Markus Armbruster
23373d01d9
When AC_PROG_CC detects GCC, Make.mk adds a bunch of flags to CFLAGS. Works only for flags that any version of gcc in use accepts. Instead, make configure add the flags that actually work to CFLAGS. This will let us add flags that work only for some compilers. The new autoconf macros are from autoconf-archive v2015.02.24. Unfortunately, AX_APPEND_COMPILE_FLAGS doesn't work reliably for -Wno-*: gcc complains about unknown -Wno-foo only when other diagnostics are being produced. Test -Wfoo instead of -Wno-foo, and rename to MY_APPEND_COMPILE_FLAGS. Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
182 lines
4.9 KiB
Text
182 lines
4.9 KiB
Text
#
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# Empire - A multi-player, client/server Internet based war game.
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# Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
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# Ken Stevens, Steve McClure, Markus Armbruster
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#
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# Empire 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 3 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,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU 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, see <http://www.gnu.org/licenses/>.
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#
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# ---
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#
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# See files README, COPYING and CREDITS in the root of the source
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# tree for related information and legal notices. It is expected
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# that future projects/authors will amend these files as needed.
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#
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# ---
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#
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# configure.ac: Autoconf input file
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#
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# Known contributors to this file:
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# Markus Armbruster, 2005-2015
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#
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# Process this file with autoconf to produce a configure script.
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# Autoconf makes checking for and programming around assorted ancient
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# crap relatively painless. But why bother? Just rely on C89 and
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# POSIX, and when something breaks on some oddball machine, see
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# whether it's worth fixing.
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AC_PREREQ(2.64)
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AC_INIT([Wolfpack Empire], [4.3.34], [wolfpack@wolfpackempire.com], [empire],
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[http://www.wolfpackempire.com/])
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AC_CONFIG_SRCDIR([include/combat.h])
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AC_CONFIG_AUX_DIR([build-aux])
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AC_CONFIG_MACRO_DIR([m4])
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AC_CONFIG_HEADERS([config.h])
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### Checks for programs
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AC_PROG_AWK
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AC_PROG_INSTALL
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AC_PROG_RANLIB
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AC_PROG_CC
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AM_PROG_CC_C_O
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# Private automake macro, tsk, tsk, tsk...
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_AM_DEPENDENCIES(CC)
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AC_ARG_VAR(NROFF, [nroff command])
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AC_CHECK_PROG(NROFF, groff, [GROFF_NO_SGR= groff -Tascii -U], nroff)
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# not really a check for a program, but close enough
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if test -d $srcdir/.git; then revctrl=git
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else revctrl=
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fi
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AC_SUBST(revctrl,$revctrl)
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# Not a program, but need to check this early
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MY_WINDOWS_API
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### Checks for libraries
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AX_PTHREAD
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LIBS_util="$LIBS"
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LIBS="$LIBS_SOCKETS $LIBS"
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AX_LIB_SOCKET_NSL
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LIBS_server="$LIBS"
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### Checks for header files
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### Checks for typedefs, structures, and compiler characteristics
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# Enable useful warnings
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# clang needs to be tested with -Werror=unknown-warning-option
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AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],
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[cflags_test="-Werror=unknown-warning-option"],
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[cflags_test=""])
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MY_APPEND_COMPILE_FLAGS([-Wall -Wextra dnl
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-Wmissing-prototypes dnl
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-Wnested-externs dnl
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-Wpointer-arith dnl
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-Wredundant-decls dnl
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-Wstrict-prototypes dnl
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-Wno-unused-parameter dnl
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], [], [$cflags_test])
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# Our carg() conflicts with libm's TODO clean that up
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MY_APPEND_COMPILE_FLAGS([-fno-builtin-carg])
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# No multiple definitions of uninitialized global variables
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MY_APPEND_COMPILE_FLAGS([-fno-common])
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### Checks for library functions
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AC_CHECK_FUNCS(getaddrinfo getpass)
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MY_FUNC_MAKECONTEXT
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### Site configuration
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# Can't be bothered to make MAXNOC configurable right now.
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AC_DEFINE([MAXNOC], [99],
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[The maximum number of countries])
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AC_ARG_VAR([EMPIREHOST], [Default host (client only) [127.0.0.1]])
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test "$EMPIREHOST" || EMPIREHOST=127.0.0.1
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AC_ARG_VAR([EMPIREPORT], [Default port (client and server) [6665]])
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test "$EMPIREPORT" || EMPIREPORT=6665
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AC_ARG_WITH([pthread],
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AS_HELP_STRING([--with-pthread],
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[use POSIX threads]))
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# Select thread package
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empthread=
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if test "$with_pthread" != no; then
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if test "$ax_pthread_ok" = yes; then
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empthread=POSIX
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fi
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fi
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if test -z "$with_pthread" || test "$with_pthread" = no; then
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if test "$ac_cv_func_makecontext" = yes; then
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empthread=LWP
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fi
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if test $Windows_API = yes; then
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empthread=Windows
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fi
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fi
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if test -z "$empthread"; then
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AC_MSG_ERROR([No usable thread package found])
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fi
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AC_SUBST(empthread)
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case $empthread in
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LWP) AC_DEFINE([EMPTH_LWP], 1, [Define to use LWP threads]) ;;
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POSIX) AC_DEFINE([EMPTH_POSIX], 1, [Define to use POSIX threads]) ;;
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Windows) AC_DEFINE([EMPTH_W32], 1, [Define to use Windows threads]) ;;
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esac
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MY_WITH_TERMINFO
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LIBS_client="$LIBS"
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### Output
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LIBS="$LIBS_util"
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AC_SUBST(LIBS_client)
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AC_SUBST(LIBS_server)
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AC_CONFIG_FILES([GNUmakefile])
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AC_CONFIG_COMMANDS([stamp-h],
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[case $revctrl in
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git)
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mkdir -p `cd $srcdir && git ls-files \
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| sed -n 's,/@<:@^/@:>@*$,,gp' | uniq`
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;;
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*)
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mkdir -p `sed s/.*=// <$srcdir/sources.mk | tr ' ' '\012' \
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| sed -n '/\//s,/@<:@^/@:>@*$,,gp'| uniq`
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esac
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mkdir -p info.html info.nr lib
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touch stamp-h],
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[revctrl=$revctrl])
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AC_OUTPUT
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AC_MSG_NOTICE([])
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AC_MSG_NOTICE([-= Configuration summary =-])
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AC_MSG_NOTICE([Thread package: $empthread])
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AC_MSG_NOTICE([ terminfo: $with_terminfo])
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AC_MSG_NOTICE([ EMPIREHOST: $EMPIREHOST])
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AC_MSG_NOTICE([ EMPIREPORT: $EMPIREPORT])
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