-# manywarnings.m4 serial 13
+# manywarnings.m4 serial 17
dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl Check if -W -Werror -Wno-missing-field-initializers is supported
dnl with the current $CC $CFLAGS $CPPFLAGS.
- AC_MSG_CHECKING([whether -Wno-missing-field-initializers is supported])
- AC_CACHE_VAL([gl_cv_cc_nomfi_supported], [
- gl_save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -W -Werror -Wno-missing-field-initializers"
- AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[]], [[]])],
- [gl_cv_cc_nomfi_supported=yes],
- [gl_cv_cc_nomfi_supported=no])
- CFLAGS="$gl_save_CFLAGS"])
- AC_MSG_RESULT([$gl_cv_cc_nomfi_supported])
+ AC_CACHE_CHECK([whether -Wno-missing-field-initializers is supported],
+ [gl_cv_cc_nomfi_supported],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -W -Werror -Wno-missing-field-initializers"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[]], [[]])],
+ [gl_cv_cc_nomfi_supported=yes],
+ [gl_cv_cc_nomfi_supported=no])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
if test "$gl_cv_cc_nomfi_supported" = yes; then
dnl Now check whether -Wno-missing-field-initializers is needed
dnl for the { 0, } construct.
- AC_MSG_CHECKING([whether -Wno-missing-field-initializers is needed])
- AC_CACHE_VAL([gl_cv_cc_nomfi_needed], [
- gl_save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -W -Werror"
- AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM(
- [[int f (void)
- {
- typedef struct { int a; int b; } s_t;
- s_t s1 = { 0, };
- return s1.b;
- }
- ]],
- [[]])],
- [gl_cv_cc_nomfi_needed=no],
- [gl_cv_cc_nomfi_needed=yes])
- CFLAGS="$gl_save_CFLAGS"
- ])
- AC_MSG_RESULT([$gl_cv_cc_nomfi_needed])
+ AC_CACHE_CHECK([whether -Wno-missing-field-initializers is needed],
+ [gl_cv_cc_nomfi_needed],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -W -Werror"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[int f (void)
+ {
+ typedef struct { int a; int b; } s_t;
+ s_t s1 = { 0, };
+ return s1.b;
+ }
+ ]],
+ [[]])],
+ [gl_cv_cc_nomfi_needed=no],
+ [gl_cv_cc_nomfi_needed=yes])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
fi
dnl Next, check if -Werror -Wuninitialized is useful with the
dnl user's choice of $CFLAGS; some versions of gcc warn that it
dnl has no effect if -O is not also used
- AC_MSG_CHECKING([whether -Wuninitialized is supported])
- AC_CACHE_VAL([gl_cv_cc_uninitialized_supported], [
- gl_save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -Werror -Wuninitialized"
- AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[]], [[]])],
- [gl_cv_cc_uninitialized_supported=yes],
- [gl_cv_cc_uninitialized_supported=no])
- CFLAGS="$gl_save_CFLAGS"])
- AC_MSG_RESULT([$gl_cv_cc_uninitialized_supported])
+ AC_CACHE_CHECK([whether -Wuninitialized is supported],
+ [gl_cv_cc_uninitialized_supported],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wuninitialized"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[]], [[]])],
+ [gl_cv_cc_uninitialized_supported=yes],
+ [gl_cv_cc_uninitialized_supported=no])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
fi
# To compare this list to your installed GCC's, run this Bash command:
#
# comm -3 \
- # <(sed -n 's/^ *\(-[^ ]*\) .*/\1/p' manywarnings.m4 | sort) \
- # <(gcc --help=warnings | sed -n 's/^ \(-[^ ]*\) .*/\1/p' | sort |
- # grep -v -x -F -f <(
- # awk '/^[^#]/ {print $1}' ../build-aux/gcc-warning.spec))
+ # <((sed -n 's/^ *\(-[^ 0-9][^ ]*\) .*/\1/p' manywarnings.m4; \
+ # awk '/^[^#]/ {print $1}' ../build-aux/gcc-warning.spec) | sort) \
+ # <(LC_ALL=C gcc --help=warnings | sed -n 's/^ \(-[^ ]*\) .*/\1/p' | sort)
gl_manywarn_set=
for gl_manywarn_item in -fno-common \
-W \
- -Wabi \
-Waddress \
-Waggressive-loop-optimizations \
-Wall \
+ -Wattribute-alias \
-Wattributes \
-Wbad-function-cast \
-Wbool-compare \
-Wbuiltin-declaration-mismatch \
-Wbuiltin-macro-redefined \
-Wcast-align \
+ -Wcast-align=strict \
+ -Wcast-function-type \
-Wchar-subscripts \
- -Wchkp \
-Wclobbered \
-Wcomment \
-Wcomments \
-Wframe-address \
-Wfree-nonheap-object \
-Whsa \
+ -Wif-not-aligned \
-Wignored-attributes \
-Wignored-qualifiers \
-Wimplicit \
-Wint-to-pointer-cast \
-Winvalid-memory-model \
-Winvalid-pch \
- -Wjump-misses-init \
-Wlogical-not-parentheses \
-Wlogical-op \
-Wmain \
-Wmemset-elt-size \
-Wmemset-transposed-args \
-Wmisleading-indentation \
+ -Wmissing-attributes \
-Wmissing-braces \
-Wmissing-declarations \
-Wmissing-field-initializers \
-Wmissing-parameter-type \
-Wmissing-prototypes \
-Wmultichar \
+ -Wmultistatement-macros \
-Wnarrowing \
-Wnested-externs \
-Wnonnull \
-Woverride-init \
-Wpacked \
-Wpacked-bitfield-compat \
+ -Wpacked-not-aligned \
-Wparentheses \
-Wpointer-arith \
-Wpointer-compare \
-Wshift-count-overflow \
-Wshift-negative-value \
-Wsizeof-array-argument \
+ -Wsizeof-pointer-div \
-Wsizeof-pointer-memaccess \
-Wstack-protector \
-Wstrict-aliasing \
-Wstrict-overflow \
-Wstrict-prototypes \
+ -Wstringop-truncation \
+ -Wsuggest-attribute=cold \
-Wsuggest-attribute=const \
-Wsuggest-attribute=format \
+ -Wsuggest-attribute=malloc \
-Wsuggest-attribute=noreturn \
-Wsuggest-attribute=pure \
-Wsuggest-final-methods \
-Wsuggest-final-types \
-Wswitch \
-Wswitch-bool \
- -Wswitch-default \
-Wswitch-unreachable \
-Wsync-nand \
-Wsystem-headers \