build: improvements when building as a subproject

bootstrap

@@ -56,7 +56,6 @@ fi
 auxdir="`sed -ne 's/^[ \t]*A._CONFIG_AUX_DIR *([[ ]*\([^] )]*\).*/\1/p' $conffile`"
 pkgconfig="`grep '^[ \t]*PKG_PROG_PKG_CONFIG' $conffile >/dev/null 2>&1 && echo yes || echo no`"
 libtool="`grep '^[ \t]*A._PROG_LIBTOOL' $conffile >/dev/null 2>&1 && echo yes || echo no`"
-header="`grep '^[ \t]*A._CONFIG_HEADER' $conffile >/dev/null 2>&1 && echo yes || echo no`"
 makefile="`[ -f Makefile.am ] && echo yes || echo no`"
 aclocalflags="`sed -ne 's/^[ \t]*ACLOCAL_AMFLAGS[ \t]*=//p' Makefile.am 2>/dev/null || :`"
 
@@ -151,9 +150,7 @@ fi
 
 aclocal${amvers} ${aclocalflags}
 autoconf${acvers}
-if test "$header" = "yes"; then
-  autoheader${acvers}
-fi
+autoheader${acvers}
 if test "$makefile" = "yes"; then
   #add --include-deps if you want to bootstrap with any other compiler than gcc
   #automake${amvers} --add-missing --copy --include-deps

build/autotools/m4/lol-conf.m4

@@ -35,37 +35,6 @@ AC_LANG_POP(C++)
 ]) # LOL_AC_INIT
 
 
-# LOL_AC_SUBST()
-# ---------------------
-AC_DEFUN([LOL_AC_SUBST], [
-
-dnl  How to use the Lol Engine outside this tree
-LOL_CFLAGS="$LOL_CFLAGS $SDL_CFLAGS $GL_CFLAGS $EGL_CFLAGS $LIBPNG_CFLAGS"
-LOL_LIBS="$LOL_LIBS $SDL_LIBS $GL_LIBS $EGL_LIBS $LIBPNG_LIBS $D3D_LIBS"
-LOL_DEPS="${LOL_DEPS} \$(lol_builddir)/src/liblol-core.a"
-LOL_DEPS="${LOL_DEPS} \$(lol_builddir)/src/3rdparty/liblol-bullet.a"
-LOL_DEPS="${LOL_DEPS} \$(lol_builddir)/src/3rdparty/liblol-lua.a"
-
-dnl  How to use the Lol Engine inside this tree
-AM_CPPFLAGS="${AM_CPPFLAGS} -I\$(lol_srcdir)/src"
-AM_CPPFLAGS="${AM_CPPFLAGS} -DLOL_CONFIG_SOURCESUBDIR=\\\"\$(subdir)\\\""
-AM_CPPFLAGS="${AM_CPPFLAGS} ${LOL_CFLAGS}"
-AM_LDFLAGS="${AM_LDFLAGS} ${LOL_DEPS}"
-AM_LDFLAGS="${AM_LDFLAGS} ${LOL_LIBS}"
-
-dnl  Extra flags
-AC_SUBST(LOL_CFLAGS)
-AC_SUBST(LOL_LIBS)
-AC_SUBST(LOL_DEPS)
-
-AC_SUBST(AM_CFLAGS)
-AC_SUBST(AM_CPPFLAGS)
-AC_SUBST(AM_CXXFLAGS)
-AC_SUBST(AM_LDFLAGS)
-
-]) # LOL_AC_SUBST
-
-
 # LOL_AC_CHECK()
 # ---------------------
 AC_DEFUN([LOL_AC_CHECK], [
@@ -269,3 +238,34 @@ LOL_TRY_CXXFLAGS(-Wno-psabi, [AM_CPPFLAGS="${AM_CPPFLAGS} -Wno-psabi"])
 
 ]) # LOL_AC_CHECK
 
+
+# LOL_AC_FINI()
+# ---------------------
+AC_DEFUN([LOL_AC_FINI], [
+
+dnl  How to use the Lol Engine outside this tree
+LOL_CFLAGS="$LOL_CFLAGS $SDL_CFLAGS $GL_CFLAGS $EGL_CFLAGS $LIBPNG_CFLAGS"
+LOL_LIBS="$LOL_LIBS $SDL_LIBS $GL_LIBS $EGL_LIBS $LIBPNG_LIBS $D3D_LIBS"
+LOL_DEPS="${LOL_DEPS} \$(lol_builddir)/src/liblol-core.a"
+LOL_DEPS="${LOL_DEPS} \$(lol_builddir)/src/3rdparty/liblol-bullet.a"
+LOL_DEPS="${LOL_DEPS} \$(lol_builddir)/src/3rdparty/liblol-lua.a"
+
+dnl  How to use the Lol Engine inside this tree
+AM_CPPFLAGS="${AM_CPPFLAGS} -I\$(lol_srcdir)/src"
+AM_CPPFLAGS="${AM_CPPFLAGS} -DLOL_CONFIG_SOURCESUBDIR=\\\"\$(subdir)\\\""
+AM_CPPFLAGS="${AM_CPPFLAGS} ${LOL_CFLAGS}"
+AM_LDFLAGS="${AM_LDFLAGS} ${LOL_DEPS}"
+AM_LDFLAGS="${AM_LDFLAGS} ${LOL_LIBS}"
+
+dnl  Extra flags
+AC_SUBST(LOL_CFLAGS)
+AC_SUBST(LOL_LIBS)
+AC_SUBST(LOL_DEPS)
+
+AC_SUBST(AM_CFLAGS)
+AC_SUBST(AM_CPPFLAGS)
+AC_SUBST(AM_CXXFLAGS)
+AC_SUBST(AM_LDFLAGS)
+
+]) # LOL_AC_FINI
+

build/autotools/m4/lol-subproject.m4

@@ -17,10 +17,10 @@ AC_DEFUN([LOL_AC_SUBPROJECT], [
 
 dnl
 dnl  Build and configure Lol Engine before our repository
-dnl  Ensure $lol_srcdir and $lol_builddir are properly set up
+dnl  Ensure $lol_srcdir and $lol_builddir are properly set
 dnl
 
-ac_configure_args="${ac_configure_args} --disable-test --disable-doc --disable-tutorial --disable-samples --disable-tools"
+ac_configure_args="${ac_configure_args} --enable-subproject"
 AC_CONFIG_SUBDIRS([lol])
 AC_SUBST(lol_srcdir, '${top_srcdir}/lol')
 AC_SUBST(lol_builddir, '${top_builddir}/lol')
@@ -31,7 +31,7 @@ dnl
 
 LOL_AC_INIT()
 LOL_AC_CHECK()
-LOL_AC_SUBST()
+LOL_AC_FINI()
 
 ]) # LOL_AC_SUBPROJECT
 

configure.ac

@@ -27,8 +27,6 @@ AC_SUBST(LOLREMEZ_VERSION)
 AC_SUBST(lol_srcdir, '${top_srcdir}')
 AC_SUBST(lol_builddir, '${top_builddir}')
 
-AC_CONFIG_HEADER(config.h)
-
 AM_PROG_CC_C_O
 AC_PROG_CPP
 AC_PROG_CXX
@@ -81,6 +79,9 @@ AC_ARG_ENABLE(release,
 AC_ARG_ENABLE(experimental,
   [  --enable-experimental   experimental build (default no)])
 
+AC_ARG_ENABLE(subproject,
+  [  --enable-subproject     build as a subproject (default no)])
+
 AC_ARG_ENABLE(test,
   [  --enable-test           build test suite (default yes)])
 AC_ARG_ENABLE(tools,
@@ -93,6 +94,23 @@ AC_ARG_ENABLE(doc,
   [  --enable-doc            build documentation (needs doxygen and LaTeX)])
 
 
+dnl  Subproject builds
+if test "${enable_subproject}" = "yes"; then
+  AC_MSG_CHECKING(for a config-lol.h file in the parent project)
+  if test -f "../config-lol.h"; then
+    AC_MSG_RESULT(yes)
+    AC_DEFINE(HAVE_CONFIG_LOL_H, 1, Define to if parent project provides config-lol.h)
+    AH_BOTTOM([
+#if HAVE_CONFIG_LOL_H
+#include "../config-lol.h"
+#endif
+])
+  else
+    AC_MSG_RESULT(no)
+  fi
+fi
+
+
 dnl  Common C headers
 AC_CHECK_HEADERS(stdio.h stdarg.h inttypes.h stdint.h math.h)
 AC_CHECK_HEADERS(fastmath.h unistd.h io.h)
@@ -145,7 +163,7 @@ fi
 dnl  Build documentation?
 DOXYGEN="no"
 LATEX="no"
-if test "${enable_doc}" != "no"; then
+if test "${enable_doc}" != "no" -a "${enable_subproject}" != "yes"; then
   AC_PATH_PROG(DOXYGEN, doxygen, no)
   if test "${DOXYGEN}" != "no"; then
     # Build LaTeX documentation?
@@ -217,17 +235,19 @@ AM_CONDITIONAL(LOL_USE_GTKGL, test "${ac_cv_my_have_gtkgl}" != "no")
 
 
 dnl  Optional features
-AM_CONDITIONAL(BUILD_TEST, test "${enable_test}" != "no")
-AM_CONDITIONAL(BUILD_TOOLS, test "${enable_tools}" != "no")
-AM_CONDITIONAL(BUILD_TUTORIAL, test "${enable_tutorial}" != "no")
-AM_CONDITIONAL(BUILD_SAMPLES, test "${enable_samples}" != "no")
+AM_CONDITIONAL(BUILD_TEST, test "${enable_test}" != "no" -a "${enable_subproject}" != "yes")
+AM_CONDITIONAL(BUILD_TOOLS, test "${enable_tools}" != "no" -a "${enable_subproject}" != "yes")
+AM_CONDITIONAL(BUILD_TUTORIAL, test "${enable_tutorial}" != "no" -a "${enable_subproject}" != "yes")
+AM_CONDITIONAL(BUILD_SAMPLES, test "${enable_samples}" != "no" -a "${enable_subproject}" != "yes")
 
 
 dnl Should we ship non-free data?
 AM_CONDITIONAL(HAVE_NONFREE, true)
 
 
-LOL_AC_SUBST()
+LOL_AC_FINI()
+
+AC_CONFIG_HEADER(config.h)
 
 AC_CONFIG_FILES(
  [Makefile

src/3rdparty/lua

@@ -1 +1 @@
-Subproject commit c43cfa79e9f4d065be03e2e612f73c329aea972a
+Subproject commit 167fe0b5ef115d637fe44d3592f601b341dc3e7e