FreeBSD, as well as -- I'm sure -- all Linux distributions already have
both the GNU getopt and the GNU regex functionality available -- either
as part of (g)libc or as additional libraries.
Using those will help cut the m4-executable's size (30% on my
FreeBSD/amd64), as well as avoid the bugs already fixed by the later
revisions of these libraries.
m4's configure should check for these and avoid compiling m4's own
regex.o and getopt*.o
Attached is the patch, I'm trying to include into FreeBSD port of m4 --
it should help illustrate, what I'm talking about.
Thanks! Yours,
-mi
--- lib/Makefile.in Wed Feb 9 15:48:35 2005
+++ lib/Makefile.in Tue Sep 13 00:46:36 2005
@@ -39,8 +39,8 @@
INCLUDES = -I.. -I$(srcdir)
-HEADERS = getopt.h obstack.h regex.h
-SOURCES = regex.c getopt.c getopt1.c error.c obstack.c xmalloc.c \
+HEADERS = obstack.h
+SOURCES = error.c obstack.c xmalloc.c \
xstrdup.c alloca.c strtol.c
-OBJECTS = regex.o getopt.o getopt1.o error.o obstack.o xmalloc.o \
+OBJECTS = error.o obstack.o xmalloc.o \
xstrdup.o @ALLOCA@ @LIBOBJS@
--- src/Makefile.in Thu Mar 31 04:46:09 2005
+++ src/Makefile.in Tue Sep 13 01:25:38 2005
@@ -79,5 +79,4 @@
$(OBJECTS): $(ANSI2KNR) ../config.h m4.h ../lib/obstack.h
-builtin$O: ../lib/regex.h
ansi2knr: ansi2knr.o
--- Makefile.in Thu Mar 31 06:56:34 2005
+++ Makefile.in Tue Sep 13 01:39:46 2005
@@ -37,5 +37,5 @@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
LDFLAGS = @LDFLAGS@
-LIBS = @LIBS@
+LIBS = @LIBS@ -lgnuregex
prefix = @prefix@
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