From: Matthias Maier <tamiko@43-1.org>
Date: Thu, 17 Dec 2020 01:23:19 +0000 (-0600)
Subject: CMake: fix ENABLE_IF_LINKS
X-Git-Tag: v9.3.0-rc1~749^2~3
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55b95ce11690ec8d5a86aa535e160e8acc3dbf49;p=dealii.git

CMake: fix ENABLE_IF_LINKS
---

diff --git a/cmake/macros/macro_enable_if_links.cmake b/cmake/macros/macro_enable_if_links.cmake
index 1e024ca843..bfcbe31a96 100644
--- 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()