Added explanation for #error.

ago%!(EXTRA string=12 years) · bd2d571c31
parent bea59f64b2
commit bd2d571c31
1 changed files with 4 additions and 0 deletions
--- a/include/GLFW/glfw3.h
+++ b/include/GLFW/glfw3.h
@ -140,6 +140,10 @@ extern "C" {
 /* ---------------- GLFW related system specific defines ----------------- */

 #if defined(GLFW_DLL) && defined(_GLFW_BUILD_DLL)
+ /* GLFW_DLL is defined by users of GLFW when compiling programs that will link
+  * to the DLL version of the GLFW library.  _GLFW_BUILD_DLL is defined by the
+  * GLFW configuration header when compiling the DLL version of the library.
+  */
 #error "You must not have both GLFW_DLL and _GLFW_BUILD_DLL defined"
 #endif