Commit 02c874717648f1dd919eca9c39a8b2b0ebc73657
2022-07-27T15:05:41
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
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f2eec85..8fc50af 100644
--- 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()