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Code Issues Releases Wiki Activity

improve detection of strerror_r()

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This commit is contained in:
Yang Tse 2008-09-12 07:38:44 +00:00
parent 6d233becf0
commit 624b5f228b
1 changed files with 65 additions and 40 deletions
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105
m4/curl-functions.m4
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@ -22,7 +22,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
# serial 6
# serial 7
dnl CURL_INCLUDES_SIGNAL
@ -622,7 +622,8 @@ dnl -------------------------------------------------
dnl Verify if strerror_r is available, prototyped, can be compiled and
dnl seems to work. If all of these are true, and usage has not been
dnl previously disallowed with shell variable curl_disallow_strerror_r,
dnl then HAVE_GLIBC_STRERROR_R or HAVE_POSIX_STRERROR_R will be defined.
dnl then HAVE_STRERROR_R and STRERROR_R_TYPE_ARG3 will be defined, as
dnl well as one of HAVE_GLIBC_STRERROR_R or HAVE_POSIX_STRERROR_R.
dnl
dnl glibc-style strerror_r:
dnl
@ -651,6 +652,8 @@ AC_DEFUN([CURL_CHECK_FUNC_STRERROR_R], [
tst_allow_strerror_r="unknown"
tst_works_glibc_strerror_r="unknown"
tst_works_posix_strerror_r="unknown"
tst_glibc_strerror_r_type_arg3="unknown"
tst_posix_strerror_r_type_arg3="unknown"
#
AC_MSG_CHECKING([if strerror_r can be linked])
AC_LINK_IFELSE([
@ -696,25 +699,32 @@ AC_DEFUN([CURL_CHECK_FUNC_STRERROR_R], [
#
if test "$tst_compi_strerror_r" = "yes"; then
AC_MSG_CHECKING([if strerror_r is glibc like])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_string
]],[[
char *strerror_r(int errnum, char *workbuf, size_t bufsize);
if(0 != strerror_r(0, 0, 0))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_glibc_strerror_r="yes"
],[
AC_MSG_RESULT([no])
tst_glibc_strerror_r="no"
dnl temporary debug tracing follows
echo " " >&6
sed 's/^/cc-fail> /' conftest.err >&6
echo " " >&6
])
tst_glibc_strerror_r_type_arg3="unknown"
for arg3 in 'size_t' 'int'; do
if test "$tst_glibc_strerror_r_type_arg3" = "unknown"; then
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_string
]],[[
char *strerror_r(int errnum, char *workbuf, $arg3 bufsize);
if(0 != strerror_r(0, 0, 0))
return 1;
]])
],[
tst_glibc_strerror_r_type_arg3="$arg3"
])
fi
done
case "$tst_glibc_strerror_r_type_arg3" in
unknown)
AC_MSG_RESULT([no])
tst_glibc_strerror_r="no"
;;
*)
AC_MSG_RESULT([yes])
tst_glibc_strerror_r="yes"
;;
esac
fi
#
dnl only do runtime verification when not cross-compiling
@ -749,25 +759,32 @@ AC_DEFUN([CURL_CHECK_FUNC_STRERROR_R], [
if test "$tst_compi_strerror_r" = "yes" &&
test "$tst_works_glibc_strerror_r" != "yes"; then
AC_MSG_CHECKING([if strerror_r is POSIX like])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_string
]],[[
int strerror_r(int errnum, char *resultbuf, size_t bufsize);
if(0 != strerror_r(0, 0, 0))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_posix_strerror_r="yes"
],[
AC_MSG_RESULT([no])
tst_posix_strerror_r="no"
dnl temporary debug tracing follows
echo " " >&6
sed 's/^/cc-fail> /' conftest.err >&6
echo " " >&6
])
tst_posix_strerror_r_type_arg3="unknown"
for arg3 in 'size_t' 'int'; do
if test "$tst_posix_strerror_r_type_arg3" = "unknown"; then
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_string
]],[[
int strerror_r(int errnum, char *resultbuf, $arg3 bufsize);
if(0 != strerror_r(0, 0, 0))
return 1;
]])
],[
tst_posix_strerror_r_type_arg3="$arg3"
])
fi
done
case "$tst_posix_strerror_r_type_arg3" in
unknown)
AC_MSG_RESULT([no])
tst_posix_strerror_r="no"
;;
*)
AC_MSG_RESULT([yes])
tst_posix_strerror_r="yes"
;;
esac
fi
#
dnl only do runtime verification when not cross-compiling
@ -827,12 +844,20 @@ AC_DEFUN([CURL_CHECK_FUNC_STRERROR_R], [
test "$tst_allow_strerror_r" = "yes"; then
AC_MSG_RESULT([yes])
if test "$tst_glibc_strerror_r" = "yes"; then
AC_DEFINE_UNQUOTED(HAVE_STRERROR_R, 1,
[Define to 1 if you have the strerror_r function.])
AC_DEFINE_UNQUOTED(HAVE_GLIBC_STRERROR_R, 1,
[Define to 1 if you have a working glibc-style strerror_r function.])
AC_DEFINE_UNQUOTED(STRERROR_R_TYPE_ARG3, $tst_glibc_strerror_r_type_arg3,
[Define to the type of arg 3 for strerror_r.])
fi
if test "$tst_posix_strerror_r" = "yes"; then
AC_DEFINE_UNQUOTED(HAVE_STRERROR_R, 1,
[Define to 1 if you have the strerror_r function.])
AC_DEFINE_UNQUOTED(HAVE_POSIX_STRERROR_R, 1,
[Define to 1 if you have a working POSIX-style strerror_r function.])
AC_DEFINE_UNQUOTED(STRERROR_R_TYPE_ARG3, $tst_posix_strerror_r_type_arg3,
[Define to the type of arg 3 for strerror_r.])
fi
ac_cv_func_strerror_r="yes"
else