diff options
author | Chris Wilson <chris+github@qwirx.com> | 2017-06-18 19:42:43 +0100 |
---|---|---|
committer | Chris Wilson <chris+github@qwirx.com> | 2017-06-22 20:27:51 +0100 |
commit | d8422a8b053b62c67e5fe2e861a09d2c792b657a (patch) | |
tree | 8e7c6004f0b604936999a22c82f70bd9bcf5371c /infrastructure/m4/boxbackup_tests.m4 | |
parent | 25e445a6848a870aabd89a3b8a013265aa3cf17b (diff) |
Use AX_CHECK_COMPILE_FLAG, add more checks
Disable pointless deprecation warnings for std::auto_ptr.
Diffstat (limited to 'infrastructure/m4/boxbackup_tests.m4')
-rw-r--r-- | infrastructure/m4/boxbackup_tests.m4 | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/infrastructure/m4/boxbackup_tests.m4 b/infrastructure/m4/boxbackup_tests.m4 index c7838a7f..849ffd7a 100644 --- a/infrastructure/m4/boxbackup_tests.m4 +++ b/infrastructure/m4/boxbackup_tests.m4 @@ -10,22 +10,30 @@ solaris*) ;; esac -if test "x$GXX" = "xyes"; then - # Use -Wall if we have gcc. This gives better warnings - CXXFLAGS_STRICT='-Wall -Wundef' - - # Check whether gcc accepts -Werror=return-type, and if so add it to CXXFLAGS_STRICT - my_save_cflags="$CXXFLAGS" - CXXFLAGS="-Werror=return-type" - AC_MSG_CHECKING([whether $CXX accepts $CXXFLAGS]) - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], - [AC_MSG_RESULT([yes])] - [CXXFLAGS_STRICT="$CXXFLAGS_STRICT $CXXFLAGS"], - [AC_MSG_RESULT([no])] - ) - CXXFLAGS="$my_save_cflags" - AC_SUBST([CXXFLAGS_STRICT]) +# Enable some compiler flags if the compiler supports them. This gives better warnings +# and detects some problems early. +AX_CHECK_COMPILE_FLAG(-Wall, [cxxflags_strict="$cxxflags_strict -Wall"]) +# -Wundef would be a good idea, but Boost is full of undefined variable use, so we need +# to disable it for now so that we can concentrate on real errors: +dnl AX_CHECK_COMPILE_FLAG(-Wundef, [cxxflags_strict="$cxxflags_strict -Wundef"]) +AX_CHECK_COMPILE_FLAG(-Werror=return-type, + [cxxflags_strict="$cxxflags_strict -Werror=return-type"]) +AX_CHECK_COMPILE_FLAG(-Werror=delete-non-virtual-dtor, + [cxxflags_strict="$cxxflags_strict -Werror=delete-non-virtual-dtor"]) +AX_CHECK_COMPILE_FLAG(-Werror=undefined-bool-conversion, + [cxxflags_strict="$cxxflags_strict -Werror=undefined-bool-conversion"]) +# We should really enable -Werror=sometimes-uninitialized, but QDBM violates it: +dnl AX_CHECK_COMPILE_FLAG(-Werror=sometimes-uninitialized, +dnl [cxxflags_strict="$cxxflags_strict -Werror=sometimes-uninitialized"]) +# This error is detected by MSVC, but not usually by GCC/Clang: +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58114 +AX_CHECK_COMPILE_FLAG(-Werror=delete-incomplete, + [cxxflags_strict="$cxxflags_strict -Werror=delete-incomplete"]) +AX_CHECK_COMPILE_FLAG(-Wno-deprecated-declarations, + [cxxflags_strict="$cxxflags_strict -Wno-deprecated-declarations"]) +AC_SUBST([CXXFLAGS_STRICT], [$cxxflags_strict]) +if test "x$GXX" = "xyes"; then # Don't check for gcc -rdynamic on Solaris as it's broken, but returns 0. # On Cygwin it does nothing except cause gcc to emit a warning message. case $build_os in @@ -49,7 +57,6 @@ if test "x$GXX" = "xyes"; then LDFLAGS=$save_LDFLAGS ;; esac - fi AC_PATH_PROG([PERL], [perl], [AC_MSG_ERROR([[perl executable was not found]])]) |