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I'm trying to replace the hand-made Makefile of Project: Starfighter
with Autoconf and Automake files. This is my first time using Autoconf
and Automake, so I'm kind of learning as I go along.
I'm stuck at one part. Project: Starfighter requires SDL_Image and
SDL_Mixer from SDL2 in order to build, so I'm trying to check for them
by using AC_CHECK_LIB with functions defined by SDL_Image and
SDL_Mixer. These are my checks (you can see the attached file for the
full configure.ac):
AC_CHECK_LIB([SDL2], [SDL_Init], [], [echo "Error: SDL2 not
found." ; exit 1])
AC_CHECK_LIB([SDL2], [IMG_Load], [], [echo "Error: SDL_Image not
found." ; exit 1])
AC_CHECK_LIB([SDL2], [Mix_LoadWAV], [], [echo "Error: SDL_Mixer
not found." ; exit 1])
When I generate and run a configure script, the first check always
passes, but the second and third always fail (I checked the third by
removing the exit call from the second one). But I know I have
SDL_Image and SDL_Mixer for SDL2, because I can compile Project:
Starfighter with the hand-made Makefile (attached) just fine.
So, I suppose I have two questions:
1. Am I doing something I shouldn't be doing? (e.g. is it bad to check
a library more than once?)
2a. If so, what am I supposed to do to check for something like
SDL_Image and SDL_Mixer (where it's in the same library, but
separately packaged)?
2b. If not, how can I figure out what's wrong?
- --
Julian Marchant
https://onpon4.github.io
Protect your privacy with GnuPG:
https://emailselfdefense.fsf.org
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# -*- Autoconf -*- # Process this file with autoconf to produce a configure script. # Copyright (c) 2015 Julian Marchant <onpon4@xxxxxxxxxx> # # Permission is hereby granted, free of charge, to any person obtaining # a copy of this software and associated documentation files (the # "Software"), to deal in the Software without restriction, including # without limitation the rights to use, copy, modify, merge, publish, # distribute, sublicense, and/or sell copies of the Software, and to # permit persons to whom the Software is furnished to do so, subject to # the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. AC_PREREQ([2.69]) AC_INIT([Project: Starfighter], [1.3], [onpon4@xxxxxxxxxx]) AM_INIT_AUTOMAKE([foreign -Wall -Werror]) AC_CONFIG_SRCDIR([src/Starfighter.cpp]) AC_CONFIG_HEADERS([config.h]) # Checks for programs. AC_PROG_CXX AC_PROG_INSTALL # Checks for libraries. AC_CHECK_LIB([SDL2], [SDL_Init], [], [echo "Error: SDL2 not found." ; exit 1]) AC_CHECK_LIB([SDL2], [IMG_Load], [], [echo "Error: SDL_Image not found." ; exit 1]) AC_CHECK_LIB([SDL2], [Mix_LoadWAV], [], [echo "Error: SDL_Mixer not found." ; exit 1]) # Checks for header files. AC_CHECK_HEADERS([stdlib.h string.h time.h math.h sys/types/h sys/stat.h unistd.h]) # Checks for typedefs, structures, and compiler characteristics. AC_CHECK_HEADER_STDBOOL AC_C_INLINE AC_TYPE_INT16_T AC_TYPE_UINT16_T AC_TYPE_UINT32_T AC_TYPE_UINT8_T # Checks for library functions. AC_FUNC_MALLOC AC_CHECK_FUNCS([atexit mkdir]) AC_CONFIG_FILES([ Makefile src/Makefile ]) AC_OUTPUT
CXXFLAGS ?= -O2 -Wall -g CXXFLAGS += `pkg-config --cflags sdl2 SDL2_image SDL2_mixer` -DLINUX -lSDL2 LIBS = `pkg-config --libs sdl2 SDL2_image SDL2_mixer` OBJS = ai.o aliens.o audio.o bullets.o cargo.o collectable.o comms.o debris.o events.o explosions.o game.o globals.o graphics.o init.o intermission.o loadSave.o messages.o misc.o missions.o player.o resources.o script.o shop.o Starfighter.o title.o weapons.o VERSION = 1.3-dev PROG = starfighter DOCS = docs/* DATA = data gfx sound DATAFILES = data/* gfx/* sound/* PREFIX ?= /usr BINDIR ?= $(PREFIX)/games/ DATADIR ?= $(PREFIX)/share/games/parallelrealities/ DOCDIR ?= $(PREFIX)/share/doc/$(PROG)/ # top-level rule to create the program. ALL = $(PROG) all: $(ALL) # compiling other source files. %.o: src/%.cpp src/*.h $(CXX) $(CXXFLAGS) -c -DVERSION=\"$(VERSION)\" -DDATADIR=\"$(DATADIR)\" $< # linking the program. $(PROG): $(OBJS) $(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) -o $(PROG) $(LIBS) # cleaning everything that can be automatically recreated with "make". clean: $(RM) $(OBJS) $(ALL) # install install: $(ALL) mkdir -p $(DESTDIR)$(BINDIR) mkdir -p $(DESTDIR)$(DATADIR) mkdir -p $(DESTDIR)$(DOCDIR) install -m 755 $(PROG) $(DESTDIR)$(BINDIR)$(PROG) cp -pr $(DATA) $(DESTDIR)$(DATADIR) cp -p $(DOCS) $(DESTDIR)$(DOCDIR) optimise: advpng -z gfx/*.png jpegoptim --strip-all gfx/*.jpg dist: rm -rf starfighter-$(VERSION) mkdir starfighter-$(VERSION) cp --parents -lt starfighter-$(VERSION) `git ls-files` git log >starfighter-$(VERSION)/ChangeLog tar czf starfighter-$(VERSION).tar.gz starfighter-$(VERSION) rm -rf starfighter-$(VERSION) .PHONY: all clean install optimise dist
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