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improve detection of gethostname(), localtime_r() and strstr()

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This commit is contained in:
Yang Tse
2008-09-17 08:14:28 +00:00
parent 638e3c070c
commit d7e406e020
3 changed files with 289 additions and 23 deletions
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284
m4/curl-functions.m4
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@@ -353,6 +353,91 @@ AC_DEFUN([CURL_CHECK_FUNC_FTRUNCATE], [
])
dnl CURL_CHECK_FUNC_GETHOSTNAME
dnl -------------------------------------------------
dnl Verify if gethostname is available, prototyped, and
dnl can be compiled. If all of these are true, and
dnl usage has not been previously disallowed with
dnl shell variable curl_disallow_gethostname, then
dnl HAVE_GETHOSTNAME will be defined.
AC_DEFUN([CURL_CHECK_FUNC_GETHOSTNAME], [
AC_REQUIRE([CURL_INCLUDES_UNISTD])dnl
#
tst_links_gethostname="unknown"
tst_proto_gethostname="unknown"
tst_compi_gethostname="unknown"
tst_allow_gethostname="unknown"
#
AC_MSG_CHECKING([if gethostname can be linked])
AC_LINK_IFELSE([
AC_LANG_FUNC_LINK_TRY([gethostname])
],[
AC_MSG_RESULT([yes])
tst_links_gethostname="yes"
],[
AC_MSG_RESULT([no])
tst_links_gethostname="no"
])
#
if test "$tst_links_gethostname" = "yes"; then
AC_MSG_CHECKING([if gethostname is prototyped])
AC_EGREP_CPP([gethostname],[
$curl_includes_unistd
],[
AC_MSG_RESULT([yes])
tst_proto_gethostname="yes"
],[
AC_MSG_RESULT([no])
tst_proto_gethostname="no"
])
fi
#
if test "$tst_proto_gethostname" = "yes"; then
AC_MSG_CHECKING([if gethostname is compilable])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_unistd
]],[[
if(0 != gethostname(0, 0))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_compi_gethostname="yes"
],[
AC_MSG_RESULT([no])
tst_compi_gethostname="no"
])
fi
#
if test "$tst_compi_gethostname" = "yes"; then
AC_MSG_CHECKING([if gethostname usage allowed])
if test "x$curl_disallow_gethostname" != "xyes"; then
AC_MSG_RESULT([yes])
tst_allow_gethostname="yes"
else
AC_MSG_RESULT([no])
tst_allow_gethostname="no"
fi
fi
#
AC_MSG_CHECKING([if gethostname might be used])
if test "$tst_links_gethostname" = "yes" &&
test "$tst_proto_gethostname" = "yes" &&
test "$tst_compi_gethostname" = "yes" &&
test "$tst_allow_gethostname" = "yes"; then
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(HAVE_GETHOSTNAME, 1,
[Define to 1 if you have the gethostname function.])
ac_cv_func_gethostname="yes"
else
AC_MSG_RESULT([no])
ac_cv_func_gethostname="no"
fi
])
dnl CURL_CHECK_FUNC_GMTIME_R
dnl -------------------------------------------------
dnl Verify if gmtime_r is available, prototyped, can
@@ -467,6 +552,120 @@ AC_DEFUN([CURL_CHECK_FUNC_GMTIME_R], [
])
dnl CURL_CHECK_FUNC_LOCALTIME_R
dnl -------------------------------------------------
dnl Verify if localtime_r is available, prototyped, can
dnl be compiled and seems to work. If all of these are
dnl true, and usage has not been previously disallowed
dnl with shell variable curl_disallow_localtime_r, then
dnl HAVE_LOCALTIME_R will be defined.
AC_DEFUN([CURL_CHECK_FUNC_LOCALTIME_R], [
AC_REQUIRE([CURL_INCLUDES_TIME])dnl
#
tst_links_localtime_r="unknown"
tst_proto_localtime_r="unknown"
tst_compi_localtime_r="unknown"
tst_works_localtime_r="unknown"
tst_allow_localtime_r="unknown"
#
AC_MSG_CHECKING([if localtime_r can be linked])
AC_LINK_IFELSE([
AC_LANG_FUNC_LINK_TRY([localtime_r])
],[
AC_MSG_RESULT([yes])
tst_links_localtime_r="yes"
],[
AC_MSG_RESULT([no])
tst_links_localtime_r="no"
])
#
if test "$tst_links_localtime_r" = "yes"; then
AC_MSG_CHECKING([if localtime_r is prototyped])
AC_EGREP_CPP([localtime_r],[
$curl_includes_time
],[
AC_MSG_RESULT([yes])
tst_proto_localtime_r="yes"
],[
AC_MSG_RESULT([no])
tst_proto_localtime_r="no"
])
fi
#
if test "$tst_proto_localtime_r" = "yes"; then
AC_MSG_CHECKING([if localtime_r is compilable])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_time
]],[[
if(0 != localtime_r(0, 0))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_compi_localtime_r="yes"
],[
AC_MSG_RESULT([no])
tst_compi_localtime_r="no"
])
fi
#
dnl only do runtime verification when not cross-compiling
if test "x$cross_compiling" != "xyes" &&
test "$tst_compi_localtime_r" = "yes"; then
AC_MSG_CHECKING([if localtime_r seems to work])
AC_RUN_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_time
]],[[
time_t clock = 1170352587;
struct tm *tmp = 0;
struct tm result;
tmp = localtime_r(&clock, &result);
if(tmp)
exit(0);
else
exit(1);
]])
],[
AC_MSG_RESULT([yes])
tst_works_localtime_r="yes"
],[
AC_MSG_RESULT([no])
tst_works_localtime_r="no"
])
fi
#
if test "$tst_compi_localtime_r" = "yes" &&
test "$tst_works_localtime_r" != "no"; then
AC_MSG_CHECKING([if localtime_r usage allowed])
if test "x$curl_disallow_localtime_r" != "xyes"; then
AC_MSG_RESULT([yes])
tst_allow_localtime_r="yes"
else
AC_MSG_RESULT([no])
tst_allow_localtime_r="no"
fi
fi
#
AC_MSG_CHECKING([if localtime_r might be used])
if test "$tst_links_localtime_r" = "yes" &&
test "$tst_proto_localtime_r" = "yes" &&
test "$tst_compi_localtime_r" = "yes" &&
test "$tst_allow_localtime_r" = "yes" &&
test "$tst_works_localtime_r" != "no"; then
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(HAVE_LOCALTIME_R, 1,
[Define to 1 if you have a working localtime_r function.])
ac_cv_func_localtime_r="yes"
else
AC_MSG_RESULT([no])
ac_cv_func_localtime_r="no"
fi
])
dnl CURL_CHECK_FUNC_SIGACTION
dnl -------------------------------------------------
dnl Verify if sigaction is available, prototyped, and
@@ -1573,6 +1772,91 @@ AC_DEFUN([CURL_CHECK_FUNC_STRNICMP], [
])
dnl CURL_CHECK_FUNC_STRSTR
dnl -------------------------------------------------
dnl Verify if strstr is available, prototyped, and
dnl can be compiled. If all of these are true, and
dnl usage has not been previously disallowed with
dnl shell variable curl_disallow_strstr, then
dnl HAVE_STRSTR will be defined.
AC_DEFUN([CURL_CHECK_FUNC_STRSTR], [
AC_REQUIRE([CURL_INCLUDES_STRING])dnl
#
tst_links_strstr="unknown"
tst_proto_strstr="unknown"
tst_compi_strstr="unknown"
tst_allow_strstr="unknown"
#
AC_MSG_CHECKING([if strstr can be linked])
AC_LINK_IFELSE([
AC_LANG_FUNC_LINK_TRY([strstr])
],[
AC_MSG_RESULT([yes])
tst_links_strstr="yes"
],[
AC_MSG_RESULT([no])
tst_links_strstr="no"
])
#
if test "$tst_links_strstr" = "yes"; then
AC_MSG_CHECKING([if strstr is prototyped])
AC_EGREP_CPP([strstr],[
$curl_includes_string
],[
AC_MSG_RESULT([yes])
tst_proto_strstr="yes"
],[
AC_MSG_RESULT([no])
tst_proto_strstr="no"
])
fi
#
if test "$tst_proto_strstr" = "yes"; then
AC_MSG_CHECKING([if strstr is compilable])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$curl_includes_string
]],[[
if(0 != strstr(0, 0))
return 1;
]])
],[
AC_MSG_RESULT([yes])
tst_compi_strstr="yes"
],[
AC_MSG_RESULT([no])
tst_compi_strstr="no"
])
fi
#
if test "$tst_compi_strstr" = "yes"; then
AC_MSG_CHECKING([if strstr usage allowed])
if test "x$curl_disallow_strstr" != "xyes"; then
AC_MSG_RESULT([yes])
tst_allow_strstr="yes"
else
AC_MSG_RESULT([no])
tst_allow_strstr="no"
fi
fi
#
AC_MSG_CHECKING([if strstr might be used])
if test "$tst_links_strstr" = "yes" &&
test "$tst_proto_strstr" = "yes" &&
test "$tst_compi_strstr" = "yes" &&
test "$tst_allow_strstr" = "yes"; then
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(HAVE_STRSTR, 1,
[Define to 1 if you have the strstr function.])
ac_cv_func_strstr="yes"
else
AC_MSG_RESULT([no])
ac_cv_func_strstr="no"
fi
])
dnl CURL_CHECK_FUNC_STRTOK_R
dnl -------------------------------------------------
dnl Verify if strtok_r is available, prototyped, and