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don't use -Wshadow for GCC 4 * configure.ac: Omit -Wshadow from list of extra warning flags when using GCC 4.
author John W. Eaton <jwe@octave.org>
date Mon, 08 Aug 2016 19:22:29 -0400
parents 83963bad5e7d
children 66dd260512a4
comparison
equal deleted inserted replaced
22232:a8fd02bc895b 22233:60faa7c85e31
2716 AC_DEFINE(ENABLE_DOCS, 1, 2716 AC_DEFINE(ENABLE_DOCS, 1,
2717 [Define to 1 to build Octave documentation files.]) 2717 [Define to 1 to build Octave documentation files.])
2718 fi 2718 fi
2719 AM_CONDITIONAL([AMCOND_BUILD_DOCS], [test $ENABLE_DOCS = yes]) 2719 AM_CONDITIONAL([AMCOND_BUILD_DOCS], [test $ENABLE_DOCS = yes])
2720 2720
2721 case "$GCC_VERSION" in
2722 *4*)
2723 ;;
2724 *)
2725 GCC_WSHADOW_OPTION=-Wshadow
2726 ;;
2727 esac
2728
2721 ### Maybe add -Wall, -W, and -Wshadow to compiler flags now that we're 2729 ### Maybe add -Wall, -W, and -Wshadow to compiler flags now that we're
2722 ### done feature testing. 2730 ### done feature testing.
2723 2731
2724 GCC_EXTRA_FLAGS="-Wall -W -Wshadow -Wformat -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wwrite-strings -Wcast-align -Wcast-qual" 2732 GCC_EXTRA_FLAGS="-Wall -W $GCC_WSHADOW_OPTION -Wformat -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wwrite-strings -Wcast-align -Wcast-qual"
2725 GXX_EXTRA_FLAGS="-Wall -W -Wshadow -Wold-style-cast -Wformat -Wpointer-arith -Wwrite-strings -Wcast-align -Wcast-qual" 2733 GXX_EXTRA_FLAGS="-Wall -W $GCC_WSHADOW_OPTION -Wold-style-cast -Wformat -Wpointer-arith -Wwrite-strings -Wcast-align -Wcast-qual"
2726 2734
2727 try_extra_warning_flags=yes 2735 try_extra_warning_flags=yes
2728 2736
2729 AC_ARG_ENABLE([extra-warning-flags], 2737 AC_ARG_ENABLE([extra-warning-flags],
2730 [AS_HELP_STRING([--disable-extra-warning-flags], 2738 [AS_HELP_STRING([--disable-extra-warning-flags],
2731 [don't add -Wall, -W, -Wshadow, and -Wold-style-cast options to CFLAGS and CXXFLAGS])], 2739 [don't add -Wall, -W, -Wformat, -Wold-style-cast, and other warning options to CFLAGS and CXXFLAGS])],
2732 [if test "$enableval" = no; then 2740 [if test "$enableval" = no; then
2733 try_extra_warning_flags=no 2741 try_extra_warning_flags=no
2734 fi], 2742 fi],
2735 []) 2743 [])
2736 2744