More verbosity

Author: Matthias Koeppe

configure.ac

@@ -545,10 +545,10 @@ AC_CONFIG_COMMANDS(mkdirs,
         mkdir -p "$SAGE_BUILD_DIR" || AC_MSG_ERROR([could not create $SAGE_BUILD_DIR])
         rm -f "$SAGE_BUILD_DIR"/conftest
         touch "$SAGE_BUILD_DIR"/conftest || AC_MSG_ERROR([could not create a file in $SAGE_BUILD_DIR])
-        chmod -w "$SAGE_BUILD_DIR"/conftest || AC_MSG_ERROR([could not set file permissions in $SAGE_BUILD_DIR])
-        test -w "$SAGE_BUILD_DIR"/conftest && AC_MSG_ERROR([file permissions did not persist in $SAGE_BUILD_DIR])
-        chmod +w "$SAGE_BUILD_DIR"/conftest || AC_MSG_ERROR([could not set file permissions in $SAGE_BUILD_DIR])
-        test -w "$SAGE_BUILD_DIR"/conftest || AC_MSG_ERROR([file permissions did not persist in $SAGE_BUILD_DIR])
+        chmod -w "$SAGE_BUILD_DIR"/conftest || AC_MSG_ERROR([could not set file permissions -w in $SAGE_BUILD_DIR])
+        test -w "$SAGE_BUILD_DIR"/conftest && AC_MSG_ERROR([file permissions -w did not persist in $SAGE_BUILD_DIR])
+        chmod +w "$SAGE_BUILD_DIR"/conftest || AC_MSG_ERROR([could not set file permissions +w in $SAGE_BUILD_DIR])
+        test -w "$SAGE_BUILD_DIR"/conftest || AC_MSG_ERROR([file permissions +w did not persist in $SAGE_BUILD_DIR])
         rm -f "$SAGE_BUILD_DIR"/conftest
     ],
     [