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Added caching of results to SAH_CHECK_NAMESPACES and SAH_FUNCS_IN_NAMESPACE 

svn path=/trunk/boinc/; revision=6052
This commit is contained in:
Eric J. Korpela 2005-05-06 00:31:05 +00:00
parent 0a160f469e
commit 8cbda5c1fa
1 changed files with 38 additions and 21 deletions
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59
m4/sah_namespace.m4
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@ -5,6 +5,9 @@
#
# Revision Log:
# $Log$
# Revision 1.2 2005/05/06 00:31:05 korpela
# Added caching of results to SAH_CHECK_NAMESPACES and SAH_FUNCS_IN_NAMESPACE
#
# Revision 1.1 2003/12/11 18:38:24 korpela
# Added checked macro files into boinc
#
@ -26,19 +29,23 @@ AC_DEFUN([SAH_NS_TO_DEFN],[
AC_DEFUN([SAH_CHECK_NAMESPACES],[
AC_LANG_PUSH(C++)
AC_MSG_CHECKING(for C++ namespaces)
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([
#define CONFIG_TEST
namespace foo {
int foo(void) { return(0); }
}
],[
return foo::foo();
])
], [AC_DEFINE(HAVE_NAMESPACES,[1],[Define if your C++ compiler supports namespaces]) sah_cv_have_namespaces="yes"], [sah_cv_have_namespaces="no"])
AC_MSG_RESULT($sah_cv_have_namespaces)
AC_LANG_POP
AC_CACHE_CHECK([for C++ namespaces],
[sah_cv_have_namespaces],[
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([
#define CONFIG_TEST
namespace foo {
int foo(void) { return(0); }
}
],[
return foo::foo();
])
], [sah_cv_have_namespaces="yes"], [sah_cv_have_namespaces="no"])
])
if test "${sah_cv_have_namespaces}" = "yes" ; then
AC_DEFINE(HAVE_NAMESPACES,[1],[Define if your C++ compiler supports namespaces])
fi
AC_LANG_POP(C++)
])
AC_DEFUN([SAH_FUNCS_IN_NAMESPACE],[
@ -47,11 +54,12 @@ AC_DEFUN([SAH_FUNCS_IN_NAMESPACE],[
do
func_name=m4_quote($func_name)
t_ns=m4_quote($2)
AC_MSG_CHECKING([$func_name in namespace $t_ns])
SAH_LC_TO_DEFN(ac_func_upper,[$func_name])
SAH_LC_TO_DEFN(ac_namespace_upper,[$t_ns])
ac_uc_defn=`echo HAVE_"$ac_namespace_upper"_$ac_func_upper`
AC_LINK_IFELSE(
AC_CACHE_CHECK([for $func_name in namespace $t_ns],
[sah_cv_func_$2_$ac_func_upper],[
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
#define CONFIG_TEST
$sah_cxx_includes
@ -59,13 +67,22 @@ AC_DEFUN([SAH_FUNCS_IN_NAMESPACE],[
[[
$2::$func_name ;
]])],
[AC_DEFINE_UNQUOTED([$ac_uc_defn], [1],
["Define to 1 if $func_name is in namespace $t_ns::" ] ) tmp_res=yes],
[tmp_res=no])
eval sah_cv_func_$2_$ac_func_upper=$tmp_res
AC_MSG_RESULT($tmp_res)
[
eval sah_cv_func_$2_$ac_func_upper="yes"
tmp_res="yes"
],
[
eval sah_cv_func_$2_$ac_func_upper="no"
tmp_res="no"
]
)
])
if test "${tmp_res}" = "yes" ; then
AC_DEFINE_UNQUOTED([$ac_uc_defn], [1],
["Define to 1 if $func_name is in namespace $t_ns::" ])
fi
done
AC_LANG_POP
AC_LANG_POP(C++)
])