commit 175931bccd2ee9b58b19f92b7f3ca38bba765621
Author:     Albrecht Schlosser <albrechts.fltk@online.de>
AuthorDate: Wed May 1 16:07:58 2024 +0200
Commit:     Albrecht Schlosser <albrechts.fltk@online.de>
CommitDate: Wed May 1 16:07:58 2024 +0200

    CMake: simplify compiler detection for '-Wshadow' test

 test/CMakeLists.txt | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git test/CMakeLists.txt test/CMakeLists.txt
index 05d090f..692730d 100644
--- test/CMakeLists.txt
+++ test/CMakeLists.txt
@@ -234,10 +234,8 @@ endif(OPENGL_FOUND)
 #   Its sole purpose is to issue compilation warnings during build time if
 #   variables are shadowed in public headers.
 
-fl_debug_var(CMAKE_CXX_COMPILER_ID)
-if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR
-   CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR
-   CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+set(_compilers GNU Clang AppleClang)
+if(CMAKE_CXX_COMPILER_ID IN_LIST _compilers)
 
   set(include_all "${CMAKE_CURRENT_BINARY_DIR}/include_all.h")
   file(WRITE ${include_all} "/* DO NOT EDIT - this file is created by CMake */\n")
@@ -259,6 +257,7 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR
   set_target_properties(shadow_variables PROPERTIES COMPILE_FLAGS -Wshadow)
 
 endif() # GNU or Clang (-Wshadow test)
+unset(_compilers)
 
 
 # *** EXPERIMENTAL ***