# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1385292644 -7200
# Node ID b4c9a24c946ee1881d88a04c8973ed2e13ed25b5
# Parent  25b911c7c35c1aedcd1e670e35c83382a9e6ca3a
wrote an awesome configure script
added "main" 3d engine source file with global init/cleanup

diff -r 25b911c7c35c -r b4c9a24c946e Makefile
--- a/Makefile	Mon Nov 18 04:10:19 2013 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,84 +0,0 @@
-PREFIX = /usr/local
-
-csrc = $(wildcard src/*.c)
-ccsrc = $(wildcard src/*.cc)
-obj = $(csrc:.c=.o) $(ccsrc:.cc=.o)
-dep = $(obj:.o=.d)
-name = goat3dgfx
-lib_a = lib$(name).a
-
-so_major = 0
-so_minor = 1
-
-ifeq ($(shell uname -r), Darwin)
-	libgl = -framework OpenGL -framework GLUT -lGLEW
-
-	lib_so = lib$(name).dylib
-	shared = -dynamiclib
-else
-	libgl = -lGL -lGLU -lglut -lGLEW
-
-	lib_so = lib$(name).so.$(so_major).$(so_minor)
-	soname = lib$(name).so.$(so_major)
-	devlink = lib$(name).so
-	shared = -shared -Wl,-soname=$(soname)
-	pic = -fPIC
-endif
-
-dbg = -g
-warn = -Wall
-
-libs_ldflags = -limago -lanim -lpsys -lvmath
-
-CFLAGS = -pedantic $(warn) $(dbg) $(pic) $(opt) $(inc) $(libs_cflags)
-CXXFLAGS =  $(CFLAGS)
-LDFLAGS = $(libgl) $(libs_ldflags)
-
-.PHONY: all
-all: $(lib_so) $(lib_a)
-
-$(lib_a): $(obj)
-	$(AR) rcs $@ $(obj)
-
-$(lib_so): $(obj)
-	$(CXX) $(shared) -o $@ $(obj) $(LDFLAGS)
-
--include $(dep)
-
-%.d: %.c
-	@$(CPP) $(CFLAGS) $< -MM -MT $(@:.d=.o) >$@
-
-%.d: %.cc
-	@$(CPP) $(CXXFLAGS) $< -MM -MT $(@:.d=.o) >$@
-
-.PHONY: clean
-clean:
-	rm -f $(obj) $(lib_a) $(lib_so)
-
-.PHONY: cleandep
-cleandep:
-	rm -f $(dep)
-
-.PHONY: install
-install: $(lib_so) $(lib_a)
-	mkdir -p $(DESTDIR)$(PREFIX)/lib $(DESTDIR)$(PREFIX)/include/goat3dgfx
-	cp src/*.h src/*.inl $(DESTDIR)$(PREFIX)/include/goat3dgfx/
-	cp $(lib_a) $(DESTDIR)$(PREFIX)/lib/$(lib_a)
-	cp $(lib_so) $(DESTDIR)$(PREFIX)/lib/$(lib_so)
-	[ -n "$(devlink)" ] && \
-		cd $(DESTDIR)$(PREFIX)/lib && \
-		rm -f $(soname) $(devlink) && \
-		ln -s $(lib_so) $(soname) && \
-		ln -s $(soname) $(devlink) || \
-		true
-
-.PHONY: uninstall
-uninstall:
-	rm -f $(DESTDIR)$(PREFIX)/include/goat3dgfx/*
-	rmdir $(DESTDIR)$(PREFIX)/include/goat3dgfx
-	rm -f $(DESTDIR)$(PREFIX)/lib/$(lib_so)
-	rm -f $(DESTDIR)$(PREFIX)/lib/$(lib_a)
-	[ -n "$(devlink)" ] && \
-		rm -f $(DESTDIR)$(PREFIX)/lib/$(soname) && \
-		rm -f $(DESTDIR)$(PREFIX)/lib/$(devlink) || \
-		true
diff -r 25b911c7c35c -r b4c9a24c946e Makefile.in
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Makefile.in	Sun Nov 24 13:30:44 2013 +0200
@@ -0,0 +1,78 @@
+
+csrc = $(wildcard src/*.c)
+ccsrc = $(wildcard src/*.cc)
+obj = $(csrc:.c=.o) $(ccsrc:.cc=.o)
+dep = $(obj:.o=.d)
+name = goat3dgfx
+lib_a = lib$(name).a
+
+so_major = 0
+so_minor = 1
+
+ifeq ($(shell uname -r), Darwin)
+	lib_so = lib$(name).dylib
+	shared = -dynamiclib
+else
+	lib_so = lib$(name).so.$(so_major).$(so_minor)
+	soname = lib$(name).so.$(so_major)
+	devlink = lib$(name).so
+	shared = -shared -Wl,-soname=$(soname)
+	pic = -fPIC
+endif
+
+warn = -Wall
+
+libs_ldflags = -limago -lanim -lpsys -lvmath
+
+CFLAGS = -pedantic $(warn) $(dbg) $(pic) $(opt) $(inc) $(cfg_cflags) $(libs_cflags)
+CXXFLAGS =  $(CFLAGS)
+LDFLAGS = $(cfg_ldflags) $(libs_ldflags)
+
+.PHONY: all
+all: $(lib_so) $(lib_a)
+
+$(lib_a): $(obj)
+	$(AR) rcs $@ $(obj)
+
+$(lib_so): $(obj)
+	$(CXX) $(shared) -o $@ $(obj) $(LDFLAGS)
+
+-include $(dep)
+
+%.d: %.c
+	@$(CPP) $(CFLAGS) $< -MM -MT $(@:.d=.o) >$@
+
+%.d: %.cc
+	@$(CPP) $(CXXFLAGS) $< -MM -MT $(@:.d=.o) >$@
+
+.PHONY: clean
+clean:
+	rm -f $(obj) $(lib_a) $(lib_so)
+
+.PHONY: cleandep
+cleandep:
+	rm -f $(dep)
+
+.PHONY: install
+install: $(lib_so) $(lib_a)
+	mkdir -p $(DESTDIR)$(PREFIX)/lib $(DESTDIR)$(PREFIX)/include/goat3dgfx
+	cp src/*.h src/*.inl $(DESTDIR)$(PREFIX)/include/goat3dgfx/
+	cp $(lib_a) $(DESTDIR)$(PREFIX)/lib/$(lib_a)
+	cp $(lib_so) $(DESTDIR)$(PREFIX)/lib/$(lib_so)
+	[ -n "$(devlink)" ] && \
+		cd $(DESTDIR)$(PREFIX)/lib && \
+		rm -f $(soname) $(devlink) && \
+		ln -s $(lib_so) $(soname) && \
+		ln -s $(soname) $(devlink) || \
+		true
+
+.PHONY: uninstall
+uninstall:
+	rm -f $(DESTDIR)$(PREFIX)/include/goat3dgfx/*
+	rmdir $(DESTDIR)$(PREFIX)/include/goat3dgfx
+	rm -f $(DESTDIR)$(PREFIX)/lib/$(lib_so)
+	rm -f $(DESTDIR)$(PREFIX)/lib/$(lib_a)
+	[ -n "$(devlink)" ] && \
+		rm -f $(DESTDIR)$(PREFIX)/lib/$(soname) && \
+		rm -f $(DESTDIR)$(PREFIX)/lib/$(devlink) || \
+		true
diff -r 25b911c7c35c -r b4c9a24c946e configure
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/configure	Sun Nov 24 13:30:44 2013 +0200
@@ -0,0 +1,211 @@
+#!/bin/sh
+
+prefix=/usr/local
+opt=false
+dbg=true
+vr=true
+
+for arg; do
+	case "$arg" in
+	--prefix=*)
+		value=`echo $arg | sed 's/--prefix=//'`
+		prefix=${value:-$prefix}
+		;;
+
+	--enable-opt)
+		opt=true;;
+	--disable-opt)
+		opt=false;;
+
+	--enable-debug)
+		dbg=true;;
+	--disable-debug)
+		dbg=false;;
+
+	--enable-vr)
+		vr=true;;
+	--disable-vr)
+		vr=false;;
+
+	--help)
+		echo 'usage: ./configure [options]'
+		echo 'options:'
+		echo '  --prefix=<path>: installation path (default: /usr/local)'
+		echo '  --enable-<foo>/--disable-<foo>: enable/disable features where foo is:'
+		echo '    opt: speed optimizations'
+		echo '    dbg: debugging symbols'
+		echo '    vr: support for virtual reality'
+		echo 'all invalid options are silently ignored'
+		exit 0
+		;;
+	esac
+done
+
+begin_emit()
+{
+	emit_file=$1
+	cat /dev/null >$1
+}
+
+emit()
+{
+	echo $* >>$emit_file
+}
+
+
+tmpfile_prefix=/tmp/goat3dgfx_configure-
+build_log=/tmp/goat3dgfx_configure.log
+
+check_ovr()
+{
+	tmpfile_bin=${tmpfile_prefix}check_ovr
+	tmpfile_src=${tmpfile_bin}.cc
+
+	begin_emit $tmpfile_src
+	emit '#include <OVR.h>'
+	emit 'int main() {}'
+
+	echo -n 'checking for LibOVR ... '
+
+	if ! c++ $CFLAGS -o $tmpfile_bin $tmpfile_src -lovr >$build_log 2>&1; then
+		echo not found!
+		exit 1
+	else
+		echo ok
+	fi
+
+	LDFLAGS="$LDFLAGS -lovr"
+	rm -f $tmpfile_bin $tmpfile_src
+}
+
+check_glew()
+{
+	tmpfile_bin=${tmpfile_prefix}check_glew
+	tmpfile_src=${tmpfile_bin}.c
+
+	begin_emit $tmpfile_src
+	emit '#include <GL/glew.h>'
+	emit 'int main() { return 0; }'
+
+	echo -n 'checking for GLEW ... '
+
+	if ! cc $CFLAGS -o $tmpfile_bin $tmpfile_src -lGLEW >$build_log 2>&1; then
+		echo not found!
+		exit 1
+	else
+		echo ok
+	fi
+
+	LDFLAGS="$LDFLAGS -lGLEW"
+	rm -f $tmpfile_bin $tmpfile_src
+}
+
+check_opengl()
+{
+	tmpfile_bin=${tmpfile_prefix}check_gl
+	tmpfile_src=${tmpfile_bin}.c
+
+	echo -n 'checking for OpenGL ... '
+
+	begin_emit $tmpfile_src
+	if [ "`uname -s`" = Darwin ]; then
+		emit '#include <OpenGL/gl.h>'
+
+		libgl='-framework OpenGL'
+	else
+		emit '#include <GL/gl.h>'
+
+		if uname -s | grep MINGW; then
+			libgl='-lopengl32 -lglu32'
+		else
+			libgl='-lGL -lGLU'
+		fi
+	fi
+	emit 'int main() { return 0; }'
+
+	if ! cc $CFLAGS -o $tmpfile_bin $tmpfile_src $libgl >$build_log 2>&1; then
+		echo not found!
+		exit 1
+	else
+		echo ok
+	fi
+
+	LDFLAGS="$LDFLAGS $libgl"
+	rm -f $tmpfile_bin $tmpfile_src
+}
+
+check_glut()
+{
+	tmpfile_bin=${tmpfile_prefix}check_glut
+	tmpfile_src=${tmpfile_bin}.c
+
+	echo -n 'checking for GLUT ... '
+
+	begin_emit $tmpfile_src
+	if [ "`uname -s`" = Darwin ]; then
+		emit '#include <GLUT/glut.h>'
+
+		libglut='-framework GLUT'
+	else
+		emit '#include <GL/glut.h>'
+
+		if uname -s | grep MINGW; then
+			libglut='-lglut32'
+		else
+			libglut='-lglut'
+		fi
+	fi
+	emit 'int main() { return 0; }'
+
+	if ! cc $CFLAGS -o $tmpfile_bin $tmpfile_src $libglut >$build_log 2>&1; then
+		echo not found!
+		exit 1
+	else
+		echo ok
+	fi
+
+	LDFLAGS="$LDFLAGS $libglut"
+	rm -f $tmpfile_bin $tmpfile_src
+}
+
+gen_config()
+{
+	echo "generating: src/config.h ..."
+	begin_emit src/config.h
+
+	emit '#ifndef GOAT3DGFX_CONFIG_H_'
+	emit '#define GOAT3DGFX_CONFIG_H_'
+
+	if $vr; then
+		emit '#define USE_VR'
+		emit '#define USE_LIBOVR'
+	else
+		emit '#undef USE_VR'
+	fi
+
+	emit '#endif /* GOAT3DGFX_CONFIG_H_ */'
+}
+
+
+gen_makefile()
+{
+	echo "generating: Makefile ..."
+	begin_emit Makefile
+
+	emit '# this makefile is automatically generated. do not edit!'
+	emit "PREFIX = $prefix"
+	if $opt; then emit 'opt = -O3'; fi
+	if $dbg; then emit 'dbg = -g'; fi
+	emit "cfg_cflags = $CFLAGS"
+	emit "cfg_ldflags = $LDFLAGS"
+
+	cat Makefile.in >>Makefile
+}
+
+check_opengl
+check_glut
+check_glew
+if $vr; then check_ovr; fi
+
+gen_makefile
+gen_config
diff -r 25b911c7c35c -r b4c9a24c946e src/goat3dgfx.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/goat3dgfx.cc	Sun Nov 24 13:30:44 2013 +0200
@@ -0,0 +1,14 @@
+#include "goat3dgfx.h"
+
+bool init_goat_graphics()
+{
+	log_info("initializing goat3d graphics\n");
+
+	glewInit();
+
+	return true;
+}
+
+void shutdown_goat_graphics()
+{
+}
diff -r 25b911c7c35c -r b4c9a24c946e src/goat3dgfx.h
--- a/src/goat3dgfx.h	Mon Nov 18 04:10:19 2013 +0200
+++ b/src/goat3dgfx.h	Sun Nov 24 13:30:44 2013 +0200
@@ -27,4 +27,7 @@
 #include <goat3dgfx/unistate.h>
 #include <goat3dgfx/xform_node.h>
 
+bool init_goat_graphics();
+void shutdown_goat_graphics();
+
 #endif	// GOAT3DGFX_H_