mdbx-cmake: add remove_flag and remove_compile_flag macros.

erthink · Mar 28, 2022 · 57978b0 · 57978b0
1 parent eb532b8
commit 57978b0
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/cmake/utils.cmake b/cmake/utils.cmake
@@ -36,6 +36,23 @@ macro(add_compile_flags languages)
   unset(_flags)
 endmacro(add_compile_flags)
 
+macro(remove_flag varname flag)
+  string(REGEX REPLACE "^(.*)( ${flag} )(.*)$" "\\1 \\3" ${varname} ${${varname}})
+  string(REGEX REPLACE "^((.+ )*)(${flag})(( .+)*)$" "\\1\\4" ${varname} ${${varname}})
+endmacro(remove_flag)
+
+macro(remove_compile_flag languages flag)
+  foreach(_lang ${languages})
+    if(CMAKE_CXX_COMPILER_LOADED AND _lang STREQUAL "CXX")
+      remove_flag(${_lang}_FLAGS ${flag})
+    endif()
+    if(CMAKE_C_COMPILER_LOADED AND _lang STREQUAL "C")
+      remove_flag(${_lang}_FLAGS ${flag})
+    endif()
+  endforeach()
+  unset(_lang)
+endmacro(remove_compile_flag)
+
 macro(set_source_files_compile_flags)
   foreach(file ${ARGN})
     get_filename_component(_file_ext ${file} EXT)