fix some FreeBSD issues

configs/freebsd

@@ -13,7 +13,7 @@ OPT_FLAGS  = -O2
 PIC_FLAGS  = -fPIC
 
 DEFINES = -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_BSD_SOURCE -DUSE_XSHM \
-	-DHZ=100 -DHAVE_POSIX_MEMALIGN
+	-DHZ=100
 
 X11_INCLUDES = -I/usr/X11R6/include
 

configs/freebsd-dri

@@ -15,7 +15,7 @@ EXPAT_INCLUDES = -I/usr/local/include
 X11_INCLUDES = -I/usr/X11R6/include
 DEFINES = -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER \
 	-DGLX_DIRECT_RENDERING -DGLX_INDIRECT_RENDERING \
-	-DHAVE_ALIAS -DHAVE_POSIX_MEMALIGN
+	-DHAVE_ALIAS
 
 CFLAGS = $(WARN_FLAGS) $(OPT_FLAGS) $(PIC_FLAGS) -Wmissing-prototypes -std=c99 -Wundef -ffast-math \
 	$(ASM_FLAGS) $(X11_INCLUDES) $(DEFINES)

src/glut/glx/glut_event.c

@@ -24,7 +24,7 @@
 # ifdef __sgi
 #  include <bstring.h>    /* prototype for bzero used by FD_ZERO */
 # endif
-# if (defined(SVR4) || defined(CRAY) || defined(AIXV3)) && !defined(FD_SETSIZE)
+# if (defined(__FreeBSD__) || defined(SVR4) || defined(CRAY) || defined(AIXV3)) && !defined(FD_SETSIZE)
 #  include <sys/select.h> /* select system call interface */
 #  ifdef luna
 #   include <sysent.h>