-# manywarnings.m4 serial 5
-dnl Copyright (C) 2008-2013 Free Software Foundation, Inc.
+# manywarnings.m4 serial 7
+dnl Copyright (C) 2008-2016 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 with or without modifications, as long as this notice is preserved.
fi
# List all gcc warning categories.
+ # 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 <(
+ # awk '/^[^#]/ {print $1}' ../build-aux/gcc-warning.spec))
+
gl_manywarn_set=
for gl_manywarn_item in \
-W \
-Waddress \
-Waggressive-loop-optimizations \
-Wall \
- -Warray-bounds \
-Wattributes \
-Wbad-function-cast \
+ -Wbool-compare \
-Wbuiltin-macro-redefined \
-Wcast-align \
-Wchar-subscripts \
+ -Wchkp \
-Wclobbered \
-Wcomment \
-Wcomments \
-Wcoverage-mismatch \
-Wcpp \
+ -Wdate-time \
-Wdeprecated \
-Wdeprecated-declarations \
+ -Wdesignated-init \
-Wdisabled-optimization \
+ -Wdiscarded-array-qualifiers \
+ -Wdiscarded-qualifiers \
-Wdiv-by-zero \
-Wdouble-promotion \
-Wempty-body \
-Wformat-extra-args \
-Wformat-nonliteral \
-Wformat-security \
+ -Wformat-signedness \
-Wformat-y2k \
-Wformat-zero-length \
-Wfree-nonheap-object \
-Wimplicit \
-Wimplicit-function-declaration \
-Wimplicit-int \
+ -Wincompatible-pointer-types \
-Winit-self \
-Winline \
+ -Wint-conversion \
-Wint-to-pointer-cast \
-Winvalid-memory-model \
-Winvalid-pch \
-Wjump-misses-init \
+ -Wlogical-not-parentheses \
-Wlogical-op \
-Wmain \
-Wmaybe-uninitialized \
+ -Wmemset-transposed-args \
-Wmissing-braces \
-Wmissing-declarations \
-Wmissing-field-initializers \
-Wmissing-include-dirs \
-Wmissing-parameter-type \
-Wmissing-prototypes \
- -Wmudflap \
-Wmultichar \
-Wnarrowing \
-Wnested-externs \
-Wnonnull \
- -Wnormalized=nfc \
+ -Wodr \
-Wold-style-declaration \
-Wold-style-definition \
+ -Wopenmp-simd \
-Woverflow \
-Woverlength-strings \
-Woverride-init \
-Wreturn-type \
-Wsequence-point \
-Wshadow \
+ -Wshift-count-negative \
+ -Wshift-count-overflow \
+ -Wsizeof-array-argument \
-Wsizeof-pointer-memaccess \
-Wstack-protector \
-Wstrict-aliasing \
-Wsuggest-attribute=format \
-Wsuggest-attribute=noreturn \
-Wsuggest-attribute=pure \
+ -Wsuggest-final-methods \
+ -Wsuggest-final-types \
-Wswitch \
+ -Wswitch-bool \
-Wswitch-default \
-Wsync-nand \
-Wsystem-headers \
gl_manywarn_set="$gl_manywarn_set $gl_manywarn_item"
done
+ # gcc --help=warnings outputs an unusual form for these options; list
+ # them here so that the above 'comm' command doesn't report a false match.
+ gl_manywarn_set="$gl_manywarn_set -Warray-bounds=2"
+ gl_manywarn_set="$gl_manywarn_set -Wnormalized=nfc"
+
+ # These are needed for older GCC versions.
+ if test -n "$GCC"; then
+ case `($CC --version) 2>/dev/null` in
+ 'gcc (GCC) '[[0-3]].* | \
+ 'gcc (GCC) '4.[[0-7]].*)
+ gl_manywarn_set="$gl_manywarn_set -fdiagnostics-show-option"
+ gl_manywarn_set="$gl_manywarn_set -funit-at-a-time"
+ ;;
+ esac
+ fi
+
# Disable specific options as needed.
if test "$gl_cv_cc_nomfi_needed" = yes; then
gl_manywarn_set="$gl_manywarn_set -Wno-missing-field-initializers"