math.h does not always provide M_PI

This fixes the following error when building with SDL_LIBC: SDL\test\testautomation_math.c(1965): error C2065: 'M_PI': undeclared identifier
2022-07-27 15:05:41 +02:00 · 2022-07-27 15:05:41 +02:00 · 02c8747176
parent 5da85376b9
commit 02c8747176
1 changed files with 1 additions and 1 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -929,7 +929,7 @@ if(SDL_LIBC)
      set(HAVE_${_UPPER} 1)
    endforeach()
    set(HAVE_ALLOCA 1)
-    set(HAVE_M_PI 1)
+    check_symbol_exists(M_PI math.h HAVE_M_PI)
    target_compile_definitions(sdl-build-options INTERFACE "-D_USE_MATH_DEFINES") # needed for M_PI
    set(STDC_HEADERS 1)
  else()