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Bug 529441: Build with -Werror=return-type (where available) so that not returning a value from a non-void function results in a build error instead of a warning. r=luser

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This commit is contained in:
Chris Jones 2010-01-04 12:13:58 -06:00
parent 7dd51fb1cd
commit 2091d244b2
1 changed files with 18 additions and 0 deletions
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18
configure.in
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@ -1533,6 +1533,24 @@ if test "$GNU_CXX"; then
_WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} ${_COMPILER_PREFIX}-Wno-variadic-macros"
fi
AC_CACHE_CHECK(whether the compiler supports -Werror=return-type,
ac_has_werror_return_type,
[
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
_SAVE_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -Werror=return-type"
AC_TRY_COMPILE([],
[return(0);],
ac_has_werror_return_type="yes",
ac_has_werror_return_type="no")
CXXFLAGS="$_SAVE_CXXFLAGS"
AC_LANG_RESTORE
])
if test "$ac_has_werror_return_type" = "yes"; then
_WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=return-type"
fi
else
_DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -D_MOZILLA_CONFIG_H_ $(ACDEFINES)'
fi