Fix undefined symbols error.
--- src/allegro/Makefile.am.orig	2009-09-03 15:35:02.000000000 -0500
+++ src/allegro/Makefile.am	2024-01-23 05:32:59.000000000 -0600
@@ -2,7 +2,7 @@
 
 INCLUDES = -I$(top_srcdir)/include
 
-libguichan_allegro_la_LDFLAGS = -no-undefined -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
+libguichan_allegro_la_LDFLAGS = -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 
 libguichan_allegro_la_SOURCES =		\
 		allegro.cpp		\
--- src/opengl/Makefile.am.orig	2009-09-03 15:35:02.000000000 -0500
+++ src/opengl/Makefile.am	2024-01-23 05:32:59.000000000 -0600
@@ -2,7 +2,7 @@
 
 INCLUDES = -I$(top_srcdir)/include
 
-libguichan_opengl_la_LDFLAGS = -no-undefined -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) 
+libguichan_opengl_la_LDFLAGS = -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) 
 
 libguichan_opengl_la_SOURCES =	\
 	opengl.cpp		\
--- src/sdl/Makefile.am.orig	2009-09-03 15:35:02.000000000 -0500
+++ src/sdl/Makefile.am	2024-01-23 05:32:59.000000000 -0600
@@ -4,7 +4,7 @@
 
 INCLUDES = -I$(top_srcdir)/include
 
-libguichan_sdl_la_LDFLAGS = -no-undefined -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
+libguichan_sdl_la_LDFLAGS = -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 
 libguichan_sdl_la_SOURCES =	\
 	sdl.cpp			\