From 3cf2faf81f4990d231c42c0151eef6738bf0160c Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Thu, 18 Nov 2010 22:24:11 +0000
Subject: Added autodetection to configure for bullet libraries installed in
 /usr or /usr/local, added --enable-static-bullet option to staticly link the
 libraries. Updated installation instructions.

---
 configure.in | 64 ++++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 43 insertions(+), 21 deletions(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index ede99bf..e33b46b 100644
--- a/configure.in
+++ b/configure.in
@@ -16,6 +16,8 @@ AC_LANG_CPLUSPLUS
 AC_PROG_CXX
 AM_PROG_LIBTOOL
 
+AC_CONFIG_MACRO_DIR([m4])
+
 dnl KDE_FIND_PATH(programm-name, variable-name, list of directories,
 dnl     if-not-found, test-parameter)
 AC_DEFUN([KDE_FIND_PATH],
@@ -150,9 +152,7 @@ dnl
 AC_MSG_CHECKING(whether to abort on compiler warnings)
 WARN_CFLAGS=""
 AC_ARG_ENABLE(warn,
-        AC_HELP_STRING(
-                [--disable-warn], [do not abort on compiler warnings]
-        ),
+        AC_HELP_STRING([--disable-warn], [do not abort on compiler warnings]),
         AC_MSG_RESULT(no),
         AC_MSG_RESULT(yes)
         WARN_CFLAGS="$WARN_CFLAGS -Wall -Werror"
@@ -165,9 +165,7 @@ dnl
 
 AC_MSG_CHECKING(whether to include debug messages)
 AC_ARG_ENABLE(debug_messages,
-	AC_HELP_STRING(
-		[--disable-debug-messages], [build without extra debug messages]
-	),
+	AC_HELP_STRING([--disable-debug-messages], [build without extra debug messages]),
 	AC_MSG_RESULT(no),
 	AC_MSG_RESULT(yes)
 	AC_DEFINE_UNQUOTED(HAVE_DEBUG_MESSAGES, 1, [Define this to enable debug messages])
@@ -237,35 +235,59 @@ dnl
 
 HAVE_BULLET=no
 
+AC_ARG_ENABLE(static_bullet,
+	AC_HELP_STRING([--enable-static-bullet], [staticly link with bullet physics libraries]),
+	AC_MSG_RESULT(yes),
+	STATIC_BULLET="yes"
+	AC_MSG_RESULT(no)
+	STATIC_BULLET="no"
+)
+
 AC_ARG_WITH(bullet,
-        AC_HELP_STRING([--with-bullet=DIR],
-                [use the bullet physics library in DIR (read the documentation)]
+        AC_HELP_STRING([--with-bullet=PREFIX],
+                [link with bullet physics library installed in PREFIX]
         )
 )
 
 LD_FLAGS_save="$LD_FLAGS"
 CPPFLAGS_save="$CPPFLAGS"
 
-AC_MSG_CHECKING(for bullet directory)
-
-BULLET_DIR="/usr/local"
+BULLET_DIRS="/usr/local /usr"
 if test "x${with_bullet}" != "x"; then
-	BULLET_DIR="${with_bullet}"
+	BULLET_DIRS="${with_bullet}"
 fi
-AC_MSG_RESULT([$BULLET_DIR])
 
-BULLET_CPPFLAGS="-I${BULLET_DIR}/include/bullet"
-BULLET_LIBS="$BULLET_DIR/lib/libBulletDynamics.a $BULLET_DIR/lib/libBulletCollision.a $BULLET_DIR/lib/libLinearMath.a"
+for dir_to_test in ${BULLET_DIRS}; do
+	if test "x${BULLET_DIR}" = "x"; then
+		CPPFLAGS="-I${dir_to_test}/include/bullet"
+		AC_CHECK_HEADER(btBulletDynamicsCommon.h,
+			BULLET_DIR="${dir_to_test}",
+			[]
+		)
+	fi
+done
+
+if test "x${BULLET_DIR}" = "x"; then
+	AC_MSG_ERROR([bullet physics library not found in ${BULLET_DIRS}])
+fi
+
+AC_MSG_CHECKING([for bullet prefix])
+AC_MSG_RESULT([${BULLET_DIR}])
+
+AC_MSG_CHECKING([if static linking of the bullet libraries is requested])
+if test "x${enable_static_bullet}" = "xyes"; then
+	BULLET_CPPFLAGS="-I${BULLET_DIR}/include/bullet"
+	BULLET_LIBS="$BULLET_DIR/lib/libBulletDynamics.a $BULLET_DIR/lib/libBulletCollision.a $BULLET_DIR/lib/libLinearMath.a"
+	AC_MSG_RESULT([yes])
+else
+	BULLET_CPPFLAGS="-I${BULLET_DIR}/include/bullet"
+	BULLET_LIBS="-lBulletDynamics -lBulletCollision -lLinearMath"
+	AC_MSG_RESULT([no])
+fi
 
 CPPFLAGS="$CPPFLAGS_save $BULLET_CPPFLAGS"
 LD_FLAGS="$LD_FLAGS_save $BULLET_LIBS"
 
-AC_CHECK_HEADER(btBulletDynamicsCommon.h,
-	AC_DEFINE(HAVE_BULLET, yes, [Define this if you have the bullet physics library])
-	HAVE_BULLET="yes",
-	AC_MSG_ERROR([bullet physics library not found (http://bulletphysics.org)])
-)
-
 CPPFLAGS="$CPPFLAGS_save"
 LD_FLAGS="$LD_FLAGS_save"
 
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