use -Wextra and fix the warnings it caused

diff --git a/Makefile b/Makefile
index 0322bfba8812f1f471bd924d05038f4f7df64d38..2fa9312d0c33c0721dd45c1b2eb961297af13373 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CFLAGS := -Wall -g -O1
+CFLAGS := -Wall -Wextra -g -O1
 
 COMMON_SRC = gltest.cpp glwindow.cpp glutil.cpp
 COMMON_HDR = glwindow.h glutil.h

diff --git a/eglinfo.c b/eglinfo.c
index a0afc08b90e51f289dfff5a5a6df7d11fb247fca..4a959f1798a630fe95d328a5f698248080678876 100644 (file)
--- a/eglinfo.c
+++ b/eglinfo.c
@@ -102,7 +102,7 @@ PrintConfigs(EGLDisplay d)
 
 
 /**
- * Print table of all available configurations.
+ * If possible, irint table of all available configurations.
  */
 static void
 PrintModes(EGLDisplay d)
@@ -137,13 +137,15 @@ PrintModes(EGLDisplay d)
          }
       }
    }
+#else
+       (void)d; /* mark d as unused */
 #endif
 }
 
 
 
 int
-main(int argc, char *argv[])
+main(void)
 {
    int maj, min;
    EGLDisplay d = eglGetDisplay(EGL_DEFAULT_DISPLAY);