AC_DEFUN(DEAL_II_THREAD_CPPFLAGS, dnl
[
AC_MSG_CHECKING(for platform specific multi-threading defines)
- AC_REQUIRE([AC_LANG_CPLUSPLUS])
+ AC_LANG_CPLUSPLUS
AC_TRY_COMPILE(
[
#if !defined (_REENTRANT) && !defined (_THREAD_SAFE)
dnl
AC_DEFUN(DEAL_II_CHECK_GETRUSAGE, dnl
AC_MSG_CHECKING(whether getrusage is properly declared)
- AC_REQUIRE([AC_LANG_CPLUSPLUS])
+ AC_LANG_CPLUSPLUS
AC_TRY_COMPILE(
[
#include <sys/resource.h>
dnl
AC_DEFUN(DEAL_II_CHECK_ISNAN_FLAG, dnl
AC_MSG_CHECKING(whether isnan is declared with $1 flags)
- AC_REQUIRE([AC_LANG_CPLUSPLUS])
+ AC_LANG_CPLUSPLUS
CXXFLAGS=$2
deal_II_isnan_flag=""
AC_TRY_COMPILE(
dnl
AC_DEFUN(DEAL_II_CHECK_ASSERT_THROW, dnl
AC_MSG_CHECKING(whether AssertThrow works with $1 flags)
- AC_REQUIRE([AC_LANG_CPLUSPLUS])
+ AC_LANG_CPLUSPLUS
CXXFLAGS=$2
AC_TRY_COMPILE(
[