diff --git a/include/GL/gl.h b/include/GL/gl.h
index 3fce3dfc0a1..8e5f1383ffa 100644
--- a/include/GL/gl.h
+++ b/include/GL/gl.h
@@ -67,8 +67,7 @@
 #elif defined(__CYGWIN__) && defined(USE_OPENGL32) /* use native windows opengl32 */
 #  define GLAPI extern
 #  define GLAPIENTRY __stdcall
-#elif (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303) \
-	|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#elif defined(__GNUC__)	|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
 #  define GLAPI __attribute__((visibility("default")))
 #  define GLAPIENTRY
 #endif /* WIN32 && !CYGWIN */
diff --git a/include/GL/glut.h b/include/GL/glut.h
index d9fc938dc7a..a2826352051 100644
--- a/include/GL/glut.h
+++ b/include/GL/glut.h
@@ -103,7 +103,7 @@ extern "C" {
 #	define GLUTAPI extern
 #endif
 
-#elif defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
+#elif defined(__GNUC__)
 
 #  define GLUTAPIENTRY
 #  define GLUTAPIENTRYV
diff --git a/src/egl/main/eglcompiler.h b/src/egl/main/eglcompiler.h
index d844fbb0efb..401a9cf56ad 100644
--- a/src/egl/main/eglcompiler.h
+++ b/src/egl/main/eglcompiler.h
@@ -64,8 +64,7 @@
 /**
  * Function visibility
  */
-#if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303) \
-	|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
 #  define PUBLIC __attribute__((visibility("default")))
 #else
 #  define PUBLIC
@@ -79,7 +78,7 @@
 #ifndef __FUNCTION__
 # if defined(__VMS)
 #  define __FUNCTION__ "VMS$NL:"
-# elif ((!defined __GNUC__) || (__GNUC__ < 2)) && (!defined __xlC__) && \
+# elif (!defined __GNUC__) && (!defined __xlC__) && \
       (!defined(_MSC_VER) || _MSC_VER < 1300)
 #  if (__STDC_VERSION__ >= 199901L) /* C99 */ || \
     (defined(__SUNPRO_C) && defined(__C99FEATURES__))
diff --git a/src/gallium/include/pipe/p_compiler.h b/src/gallium/include/pipe/p_compiler.h
index c7d35074948..b93b38310ac 100644
--- a/src/gallium/include/pipe/p_compiler.h
+++ b/src/gallium/include/pipe/p_compiler.h
@@ -106,8 +106,7 @@ typedef unsigned char boolean;
 
 /* Function visibility */
 #ifndef PUBLIC
-#  if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303) \
-	|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
 #    define PUBLIC __attribute__((visibility("default")))
 #  else
 #    define PUBLIC
@@ -119,7 +118,7 @@ typedef unsigned char boolean;
  * If we're not using gcc, define __FUNCTION__ as a cpp symbol here.
  */
 #ifndef __FUNCTION__
-# if (!defined(__GNUC__) || (__GNUC__ < 2))
+# if !defined(__GNUC__)
 #  if (__STDC_VERSION__ >= 199901L) /* C99 */ || \
     (defined(__SUNPRO_C) && defined(__C99FEATURES__))
 #   define __FUNCTION__ __func__
@@ -145,7 +144,7 @@ typedef unsigned char boolean;
 
 
 
-#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
+#if defined(__GNUC__)
 #define PIPE_DEPRECATED  __attribute__((__deprecated__))
 #else
 #define PIPE_DEPRECATED
diff --git a/src/glx/XF86dri.c b/src/glx/XF86dri.c
index 248d96ac5de..fdbdd43000e 100644
--- a/src/glx/XF86dri.c
+++ b/src/glx/XF86dri.c
@@ -45,7 +45,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "xf86dristr.h"
 
 
-#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
+#if defined(__GNUC__)
 #  define PUBLIC __attribute__((visibility("default")))
 #  define USED __attribute__((used))
 #else
diff --git a/src/glx/glxclient.h b/src/glx/glxclient.h
index 04ce781c435..8e5dc785dd9 100644
--- a/src/glx/glxclient.h
+++ b/src/glx/glxclient.h
@@ -69,7 +69,7 @@
  * We also need to define a USED attribute, so the optimizer doesn't
  * inline a static function that we later use in an alias. - ajax
  */
-#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
+#if defined(__GNUC__)
 #  define PUBLIC __attribute__((visibility("default")))
 #  define USED __attribute__((used))
 #else
diff --git a/src/glx/indirect_vertex_program.c b/src/glx/indirect_vertex_program.c
index 3313ac008a5..d822a7ee56e 100644
--- a/src/glx/indirect_vertex_program.c
+++ b/src/glx/indirect_vertex_program.c
@@ -30,7 +30,7 @@
 #include "indirect_vertex_array.h"
 #include <GL/glxproto.h>
 
-#if !defined __GNUC__ || __GNUC__ < 3
+#if !defined(__GNUC__)
 #  define __builtin_expect(x, y) x
 #endif
 
diff --git a/src/glx/pixelstore.c b/src/glx/pixelstore.c
index 8b51b5d8b7f..dc193b9f747 100644
--- a/src/glx/pixelstore.c
+++ b/src/glx/pixelstore.c
@@ -31,7 +31,7 @@
 #include "glxclient.h"
 #include "indirect.h"
 
-#if !defined __GNUC__ || __GNUC__ < 3
+#if !defined(__GNUC__)
 #  define __builtin_expect(x, y) x
 #endif
 
diff --git a/src/mesa/glapi/glapi.h b/src/mesa/glapi/glapi.h
index 2eae6d5c438..1ca2e4beff1 100644
--- a/src/mesa/glapi/glapi.h
+++ b/src/mesa/glapi/glapi.h
@@ -62,7 +62,7 @@ typedef void (*_glapi_proc)(void); /* generic function pointer */
 #endif
 
 
-#if defined(__GNUC__) && (__GNUC__ >= 3)
+#if defined(__GNUC__)
 #  define likely(x)   __builtin_expect(!!(x), 1)
 #  define unlikely(x) __builtin_expect(!!(x), 0)
 #else
diff --git a/src/mesa/main/compiler.h b/src/mesa/main/compiler.h
index 9cef99f67a5..05e69e56a6b 100644
--- a/src/mesa/main/compiler.h
+++ b/src/mesa/main/compiler.h
@@ -173,8 +173,7 @@ extern "C" {
  * We also need to define a USED attribute, so the optimizer doesn't 
  * inline a static function that we later use in an alias. - ajax
  */
-#if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303) \
-	|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)
 #  define PUBLIC __attribute__((visibility("default")))
 #  define USED __attribute__((used))
 #else
@@ -197,7 +196,7 @@ extern "C" {
 /**
  * __builtin_expect macros
  */
-#if (!defined(__GNUC__) || __GNUC__ < 3) && (!defined(__IBMC__) || __IBMC__ < 900)
+#if !defined(__GNUC__)
 #  define __builtin_expect(x, y) x
 #endif
 
@@ -210,7 +209,7 @@ extern "C" {
 #ifndef __FUNCTION__
 # if defined(__VMS)
 #  define __FUNCTION__ "VMS$NL:"
-# elif ((!defined __GNUC__) || (__GNUC__ < 2)) && (!defined __xlC__) && \
+# elif !defined(__GNUC__) && !defined(__xlC__) &&	\
       (!defined(_MSC_VER) || _MSC_VER < 1300)
 #  if (__STDC_VERSION__ >= 199901L) /* C99 */ || \
     (defined(__SUNPRO_C) && defined(__C99FEATURES__))
@@ -322,8 +321,7 @@ static INLINE GLuint CPU_TO_LE32(GLuint x)
  * LONGSTRING macro
  * gcc -pedantic warns about long string literals, LONGSTRING silences that.
  */
-#if !defined(__GNUC__) || (__GNUC__ < 2) || \
-    ((__GNUC__ == 2) && (__GNUC_MINOR__ <= 7))
+#if !defined(__GNUC__)
 # define LONGSTRING
 #else
 # define LONGSTRING __extension__
diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
index ac3a7b5d61a..fb4a00eca7b 100644
--- a/src/mesa/main/imports.h
+++ b/src/mesa/main/imports.h
@@ -240,9 +240,7 @@ static INLINE int GET_FLOAT_BITS( float x )
 /***
  *** IROUND: return (as an integer) float rounded to nearest integer
  ***/
-#if defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__) && \
-			(!(defined(__BEOS__) || defined(__HAIKU__))  || \
-			(__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)))
+#if defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__)
 static INLINE int iround(float f)
 {
    int r;
diff --git a/src/mesa/x86/assyntax.h b/src/mesa/x86/assyntax.h
index de1f6a48ded..4a41812f6b6 100644
--- a/src/mesa/x86/assyntax.h
+++ b/src/mesa/x86/assyntax.h
@@ -1737,7 +1737,7 @@ SECTION _DATA public align=16 class=DATA use32 flat
  */
 #if defined(GNU_ASSEMBLER) && !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__)
 #  define HIDDEN(x) .hidden x
-#elif defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303 && !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__)
+#elif defined(__GNUC__) && !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__)
 #  pragma GCC visibility push(default)
 #  define HIDDEN(x) .hidden x
 #else