AS_IF([test "${ac_cv_assert}" = "no"],
[NO_UNUSED="-Wno-unused-variable -Wno-unused-parameter"])
- BASE_WARNINGS="${W_FAIL} -pedantic -Wall -Wextra -Wundef -Wshadow ${NO_UNUSED} ${F_DIAGNOSTICS_SHOW_OPTION} ${CFLAG_VISIBILITY} ${BASE_WARNINGS_FULL}"
+ AC_CACHE_CHECK([whether it is safe to use -Wextra],
+ [ac_cv_safe_to_use_Wextra_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="${W_FAIL} -pedantic -Wextra ${AM_CFLAGS} ${CFLAGS}"
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM(
+ [[
+#include <stdio.h>
+ ]], [[]])
+ ],
+ [ac_cv_safe_to_use_Wextra_=yes],
+ [ac_cv_safe_to_use_Wextra_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ BASE_WARNINGS="${W_FAIL} -pedantic -Wall -Wundef -Wshadow ${NO_UNUSED} ${F_DIAGNOSTICS_SHOW_OPTION} ${CFLAG_VISIBILITY} ${BASE_WARNINGS_FULL}"
+ AS_IF([test "$ac_cv_safe_to_use_Wextra_" = "yes"],
+ [BASE_WARNINGS="${BASE_WARNINGS} -Wextra"],
+ [BASE_WARNINGS="${BASE_WARNINGS} -W"])
+
CC_WARNINGS="${BASE_WARNINGS} -Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wmissing-declarations -Wcast-align ${CC_WARNINGS_FULL}"
CXX_WARNINGS="${BASE_WARNINGS} -Woverloaded-virtual -Wnon-virtual-dtor -Wctor-dtor-privacy -Wno-long-long ${CXX_WARNINGS_FULL}"
[ac_cv_safe_to_use_Wattributes_=no])
CXXFLAGS="${save_CXXFLAGS}"
AC_LANG_POP()])
- AS_IF([test "$ac_cv_safe_to_use_Wattributes_" = "yes"],
- [],
- [CXX_WARNINGS="${CXX_WARNINGS} -Wno-attributes"])
+ AC_CACHE_CHECK([whether it is safe to use -Wno-attributes],
+ [ac_cv_safe_to_use_Wno_attributes_],
+ [save_CFLAGS="$CFLAGS"
+ CFLAGS="${W_FAIL} -pedantic -Wno_attributes_ ${AM_CFLAGS} ${CFLAGS}"
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM(
+ [[
+#include <stdio.h>
+ ]], [[]])
+ ],
+ [ac_cv_safe_to_use_Wno_attributes_=yes],
+ [ac_cv_safe_to_use_Wno_attributes_=no])
+ CFLAGS="$save_CFLAGS"])
+
+ dnl GCC 3.4 doesn't have -Wno-attributes, so we can't turn them off
+ dnl by using that.
+ AS_IF([test "$ac_cv_safe_to_use_Wattributes_" != "yes"],[
+ AS_IF([test "$ac_cv_safe_to_use_Wno_attributes_" = "yes"],[
+ CC_WARNINGS="${CC_WARNINGS} -Wno-attributes"
+ NO_ATTRIBUTES="-Wno-attributes"])])
+
NO_REDUNDANT_DECLS="-Wno-redundant-decls"
dnl TODO: Figure out a better way to deal with this:
- PROTOSKIP_WARNINGS="-Wno-effc++ -Wno-shadow -Wno-missing-braces -Wno-attributes"
+ PROTOSKIP_WARNINGS="-Wno-effc++ -Wno-shadow -Wno-missing-braces ${NO_ATTRIBUTES}"
NO_WERROR="-Wno-error"
INNOBASE_SKIP_WARNINGS="-Wno-shadow -Wno-cast-align"