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# Copyright (C) 1993, 1997-1999, 2002-2003, 2006, 2009, 2011-2013, 2015, 2018
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
AC_PREREQ([2.65])
AC_INIT([GNU patch],
m4_esyscmd([build-aux/git-version-gen .tarball-version]),
[bug-patch@gnu.org])
AC_CONFIG_SRCDIR([src/patch.c])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AC_ARG_ENABLE([merge],
[AS_HELP_STRING([--disable-merge],
[disable support for merging])])
AM_CONDITIONAL([ENABLE_MERGE], [test "$enableval" != no])
AM_CONDITIONAL([ALPHA_VERSION],
[[echo "$PACKAGE_VERSION" | grep -- "-[0-9a-f][0-9a-f]*\\(-dirty\\)\\?$" >/dev/null]])
AM_INIT_AUTOMAKE([1.11.2 -Wall gnu dist-bzip2 dist-xz color-tests parallel-tests])
AM_SILENT_RULES([yes])
AC_CONFIG_HEADERS([config.h:config.hin])
AC_PROG_CC
AC_PROG_CC_STDC
gl_EARLY
gl_USE_SYSTEM_EXTENSIONS
AC_HEADER_STDC
gl_INIT
AM_PROG_AR
AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--enable-gcc-warnings],
[turn on lots of GCC warnings (for developers)])],
[case $enableval in
yes|no) ;;
*) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
esac
gl_gcc_warnings=$enableval],
[gl_gcc_warnings=no]
)
if test "$gl_gcc_warnings" = yes; then
gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
AC_SUBST([WERROR_CFLAGS])
nw=
# This, $nw, is the list of warnings we disable.
nw="$nw -Wdeclaration-after-statement" # too useful to forbid
nw="$nw -Waggregate-return" # anachronistic
nw="$nw -Wlong-long" # C90 is anachronistic (lib/gethrxtime.h)
nw="$nw -Wc++-compat" # We don't care about C++ compilers
nw="$nw -Wundef" # Warns on '#if GNULIB_FOO' etc in gnulib
nw="$nw -Wtraditional" # Warns on #elif which we use often
nw="$nw -Wcast-qual" # Too many warnings for now
nw="$nw -Wconversion" # Too many warnings for now
nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
nw="$nw -Wsign-conversion" # Too many warnings for now
nw="$nw -Wtraditional-conversion" # Too many warnings for now
nw="$nw -Wunreachable-code" # Too many warnings for now
nw="$nw -Wpadded" # Our structs are not padded
nw="$nw -Wredundant-decls" # openat.h declares e.g., mkdirat
nw="$nw -Wlogical-op" # any use of fwrite provokes this
nw="$nw -Wformat-nonliteral" # who.c and pinky.c strftime uses
nw="$nw -Wvla" # warnings in gettext.h
nw="$nw -Wnested-externs" # use of XARGMATCH/verify_function__
nw="$nw -Wswitch-enum" # Too many warnings for now
nw="$nw -Wswitch-default" # Too many warnings for now
nw="$nw -Wstack-protector" # not worth working around
nw="$nw -Wmissing-format-attribute" # not worth working around in patch
nw="$nw -Wsuggest-attribute=format" # warns about util.c
# things to fix soon:
nw="$nw -Wshadow"
nw="$nw -Wstrict-overflow"
nw="$nw -Wunsafe-loop-optimizations"
# nw="$nw -Wfloat-equal" # sort.c, seq.c
# nw="$nw -Wmissing-format-attribute" # copy.c
# nw="$nw -Winline" # system.h's readdir_ignoring_dot_and_dotdot
# ?? -Wstrict-overflow
gl_MANYWARN_ALL_GCC([ws])
gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
for w in $ws; do
gl_WARN_ADD([$w])
done
gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
# In spite of excluding -Wlogical-op above, it is enabled, as of
# gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
gl_WARN_ADD([-Wno-logical-op])
gl_WARN_ADD([-fdiagnostics-show-option])
gl_WARN_ADD([-funit-at-a-time])
gl_WARN_ADD([-Wno-format-nonliteral])
AC_SUBST([WARN_CFLAGS])
AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
AC_DEFINE([_FORTIFY_SOURCE], [2],
[enable compile-time and run-time bounds-checking, and some warnings])
AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
# We use a slightly smaller set of warning options for lib/.
# Remove the following and save the result in GNULIB_WARN_CFLAGS.
nw=
nw="$nw -Wuninitialized"
nw="$nw -Wunused-macros"
nw="$nw -Wmissing-prototypes"
nw="$nw -Wold-style-definition"
gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
AC_SUBST([GNULIB_WARN_CFLAGS])
# For gnulib-tests, the set is slightly smaller still.
nw=
nw="$nw -Wstrict-prototypes"
gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
[$GNULIB_WARN_CFLAGS], [$nw])
AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
fi
AC_TYPE_MODE_T
AC_TYPE_OFF_T
gl_SIZE_MAX
gl_FUNC_XATTR
AC_CHECK_FUNCS(geteuid getuid raise sigaction sigprocmask sigsetmask)
AC_FUNC_SETMODE_DOS
AC_PATH_PROG([ED], [ed], [ed])
AC_DEFINE_UNQUOTED([EDITOR_PROGRAM], ["$ED"], [Name of editor program.])
AC_CONFIG_FILES([
Makefile
lib/Makefile
src/Makefile
tests/Makefile
])
AC_OUTPUT
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