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Diffstat (limited to 'm4/gl_manywarnings.m4')
| -rw-r--r-- | m4/gl_manywarnings.m4 | 329 |
1 files changed, 0 insertions, 329 deletions
diff --git a/m4/gl_manywarnings.m4 b/m4/gl_manywarnings.m4 deleted file mode 100644 index d10bcd0..0000000 --- a/m4/gl_manywarnings.m4 +++ /dev/null @@ -1,329 +0,0 @@ -# manywarnings.m4 serial 13 -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. -# -# The effects of this macro depend on the current language (_AC_LANG). -AC_DEFUN([gl_MANYWARN_ALL_GCC], -[_AC_LANG_DISPATCH([$0], _AC_LANG, $@)]) - -# Specialization for _AC_LANG = C. -# Use of m4_defun rather than AC_DEFUN works around a bug in autoconf < 2.63b. -m4_defun([gl_MANYWARN_ALL_GCC(C)], -[ - AC_LANG_PUSH([C]) - - dnl First, check for some issues that only occur when combining multiple - dnl gcc warning categories. - AC_REQUIRE([AC_PROG_CC]) - if test -n "$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 -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 \ - -Wbool-operation \ - -Wbuiltin-declaration-mismatch \ - -Wbuiltin-macro-redefined \ - -Wcast-align \ - -Wchar-subscripts \ - -Wchkp \ - -Wclobbered \ - -Wcomment \ - -Wcomments \ - -Wcoverage-mismatch \ - -Wcpp \ - -Wdangling-else \ - -Wdate-time \ - -Wdeprecated \ - -Wdeprecated-declarations \ - -Wdesignated-init \ - -Wdisabled-optimization \ - -Wdiscarded-array-qualifiers \ - -Wdiscarded-qualifiers \ - -Wdiv-by-zero \ - -Wdouble-promotion \ - -Wduplicated-branches \ - -Wduplicated-cond \ - -Wduplicate-decl-specifier \ - -Wempty-body \ - -Wendif-labels \ - -Wenum-compare \ - -Wexpansion-to-defined \ - -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-in-bool-context \ - -Wint-to-pointer-cast \ - -Winvalid-memory-model \ - -Winvalid-pch \ - -Wjump-misses-init \ - -Wlogical-not-parentheses \ - -Wlogical-op \ - -Wmain \ - -Wmaybe-uninitialized \ - -Wmemset-elt-size \ - -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-compare \ - -Wpointer-sign \ - -Wpointer-to-int-cast \ - -Wpragmas \ - -Wpsabi \ - -Wrestrict \ - -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 \ - -Wswitch-unreachable \ - -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. - # Would prefer "min (PTRDIFF_MAX, SIZE_MAX)", but it must be a literal. - # Also, AC_COMPUTE_INT requires it to fit in a long; it is 2**63 on - # the only platforms where it does not fit in a long, so make that - # a special case. - AC_MSG_CHECKING([max safe object size]) - AC_COMPUTE_INT([gl_alloc_max], - [LONG_MAX < (PTRDIFF_MAX < (size_t) -1 ? PTRDIFF_MAX : (size_t) -1) - ? -1 - : PTRDIFF_MAX < (size_t) -1 ? (long) PTRDIFF_MAX : (long) (size_t) -1], - [[#include <limits.h> - #include <stddef.h> - #include <stdint.h> - ]], - [gl_alloc_max=2147483647]) - case $gl_alloc_max in - -1) gl_alloc_max=9223372036854775807;; - esac - AC_MSG_RESULT([$gl_alloc_max]) - gl_manywarn_set="$gl_manywarn_set -Walloc-size-larger-than=$gl_alloc_max" - gl_manywarn_set="$gl_manywarn_set -Warray-bounds=2" - gl_manywarn_set="$gl_manywarn_set -Wformat-overflow=2" - gl_manywarn_set="$gl_manywarn_set -Wformat-truncation=2" - gl_manywarn_set="$gl_manywarn_set -Wimplicit-fallthrough=5" - gl_manywarn_set="$gl_manywarn_set -Wnormalized=nfc" - gl_manywarn_set="$gl_manywarn_set -Wshift-overflow=2" - gl_manywarn_set="$gl_manywarn_set -Wstringop-overflow=2" - gl_manywarn_set="$gl_manywarn_set -Wunused-const-variable=2" - gl_manywarn_set="$gl_manywarn_set -Wvla-larger-than=4031" - - # These are needed for older GCC versions. - if test -n "$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 - - AC_LANG_POP([C]) -]) - -# Specialization for _AC_LANG = C++. -# Use of m4_defun rather than AC_DEFUN works around a bug in autoconf < 2.63b. -m4_defun([gl_MANYWARN_ALL_GCC(C++)], -[ - gl_MANYWARN_ALL_GCC_CXX_IMPL([$1]) -]) |