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c2f55635da
* sysdeps/alpha/elf/configure.in: Likewise.
* sysdeps/i386/elf/configure.in: Likewise.
* sysdeps/mach/hurd/configure.in: Likewise.
* sysdeps/x86_64/elf/configure.in: Likewise.
39 lines
996 B
Plaintext
39 lines
996 B
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/i386/elf.
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if test "$usetls" != no; then
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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 i386 TLS support, libc_cv_386_tls, [dnl
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cat > conftest.s <<\EOF
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.section ".tdata", "awT", @progbits
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.globl foo
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foo: .long 1
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.section ".tbss", "awT", @nobits
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.globl bar
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bar: .skip 4
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.text
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baz: leal bar@TLSLDM(%ebx), %eax
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leal bar@DTPOFF(%eax), %edx
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subl foo@GOTTPOFF(%edx), %eax
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subl $bar@TPOFF, %eax
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movl foo@GOTNTPOFF(%edx), %ecx
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movl %gs:(%ecx), %eax
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movl %gs:bar@NTPOFF, %eax
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EOF
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dnl
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if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_386_tls=yes
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else
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libc_cv_386_tls=no
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fi
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rm -f conftest*])
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if test $libc_cv_386_tls = yes; then
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AC_DEFINE(HAVE_TLS_SUPPORT)
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fi
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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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