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-rw-r--r--gl/m4/manywarnings.m4276
1 files changed, 0 insertions, 276 deletions
diff --git a/gl/m4/manywarnings.m4 b/gl/m4/manywarnings.m4
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index 0f06ade..0000000
--- a/gl/m4/manywarnings.m4
+++ /dev/null
@@ -1,276 +0,0 @@
-# manywarnings.m4 serial 8
-dnl Copyright (C) 2008-2017 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.
-
-dnl From Simon Josefsson
-
-# gl_MANYWARN_COMPLEMENT(OUTVAR, LISTVAR, REMOVEVAR)
-# --------------------------------------------------
-# Copy LISTVAR to OUTVAR except for the entries in REMOVEVAR.
-# Elements separated by whitespace. In set logic terms, the function
-# does OUTVAR = LISTVAR \ REMOVEVAR.
-AC_DEFUN([gl_MANYWARN_COMPLEMENT],
-[
- gl_warn_set=
- set x $2; shift
- for gl_warn_item
- do
- case " $3 " in
- *" $gl_warn_item "*)
- ;;
- *)
- gl_warn_set="$gl_warn_set $gl_warn_item"
- ;;
- esac
- done
- $1=$gl_warn_set
-])
-
-# gl_MANYWARN_ALL_GCC(VARIABLE)
-# -----------------------------
-# Add all documented GCC warning parameters to variable VARIABLE.
-# Note that you need to test them using gl_WARN_ADD if you want to
-# make sure your gcc understands it.
-AC_DEFUN([gl_MANYWARN_ALL_GCC],
-[
- dnl First, check for some issues that only occur when combining multiple
- dnl gcc warning categories.
- AC_REQUIRE([AC_PROG_CC])
- if test -n "$GCC"; then
-
- 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([$gl_cv_cc_nomfi_supported])
-
- if test "$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])
- 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])
-
- 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 \
- -fno-common \
- -W \
- -Wabi \
- -Waddress \
- -Waggressive-loop-optimizations \
- -Wall \
- -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 \
- -Wduplicated-cond \
- -Wempty-body \
- -Wendif-labels \
- -Wenum-compare \
- -Wextra \
- -Wformat-contains-nul \
- -Wformat-extra-args \
- -Wformat-nonliteral \
- -Wformat-security \
- -Wformat-signedness \
- -Wformat-y2k \
- -Wformat-zero-length \
- -Wframe-address \
- -Wfree-nonheap-object \
- -Whsa \
- -Wignored-attributes \
- -Wignored-qualifiers \
- -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 \
- -Wmisleading-indentation \
- -Wmissing-braces \
- -Wmissing-declarations \
- -Wmissing-field-initializers \
- -Wmissing-include-dirs \
- -Wmissing-parameter-type \
- -Wmissing-prototypes \
- -Wmultichar \
- -Wnarrowing \
- -Wnested-externs \
- -Wnonnull \
- -Wnonnull-compare \
- -Wnull-dereference \
- -Wodr \
- -Wold-style-declaration \
- -Wold-style-definition \
- -Wopenmp-simd \
- -Woverflow \
- -Woverlength-strings \
- -Woverride-init \
- -Wpacked \
- -Wpacked-bitfield-compat \
- -Wparentheses \
- -Wpointer-arith \
- -Wpointer-sign \
- -Wpointer-to-int-cast \
- -Wpragmas \
- -Wreturn-local-addr \
- -Wreturn-type \
- -Wscalar-storage-order \
- -Wsequence-point \
- -Wshadow \
- -Wshift-count-negative \
- -Wshift-count-overflow \
- -Wshift-negative-value \
- -Wsizeof-array-argument \
- -Wsizeof-pointer-memaccess \
- -Wstack-protector \
- -Wstrict-aliasing \
- -Wstrict-overflow \
- -Wstrict-prototypes \
- -Wsuggest-attribute=const \
- -Wsuggest-attribute=format \
- -Wsuggest-attribute=noreturn \
- -Wsuggest-attribute=pure \
- -Wsuggest-final-methods \
- -Wsuggest-final-types \
- -Wswitch \
- -Wswitch-bool \
- -Wswitch-default \
- -Wsync-nand \
- -Wsystem-headers \
- -Wtautological-compare \
- -Wtrampolines \
- -Wtrigraphs \
- -Wtype-limits \
- -Wuninitialized \
- -Wunknown-pragmas \
- -Wunsafe-loop-optimizations \
- -Wunused \
- -Wunused-but-set-parameter \
- -Wunused-but-set-variable \
- -Wunused-function \
- -Wunused-label \
- -Wunused-local-typedefs \
- -Wunused-macros \
- -Wunused-parameter \
- -Wunused-result \
- -Wunused-value \
- -Wunused-variable \
- -Wvarargs \
- -Wvariadic-macros \
- -Wvector-operation-performance \
- -Wvla \
- -Wvolatile-register-var \
- -Wwrite-strings \
- \
- ; do
- 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="$gl_manywarn_set -Wnormalized=nfc"
- gl_manywarn_set="$gl_manywarn_set -Wshift-overflow=2"
- gl_manywarn_set="$gl_manywarn_set -Wunused-const-variable=2"
-
- # These are needed for older GCC versions.
- if test -n "$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="$gl_manywarn_set -Wno-missing-field-initializers"
- fi
-
- if test "$gl_cv_cc_uninitialized_supported" = no; then
- gl_manywarn_set="$gl_manywarn_set -Wno-uninitialized"
- fi
-
- $1=$gl_manywarn_set
-])
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