CMake: fix ENABLE_IF_LINKS

diff --git a/cmake/macros/macro_enable_if_links.cmake b/cmake/macros/macro_enable_if_links.cmake
index 1e024ca8432ed2ce581bce57098f9aa347825c69..bfcbe31a968d57d7f260d35e016ae73564088ac8 100644 (file)
--- a/cmake/macros/macro_enable_if_links.cmake
+++ b/cmake/macros/macro_enable_if_links.cmake
@@ -24,20 +24,17 @@
 
 MACRO(ENABLE_IF_LINKS _variable _flag)
   STRING(STRIP "${_flag}" _flag_stripped)
+
   IF(NOT "${_flag_stripped}" STREQUAL "")
     STRING(REGEX REPLACE "^-" "" _flag_name "${_flag_stripped}")
-    STRING(REPLACE "," "" _flag_name "${_flag_name}")
-    STRING(REPLACE "-" "_" _flag_name "${_flag_name}")
-    STRING(REPLACE "+" "_" _flag_name "${_flag_name}")
+    STRING(REGEX REPLACE "\[-+,\]" "_" _flag_name "${_flag_name}")
+
     SET(_backup ${CMAKE_REQUIRED_LIBRARIES})
     LIST(APPEND CMAKE_REQUIRED_LIBRARIES "${_flag_stripped}")
-    CHECK_CXX_COMPILER_FLAG(
-      ""
-      DEAL_II_HAVE_FLAG_${_flag_name}
-      )
+    CHECK_CXX_SOURCE_COMPILES("int main(){}" DEAL_II_HAVE_LINKER_FLAG_${_flag_name})
     SET(CMAKE_REQUIRED_LIBRARIES ${_backup})
 
-    IF(DEAL_II_HAVE_FLAG_${_flag_name})
+    IF(DEAL_II_HAVE_LINKER_FLAG_${_flag_name})
       SET(${_variable} "${${_variable}} ${_flag_stripped}")
       STRING(STRIP "${${_variable}}" ${_variable})
     ENDIF()