Compiling TGrep2 on an Intel Macintosh

When TGrep2 (Ed: a search tool for syntactic corpora in Penn Treebank format) was originally written, all Macs were PPC, but since late 2006 all Macs have been x86 and newer ones are even x86_64. In order to compile tgrep2 on an Intel Mac you have to make some small modifications to the TGrep2 and DRUtils source directories before you compile. This fix at least works on MacOS X 10.5 and 10.6. (Apologies for WordPress mangling the <code> blocks.)

First the patch for DRUtils:


--- DRUtils/Makefile 2004-01-13 12:26:49.000000000 -0500
+++ DRUtils.mac/Makefile 2007-11-15 14:32:15.000000000 -0500
@@ -1,6 +1,7 @@
-CC = gcc -Wall -O4 -march=i486
-FLAGS = -DMACHINE_LINUX
+CC = gcc -Wall -O2 -fPIC -march=i486
+FLAGS = -DMACHINE_MACINTOSH
DEBUG =
+HOSTTYPE = macintosh

# Windows:
ifeq ($(HOSTTYPE),i686)
@@ -9,7 +10,7 @@ endif
# Macintosh:
ifeq ($(HOSTTYPE),macintosh)
MAKE = make
- CC = cc -pipe -O3 -Wall -fno-common -arch ppc
+ CC = gcc -pipe -O2 -Wall -fPIC -arch i386 -arch x86_64
FLAGS = -DMACHINE_MACINTOSH
endif
# Alpha:
diff -uprN DRUtils/system.h DRUtils.mac/system.h
--- DRUtils/system.h 2004-01-13 12:31:19.000000000 -0500
+++ DRUtils.mac/system.h 2007-11-15 14:36:57.000000000 -0500
@@ -65,9 +65,9 @@ typedef unsigned int flag; /* a boolean.
#ifdef MACHINE_MACINTOSH
# include
# include
-# define NO_DRAND48
-# ifdef LITTLE_END
-# undef LITTLE_END
+/* # define NO_DRAND48 */
+# ifndef LITTLE_END
+# define LITTLE_END
# endif /* LITTLE_END */
#endif /* MACHINE_MACINTOSH */

@@ -153,10 +153,12 @@ because there is a bug in the xlc optimi
#ifdef LITTLE_END
# define NaNfbytes {{ 0, 0, 0xc0, 0x7f }}
# define NaNdbytes {{ 0, 0, 0, 0, 0, 0, 0xf8, 0xff }}
+/*
# define NTOHL(x) ntohl(x)
# define HTONL(x) htonl(x)
# define NTOHS(x) ntohs(x)
# define HTONS(x) htons(x)
+*/
#else
# define NTOHL(x) (x)
# define HTONL(x) (x)


And here’s the patch for TGrep2 itself:


--- TGrep2/Makefile 2009-03-18 16:30:35.000000000 -0400
+++ TGrep2.mac/Makefile 2007-11-15 14:44:41.000000000 -0500
@@ -2,7 +2,7 @@
UTIL_DIR= ${HOME}/DRUtils

UTIL_LIB= ${UTIL_DIR}/${HOSTTYPE}/libdrutils.a
-CC= gcc -O4 -Wall
+CC= gcc -O2 -Wall -DLITTLE_END -arch i386 -arch x86_64
#CC= gcc -g -Wall

tgrep2: tgrep2.c Makefile


Copy the first block and paste it into a text file with the name “drutils.patch” and copy the second block and paste it into a file with the name “tgrep2.patch”. TGrep2 expects the DRUtils directory to be in the base of your home directory (~/DRUtils/), so it’s best to untar them both in your home directory. Assuming you do put the source directories there, at a Terminal type the following:


patch -p0 < drutils.patch
patch -p0 < tgrep2.patch


Assuming the patches succeed, you can then run make in the DRUtils directory and then (assuming DRUtils successfully built) in the TGrep2 directory. I recommend then copying the tgrep2 binary to /usr/local/bin.