basic structure
This commit is contained in:
Klas Lindfors
@@ -0,0 +1,183 @@
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# manywarnings.m4 serial 4
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dnl Copyright (C) 2008-2012 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl From Simon Josefsson
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# gl_MANYWARN_COMPLEMENT(OUTVAR, LISTVAR, REMOVEVAR)
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# --------------------------------------------------
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# Copy LISTVAR to OUTVAR except for the entries in REMOVEVAR.
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# Elements separated by whitespace. In set logic terms, the function
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# does OUTVAR = LISTVAR \ REMOVEVAR.
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AC_DEFUN([gl_MANYWARN_COMPLEMENT],
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[
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gl_warn_set=
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set x $2; shift
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for gl_warn_item
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do
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case " $3 " in
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*" $gl_warn_item "*)
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;;
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*)
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gl_warn_set="$gl_warn_set $gl_warn_item"
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;;
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esac
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done
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$1=$gl_warn_set
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])
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# gl_MANYWARN_ALL_GCC(VARIABLE)
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# -----------------------------
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# Add all documented GCC warning parameters to variable VARIABLE.
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# Note that you need to test them using gl_WARN_ADD if you want to
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# make sure your gcc understands it.
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AC_DEFUN([gl_MANYWARN_ALL_GCC],
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[
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dnl First, check if -Wno-missing-field-initializers is needed.
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dnl -Wmissing-field-initializers is implied by -W, but that issues
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dnl warnings with GCC version before 4.7, for the common idiom
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dnl of initializing types on the stack to zero, using { 0, }
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AC_REQUIRE([AC_PROG_CC])
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if test -n "$GCC"; then
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dnl First, check -W -Werror -Wno-missing-field-initializers is supported
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dnl with the current $CC $CFLAGS $CPPFLAGS.
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AC_MSG_CHECKING([whether -Wno-missing-field-initializers is supported])
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AC_CACHE_VAL([gl_cv_cc_nomfi_supported], [
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gl_save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -W -Werror -Wno-missing-field-initializers"
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[]], [[]])],
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[gl_cv_cc_nomfi_supported=yes],
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[gl_cv_cc_nomfi_supported=no])
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CFLAGS="$gl_save_CFLAGS"])
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AC_MSG_RESULT([$gl_cv_cc_nomfi_supported])
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if test "$gl_cv_cc_nomfi_supported" = yes; then
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dnl Now check whether -Wno-missing-field-initializers is needed
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dnl for the { 0, } construct.
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AC_MSG_CHECKING([whether -Wno-missing-field-initializers is needed])
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AC_CACHE_VAL([gl_cv_cc_nomfi_needed], [
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gl_save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -W -Werror"
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[void f (void)
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{
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typedef struct { int a; int b; } s_t;
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s_t s1 = { 0, };
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}
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]],
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[[]])],
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[gl_cv_cc_nomfi_needed=no],
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[gl_cv_cc_nomfi_needed=yes])
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CFLAGS="$gl_save_CFLAGS"
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])
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AC_MSG_RESULT([$gl_cv_cc_nomfi_needed])
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fi
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fi
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gl_manywarn_set=
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for gl_manywarn_item in \
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-Wall \
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-W \
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-Wformat-y2k \
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-Wformat-nonliteral \
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-Wformat-security \
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-Winit-self \
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-Wmissing-include-dirs \
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-Wswitch-default \
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-Wswitch-enum \
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-Wunused \
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-Wunknown-pragmas \
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-Wstrict-aliasing \
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-Wstrict-overflow \
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-Wsystem-headers \
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-Wfloat-equal \
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-Wtraditional \
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-Wtraditional-conversion \
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-Wdeclaration-after-statement \
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-Wundef \
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-Wshadow \
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-Wunsafe-loop-optimizations \
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-Wpointer-arith \
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-Wbad-function-cast \
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-Wc++-compat \
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-Wcast-qual \
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-Wcast-align \
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-Wwrite-strings \
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-Wconversion \
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-Wsign-conversion \
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-Wlogical-op \
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-Waggregate-return \
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-Wstrict-prototypes \
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-Wold-style-definition \
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-Wmissing-prototypes \
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-Wmissing-declarations \
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-Wmissing-noreturn \
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-Wmissing-format-attribute \
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-Wpacked \
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-Wpadded \
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-Wredundant-decls \
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-Wnested-externs \
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-Wunreachable-code \
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-Winline \
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-Winvalid-pch \
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-Wlong-long \
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-Wvla \
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-Wvolatile-register-var \
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-Wdisabled-optimization \
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-Wstack-protector \
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-Woverlength-strings \
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-Wbuiltin-macro-redefined \
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-Wmudflap \
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-Wpacked-bitfield-compat \
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-Wsync-nand \
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; do
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gl_manywarn_set="$gl_manywarn_set $gl_manywarn_item"
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done
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# The following are not documented in the manual but are included in
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# output from gcc --help=warnings.
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for gl_manywarn_item in \
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-Wattributes \
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-Wcoverage-mismatch \
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-Wunused-macros \
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; do
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gl_manywarn_set="$gl_manywarn_set $gl_manywarn_item"
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done
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# More warnings from gcc 4.6.2 --help=warnings.
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for gl_manywarn_item in \
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-Wabi \
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-Wcpp \
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-Wdeprecated \
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-Wdeprecated-declarations \
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-Wdiv-by-zero \
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-Wdouble-promotion \
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-Wendif-labels \
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-Wextra \
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-Wformat-contains-nul \
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-Wformat-extra-args \
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-Wformat-zero-length \
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-Wformat=2 \
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-Wmultichar \
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-Wnormalized=nfc \
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-Woverflow \
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-Wpointer-to-int-cast \
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-Wpragmas \
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-Wsuggest-attribute=const \
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-Wsuggest-attribute=noreturn \
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-Wsuggest-attribute=pure \
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-Wtrampolines \
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; do
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gl_manywarn_set="$gl_manywarn_set $gl_manywarn_item"
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done
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# Disable the missing-field-initializers warning if needed
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if test "$gl_cv_cc_nomfi_needed" = yes; then
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gl_manywarn_set="$gl_manywarn_set -Wno-missing-field-initializers"
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fi
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$1=$gl_manywarn_set
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])
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@@ -0,0 +1,157 @@
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# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
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#
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# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# As a special exception to the GNU General Public License, if you
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# distribute this file as part of a program that contains a
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# configuration script generated by Autoconf, you may include it under
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# the same distribution terms that you use for the rest of that program.
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# PKG_PROG_PKG_CONFIG([MIN-VERSION])
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# ----------------------------------
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AC_DEFUN([PKG_PROG_PKG_CONFIG],
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[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
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m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
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AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
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if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
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AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
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fi
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if test -n "$PKG_CONFIG"; then
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_pkg_min_version=m4_default([$1], [0.9.0])
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AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
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if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
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AC_MSG_RESULT([yes])
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else
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AC_MSG_RESULT([no])
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PKG_CONFIG=""
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fi
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fi[]dnl
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])# PKG_PROG_PKG_CONFIG
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# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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#
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# Check to see whether a particular set of modules exists. Similar
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# to PKG_CHECK_MODULES(), but does not set variables or print errors.
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#
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#
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# Similar to PKG_CHECK_MODULES, make sure that the first instance of
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# this or PKG_CHECK_MODULES is called, or make sure to call
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# PKG_CHECK_EXISTS manually
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# --------------------------------------------------------------
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AC_DEFUN([PKG_CHECK_EXISTS],
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[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
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if test -n "$PKG_CONFIG" && \
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AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
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m4_ifval([$2], [$2], [:])
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m4_ifvaln([$3], [else
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$3])dnl
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fi])
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# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
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# ---------------------------------------------
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m4_define([_PKG_CONFIG],
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[if test -n "$PKG_CONFIG"; then
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if test -n "$$1"; then
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pkg_cv_[]$1="$$1"
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else
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PKG_CHECK_EXISTS([$3],
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[pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
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[pkg_failed=yes])
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fi
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else
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pkg_failed=untried
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fi[]dnl
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])# _PKG_CONFIG
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# _PKG_SHORT_ERRORS_SUPPORTED
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# -----------------------------
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AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
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[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
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if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
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_pkg_short_errors_supported=yes
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else
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_pkg_short_errors_supported=no
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fi[]dnl
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])# _PKG_SHORT_ERRORS_SUPPORTED
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# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
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# [ACTION-IF-NOT-FOUND])
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#
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#
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# Note that if there is a possibility the first call to
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# PKG_CHECK_MODULES might not happen, you should be sure to include an
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# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
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#
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#
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# --------------------------------------------------------------
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AC_DEFUN([PKG_CHECK_MODULES],
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[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
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AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
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AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
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pkg_failed=no
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AC_MSG_CHECKING([for $1])
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_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
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_PKG_CONFIG([$1][_LIBS], [libs], [$2])
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m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
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and $1[]_LIBS to avoid the need to call pkg-config.
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See the pkg-config man page for more details.])
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if test $pkg_failed = yes; then
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_PKG_SHORT_ERRORS_SUPPORTED
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if test $_pkg_short_errors_supported = yes; then
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$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
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else
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$1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
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fi
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# Put the nasty error message in config.log where it belongs
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echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
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ifelse([$4], , [AC_MSG_ERROR(dnl
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[Package requirements ($2) were not met:
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$$1_PKG_ERRORS
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Consider adjusting the PKG_CONFIG_PATH environment variable if you
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installed software in a non-standard prefix.
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_PKG_TEXT
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])],
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[AC_MSG_RESULT([no])
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$4])
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elif test $pkg_failed = untried; then
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ifelse([$4], , [AC_MSG_FAILURE(dnl
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[The pkg-config script could not be found or is too old. Make sure it
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is in your PATH or set the PKG_CONFIG environment variable to the full
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path to pkg-config.
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_PKG_TEXT
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To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
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[$4])
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else
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$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
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$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
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AC_MSG_RESULT([yes])
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ifelse([$3], , :, [$3])
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fi[]dnl
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])# PKG_CHECK_MODULES
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@@ -0,0 +1,61 @@
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# warnings.m4 serial 7
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dnl Copyright (C) 2008-2012 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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||||
dnl gives unlimited permission to copy and/or distribute it,
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||||
dnl with or without modifications, as long as this notice is preserved.
|
||||
|
||||
dnl From Simon Josefsson
|
||||
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||||
# gl_AS_VAR_APPEND(VAR, VALUE)
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# ----------------------------
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# Provide the functionality of AS_VAR_APPEND if Autoconf does not have it.
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m4_ifdef([AS_VAR_APPEND],
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[m4_copy([AS_VAR_APPEND], [gl_AS_VAR_APPEND])],
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[m4_define([gl_AS_VAR_APPEND],
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[AS_VAR_SET([$1], [AS_VAR_GET([$1])$2])])])
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# gl_COMPILER_OPTION_IF(OPTION, [IF-SUPPORTED], [IF-NOT-SUPPORTED],
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# [PROGRAM = AC_LANG_PROGRAM()])
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# -----------------------------------------------------------------
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# Check if the compiler supports OPTION when compiling PROGRAM.
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#
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# FIXME: gl_Warn must be used unquoted until we can assume Autoconf
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# 2.64 or newer.
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AC_DEFUN([gl_COMPILER_OPTION_IF],
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[AS_VAR_PUSHDEF([gl_Warn], [gl_cv_warn_[]_AC_LANG_ABBREV[]_$1])dnl
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AS_VAR_PUSHDEF([gl_Flags], [_AC_LANG_PREFIX[]FLAGS])dnl
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AC_CACHE_CHECK([whether _AC_LANG compiler handles $1], m4_defn([gl_Warn]), [
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gl_save_compiler_FLAGS="$gl_Flags"
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gl_AS_VAR_APPEND(m4_defn([gl_Flags]), [" $1"])
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AC_COMPILE_IFELSE([m4_default([$4], [AC_LANG_PROGRAM([])])],
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[AS_VAR_SET(gl_Warn, [yes])],
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[AS_VAR_SET(gl_Warn, [no])])
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gl_Flags="$gl_save_compiler_FLAGS"
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])
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||||
AS_VAR_IF(gl_Warn, [yes], [$2], [$3])
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||||
AS_VAR_POPDEF([gl_Flags])dnl
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AS_VAR_POPDEF([gl_Warn])dnl
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||||
])
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||||
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||||
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||||
# gl_WARN_ADD(OPTION, [VARIABLE = WARN_CFLAGS],
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# [PROGRAM = AC_LANG_PROGRAM()])
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# ---------------------------------------------
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||||
# Adds parameter to WARN_CFLAGS if the compiler supports it when
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||||
# compiling PROGRAM. For example, gl_WARN_ADD([-Wparentheses]).
|
||||
#
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# If VARIABLE is a variable name, AC_SUBST it.
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AC_DEFUN([gl_WARN_ADD],
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[gl_COMPILER_OPTION_IF([$1],
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||||
[gl_AS_VAR_APPEND(m4_if([$2], [], [[WARN_CFLAGS]], [[$2]]), [" $1"])],
|
||||
[],
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[$3])
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||||
m4_ifval([$2],
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||||
[AS_LITERAL_IF([$2], [AC_SUBST([$2])])],
|
||||
[AC_SUBST([WARN_CFLAGS])])dnl
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||||
])
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||||
|
||||
# Local Variables:
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||||
# mode: autoconf
|
||||
# End:
|
||||
Reference in New Issue
Block a user