diff --git a/configure.in b/configure.in
index 5b4df4b24e..c409dd47ef 100644
--- a/configure.in
+++ b/configure.in
@@ -2178,7 +2178,7 @@ if test "$USE_LINUX" = 1 -o "$USE_GNU" = 1; then
         AC_TRY_COMPILE([#include <features.h>],
             [
                 #if (__GLIBC__ < 2) || (__GLIBC_MINOR__ < 1)
-                    #error not glibc2.1
+                not glibc 2.1
                 #endif
             ],
             [
@@ -2774,7 +2774,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                            ],
                            [
                             #if !GTK_CHECK_VERSION(2,4,0)
-                            #error "Not GTK+ 2.4"
+                            Not GTK+ 2.4
                             #endif
                            ],
                            [
@@ -3140,7 +3140,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                        ],
                        [
                         #if XmVersion < 2000
-                        #error "Not Motif 2"
+                        Not Motif 2
                         #endif
                        ],
                        [
@@ -3158,7 +3158,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                        ],
                        [
                         #if !defined(LesstifVersion) || LesstifVersion <= 0
-                        #error "Not Lesstif"
+                        Not Lesstif
                         #endif
                        ],
                        [
@@ -6823,7 +6823,7 @@ else
         AC_MSG_CHECKING([if this GCC version is >= 4.0 and needs -DNO_GCC_PRAGMA])
         AC_TRY_COMPILE([],
             [#if (__GNUC__ < 4)
-             #error "Not GCC 4.0 or greater"
+             Not GCC 4.0 or greater
              #endif
             ],
             [GCC_PRAGMA_FLAGS="-DNO_GCC_PRAGMA"
@@ -6848,7 +6848,7 @@ else
                         AC_MSG_CHECKING([if this MinGW version needs -DNO_GCC_PRAGMA])
                         AC_TRY_COMPILE([],
                             [#if !(__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2))
-                             #error "Not GCC 3.2 or greater"
+                             Not GCC 3.2 or greater
                              #endif
                             ],
                             [GCC_PRAGMA_FLAGS="-DNO_GCC_PRAGMA"
@@ -6864,7 +6864,7 @@ else
                         AC_MSG_CHECKING([if this gcc version needs -DNO_GCC_PRAGMA])
                         AC_TRY_COMPILE([],
                             [#if !(__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2))
-                             #error "Not GCC 3.2 or greater"
+                             Not GCC 3.2 or greater
                              #endif
                             ],
                             [GCC_PRAGMA_FLAGS="-DNO_GCC_PRAGMA"