patch cmake issue in scotch

Author: lkeegan

build.sh

@@ -648,6 +648,7 @@ cd ../../
 # Scotch (includes METIS compatibility library)
 git clone -b $SCOTCH_VERSION --depth 1 https://gitlab.inria.fr/scotch/scotch.git
 cd scotch
+git apply --ignore-space-change --ignore-whitespace --verbose ../scotch.diff
 mkdir build
 cd build
 cmake -GNinja .. \

scotch.diff

@@ -0,0 +1,14 @@
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 6c84b7b..07f7677 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -129,7 +129,8 @@ endif()
+ 
+ # Detect and remove GCC _FORTIFY_SOURCE
+ if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
+-  execute_process(COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} -E -Og -dM -x c ${dev_null} OUTPUT_VARIABLE gcc_macros)
++  separate_arguments(C_FLAGS_LIST UNIX_COMMAND "${CMAKE_C_FLAGS}")
++  execute_process(COMMAND ${CMAKE_C_COMPILER} ${C_FLAGS_LIST} -E -Og -dM -x c ${dev_null} OUTPUT_VARIABLE gcc_macros)
+   string(FIND ${gcc_macros} "_FORTIFY_SOURCE" fortify)
+   if(fortify GREATER -1)
+     message(WARNING "GCC _FORTIFY_SOURCE is known to cause problem with Scotch and has been disabled")