use ASM_API variable, bug 4415
diff --git a/configs/linux-x86-glide b/configs/linux-x86-glide
index b874b92..1397bdc 100644
--- a/configs/linux-x86-glide
+++ b/configs/linux-x86-glide
@@ -15,7 +15,8 @@
 GLUT_CFLAGS = -fexceptions
 
 
-ASM_SOURCES = $(X86_SOURCES) $(X86_API)
+ASM_SOURCES = $(X86_SOURCES)
+ASM_API = $(X86_API)
 
 # Library/program dependencies
 GL_LIB_DEPS = -L/usr/X11R6/lib -lX11 -lXext -L/usr/local/glide/lib -lglide3x -lm -lpthread