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2003-07-14 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/configure.in: Require CFI directives also for ppc and s390.
44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
dnl configure fragment for new libpthread implementation.
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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if test "x$libc_cv_gcc___thread" != xyes; then
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AC_MSG_ERROR(compiler support for __thread is required)
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fi
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if test "x$libc_cv_asm_cfi_directives" != xyes; then
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dnl We need this only for some architectures.
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case "$base_machine" in
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i386 | x86_64 | powerpc | s390)
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AC_MSG_ERROR(CFI directive support in assembler is required) ;;
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*) ;;
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esac
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fi
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dnl Iff <unwind.h> is available, make sure it is the right one and it
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dnl contains struct _Unwind_Exception.
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AC_CACHE_CHECK(dnl
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for forced unwind support, libc_cv_forced_unwind, [dnl
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AC_TRY_LINK([#include <unwind.h>], [
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struct _Unwind_Exception exc;
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struct _Unwind_Context *context;
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_Unwind_GetCFA (context)],
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libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)])
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if test $libc_cv_forced_unwind = yes; then
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AC_DEFINE(HAVE_FORCED_UNWIND)
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dnl Check for C cleanup handling.
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old_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror -fexceptions"
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AC_CACHE_CHECK([for C cleanup handling], libc_cv_c_cleanup, [dnl
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AC_TRY_LINK([
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#include <stdio.h>
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void cl (void *a) { }
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extern c (void);], [
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int a __attribute__ ((cleanup (cl)));
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puts ("test")],
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libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)])
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CFLAGS="$old_CFLAGS"
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if test $libc_cv_c_cleanup = no; then
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AC_MSG_ERROR([the compiler must support C cleanup handling])
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fi
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fi
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