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(LIBUNWIND__THREAD): New test.

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(Logical change 1.22)
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mostang.com!davidm 2002-11-09 07:59:02 +00:00
parent 193ba2859f
commit 56c93299f0
1 changed files with 26 additions and 7 deletions
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33
aclocal.m4 vendored
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@ -946,7 +946,7 @@ AC_DEFUN([AM_CONFIG_HEADER],
m4_ifndef([_AM_Config_Header_Index], m4_define([_AM_Config_Header_Index], [0])) m4_ifndef([_AM_Config_Header_Index], m4_define([_AM_Config_Header_Index], [0]))
dnl prepare to store our destination file list for use in config.status dnl prepare to store our destination file list for use in config.status
AC_FOREACH([_AM_File], [$1], AC_FOREACH([_AM_File], [$1],
[m4_pushdef([_AM_Dest], m4_patsubst(_AM_File, [:.*])) [m4_pushdef([_AM_Dest], patsubst(_AM_File, [:.*]))
m4_define([_AM_Config_Header_Index], m4_incr(_AM_Config_Header_Index)) m4_define([_AM_Config_Header_Index], m4_incr(_AM_Config_Header_Index))
dnl and add it to the list of files AC keeps track of, along dnl and add it to the list of files AC keeps track of, along
dnl with our hook dnl with our hook
@ -987,12 +987,31 @@ done])
# ----------------- # -----------------
# Like AS_DIRNAME, only do it during macro expansion # Like AS_DIRNAME, only do it during macro expansion
AC_DEFUN([_AM_DIRNAME], AC_DEFUN([_AM_DIRNAME],
[m4_if(m4_regexp([$1], [^.*[^/]//*[^/][^/]*/*$]), -1, [m4_if(regexp([$1], [^.*[^/]//*[^/][^/]*/*$]), -1,
m4_if(m4_regexp([$1], [^//\([^/]\|$\)]), -1, m4_if(regexp([$1], [^//\([^/]\|$\)]), -1,
m4_if(m4_regexp([$1], [^/.*]), -1, m4_if(regexp([$1], [^/.*]), -1,
[.], [.],
m4_patsubst([$1], [^\(/\).*], [\1])), patsubst([$1], [^\(/\).*], [\1])),
m4_patsubst([$1], [^\(//\)\([^/].*\|$\)], [\1])), patsubst([$1], [^\(//\)\([^/].*\|$\)], [\1])),
m4_patsubst([$1], [^\(.*[^/]\)//*[^/][^/]*/*$], [\1]))[]dnl patsubst([$1], [^\(.*[^/]\)//*[^/][^/]*/*$], [\1]))[]dnl
]) # _AM_DIRNAME ]) # _AM_DIRNAME
AC_DEFUN([LIBUNWIND___THREAD],
[dnl Check whether the compiler supports the __thread keyword.
if test "x$use__thread" != xno; then
AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread,
[cat > conftest.c <<\EOF
__thread int a = 42;
EOF
if AC_TRY_COMMAND([${CC-cc} $CFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then
libc_cv_gcc___thread=yes
else
libc_cv_gcc___thread=no
fi
rm -f conftest*])
if test "$libc_cv_gcc___thread" = yes; then
AC_DEFINE(HAVE___THREAD)
fi
else
libc_cv_gcc___thread=no
fi])