[grits] Improve support for relative search paths

[Andy Spencer <andys src gnome org>]

commit 47e838338dab79b43fd8ff08928f72faec9f3219
Author: Andy Spencer <andy753421 gmail com>
Date:   Mon Dec 19 08:19:31 2011 +0000

    Improve support for relative search paths

 configure.ac    |    9 ++++++---
 src/Makefile.am |    4 ++--
 2 files changed, 8 insertions(+), 5 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e92d77e..892bd0a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,9 +46,6 @@ esac
 AM_CONDITIONAL([SYS_WIN], test "$SYS" = "WIN")
 AM_CONDITIONAL([SYS_MAC], test "$SYS" = "MAC")
 AM_CONDITIONAL([SYS_X11], test "$SYS" = "X11")
-if test "$WIN32" = yes; then
-	ac_default_prefix="/"
-fi
 
 # OpenGL flags
 GL_CFLAGS="-DSYS_$SYS"
@@ -60,6 +57,12 @@ esac
 AC_SUBST([GL_CFLAGS])
 AC_SUBST([GL_LIBS])
 
+# Check for relative build
+AC_ARG_ENABLE(relative, [AS_HELP_STRING([--enable-relative],
+	[enable runtime search paths @<:@default=no@:>@])],
+	[DOTS=".."; ac_default_prefix="/"])
+AC_SUBST([DOTS])
+
 # Output 
 AC_CONFIG_FILES([
 	Makefile
diff --git a/src/Makefile.am b/src/Makefile.am
index fd2fceb..ef221dd 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -47,8 +47,8 @@ libgrits_la_SOURCES = grits.h \
 	gtkgl.c         gtkgl.h         \
 	gpqueue.c       gpqueue.h
 libgrits_la_CPPFLAGS = $(AM_CPPFLAGS) \
-	-DPKGDATADIR="\"$(dots)$(datadir)/$(GRITS_SUBDIR)\"" \
-	-DPLUGINSDIR="\"$(dots)$(libdir)/$(GRITS_SUBDIR)\""
+	-DPKGDATADIR="\"$(DOTS)$(datadir)/$(GRITS_SUBDIR)\"" \
+	-DPLUGINSDIR="\"$(DOTS)$(libdir)/$(GRITS_SUBDIR)\""
 libgrits_la_LIBADD  = $(AM_LDADD) -lm \
 	objects/libgrits-objects.la \
 	data/libgrits-data.la