [dnl
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cat > conftest.s <<\EOF
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.section ".tdata","awT",@progbits
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foo: data8 25
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.text
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addl r16 = @ltoff(@dtpmod(foo#)), gp
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addl r17 = @ltoff(@dtprel(foo#)), gp
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addl r18 = @ltoff(@tprel(foo#)), gp
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addl r19 = @dtprel(foo#), gp
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adds r21 = @dtprel(foo#), r13
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movl r23 = @dtprel(foo#)
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addl r20 = @tprel(foo#), gp
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adds r22 = @tprel(foo#), r13
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movl r24 = @tprel(foo#)
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EOF
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dnl
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if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_ia64_tls=yes
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else
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libc_cv_ia64_tls=no
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fi
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rm -f conftest*])
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if test $libc_cv_ia64_tls = no; then
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AC_MSG_ERROR([the assembler must support TLS])
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fi
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dnl It is always possible to access static and hidden symbols in an
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dnl position independent way.
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AC_DEFINE(PI_STATIC_AND_HIDDEN)
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