From 2cc42c02a4b1b3efeeb6dfb98e13ba68398af2fa Mon Sep 17 00:00:00 2001
From: robertl <robertl>
Date: Tue, 29 Jul 2003 19:29:14 +0000
Subject: [PATCH] Make GPX input modules optional.

---
 Makefile | 11 +++++++++--
 geo.c    | 52 ++++++++++++++++++++++++++++++++++------------------
 gpx.c    | 19 ++++++++++++++++---
 3 files changed, 59 insertions(+), 23 deletions(-)

diff --git a/Makefile b/Makefile
index b20769b39..519235264 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,12 @@
+
+# If you do not have libexpat and you have no use for reading any input
+# type that is XML-ish (i.e. gpx or geocaching.com's/loc) you can uncomment
+# INHIBIT_EXPAT and coment out LIBEXPAT on just to get a build working quickly.
+# INHIBIT_EXPAT=-DNO_EXPAT
+LIBEXPAT=-lexpat
+
 # add -DDEBUG_MEM to turn on memory allocation logging
-CFLAGS=$(EXTRA_CFLAGS) -g -Icoldsync
+CFLAGS=$(EXTRA_CFLAGS) -g -Icoldsync  $(INHIBIT_EXPAT)
 INSTALL_TARGETDIR=/usr/local/
 
 FMTS=magproto.o gpx.o geo.o mapsend.o mapsource.o \
@@ -29,7 +36,7 @@ OBJS = main.o $(LIBOBJS)
 all: gpsbabel
 
 gpsbabel: $(OBJS)
-	$(CC) $(CFLAGS) $(OBJS) -o gpsbabel -lexpat -lm
+	$(CC) $(CFLAGS) $(OBJS) -o gpsbabel $(LIBEXPAT) -lm
 
 main.o:
 	$(CC) -c $(CFLAGS) -DVERSION=\"$(VERSIOND)\" $<
diff --git a/geo.c b/geo.c
index 959669f55..0957387a6 100644
--- a/geo.c
+++ b/geo.c
@@ -17,7 +17,10 @@
 
  */
 #include "defs.h"
+#if !NO_EXPAT
 #include <expat.h>
+static XML_Parser psr;
+#endif
 
 static int in_wpt;
 static int in_name;
@@ -27,7 +30,6 @@ static int in_cdata;
 static char *cdatastr;
 static char *typestr;
 
-static XML_Parser psr;
 static waypoint *wpt_tmp;
 
 FILE *fd;
@@ -36,6 +38,18 @@ FILE *ofd;
 #define MYNAME "geo"
 #define MY_CBUF 4096
 
+#if NO_EXPAT
+void
+geo_rd_init(const char *fname, const char *args)
+{
+	fatal(MYNAME ": This build excluded GPX support becuase expat was not installed.\n");
+}
+
+void
+geo_read(void)
+{
+}
+#else
 static void
 tag_coord(const char **attrv)
 {
@@ -189,6 +203,25 @@ geo_rd_init(const char *fname, const char *args)
 	XML_SetCharacterDataHandler(psr, geo_cdata);
 }
 
+void
+geo_read(void)
+{
+	int len;
+	char buf[MY_CBUF];
+	
+	while ((len = fread(buf, 1, sizeof(buf), fd))) {
+		if (!XML_Parse(psr, buf, len, feof(fd))) {
+			fatal(MYNAME ":Parse error at %d: %s\n", 
+				XML_GetCurrentLineNumber(psr),
+				XML_ErrorString(XML_GetErrorCode(psr)));
+		}
+	}
+
+	XML_ParserFree(psr);
+}
+
+#endif
+
 void
 geo_rd_deinit(void)
 {
@@ -216,23 +249,6 @@ geo_wr_deinit(void)
 	fclose(ofd);
 }
 
-void
-geo_read(void)
-{
-	int len;
-	char buf[MY_CBUF];
-	
-	while ((len = fread(buf, 1, sizeof(buf), fd))) {
-		if (!XML_Parse(psr, buf, len, feof(fd))) {
-			fatal(MYNAME ":Parse error at %d: %s\n", 
-				XML_GetCurrentLineNumber(psr),
-				XML_ErrorString(XML_GetErrorCode(psr)));
-		}
-	}
-
-	XML_ParserFree(psr);
-}
-
 static void
 geo_waypt_pr(const waypoint *waypointp)
 {
diff --git a/gpx.c b/gpx.c
index 9de09829b..5ed82708e 100644
--- a/gpx.c
+++ b/gpx.c
@@ -20,7 +20,10 @@
  */
 
 #include "defs.h"
-#include <expat.h>
+#ifndef NO_EXPAT
+	#include <expat.h>
+	static XML_Parser psr;
+#endif
 
 static int in_wpt;
 static int in_rte;
@@ -53,8 +56,6 @@ static char *cdatastr;
 static int opt_logpoint = 0;
 static int logpoint_ct = 0;
 
-static XML_Parser psr;
-
 static const char *gpx_version;
 static const char *gpx_creator;
 
@@ -671,6 +672,15 @@ gpx_end(void *data, const char *el)
 	}
 }
 
+#if NO_EXPAT
+void
+gpx_rd_init(const char *fname, const char *args)
+{
+	fatal(MYNAME ": This build excluded GPX support becuase expat was not installed.\n");
+}
+
+#else /* NO_EXPAT */
+
 static void
 gpx_cdata(void *dta, const XML_Char *s, int len)
 {
@@ -761,6 +771,7 @@ gpx_rd_init(const char *fname, const char *args)
 	XML_SetElementHandler(psr, gpx_start, gpx_end);
 	XML_SetCharacterDataHandler(psr, gpx_cdata);
 }
+#endif
 
 static void
 gpx_rd_deinit(void)
@@ -795,6 +806,7 @@ gpx_wr_deinit(void)
 void
 gpx_read(void)
 {
+#ifndef NO_EXPAT
 	int len;
 	int done = 0;
 	char buf[MY_CBUF];
@@ -822,6 +834,7 @@ gpx_read(void)
 				XML_ErrorString(XML_GetErrorCode(psr)));
 		}
 	}
+#endif /* NO_EXPAT */
 }
 
 /*
-- 
2.30.2