gentoo-overlay/sci-geosciences/gpsbabel/files/gpsbabel-1.5.4-use_system_zlib.patch

--- a/configure.in	2017-01-21 03:17:05.480317203 +0100
+++ b/configure.in	2017-01-21 03:26:53.743671224 +0100
@@ -402,7 +402,7 @@
 AC_SUBST(QT_SYSINC_OPT)
 AC_SUBST(QT_LIBS)
 
-AC_CONFIG_FILES([Makefile gbversion.h gui/setup.iss xmldoc/makedoc tools/mkcapabilities win32/gpsbabel.rc jeeps/Makefile zlib/empty])
+AC_CONFIG_FILES([Makefile gbversion.h gui/setup.iss xmldoc/makedoc tools/mkcapabilities win32/gpsbabel.rc jeeps/Makefile])
 AC_CONFIG_FILES([gui/makelinuxdist.sh], [chmod +x gui/makelinuxdist.sh])
 AC_OUTPUT
 
--- a/Makefile.in	2017-01-21 03:17:05.530317828 +0100
+++ b/Makefile.in	2017-01-21 03:32:19.447032690 +0100
@@ -102,14 +102,7 @@
 
 SHAPE=-lshp
 
-MINIZIP=zlib/contrib/minizip/zip.o \
-	zlib/contrib/minizip/ioapi.o
-
-ZLIB=zlib/adler32.o zlib/compress.o zlib/crc32.o zlib/deflate.o zlib/inffast.o \
-	zlib/inflate.o zlib/infback.o zlib/inftrees.o zlib/trees.o \
-	zlib/uncompr.o zlib/gzlib.o zlib/gzclose.o zlib/gzread.o \
-	zlib/gzwrite.o zlib/zutil.o $(MINIZIP)
-
+ZLIB=-lz -lminizip
 
 LIBOBJS = queue.o route.o waypt.o filter_vecs.o util.o vecs.o mkshort.o \
           csv_util.o strptime.o grtcirc.o util_crc.o xmlgeneric.o \
@@ -119,7 +112,7 @@
 	  src/core/xmlstreamwriter.o \
 	  src/core/usasciicodec.o\
 	  src/core/ziparchive.o \
-	  $(GARMIN) $(JEEPS) @ZLIB@ $(FMTS) $(FILTERS)
+	  $(GARMIN) $(JEEPS) $(FMTS) $(FILTERS)
 OBJS = main.o globals.o $(LIBOBJS) @FILEINFO@
 
 DEPFILES = $(OBJS:.o=.d)
@@ -148,10 +141,10 @@
 all: gpsbabel$(EXEEXT)
 
 gpsbabel$(EXEEXT): configure Makefile $(OBJS) @GPSBABEL_DEBUG@ 
-	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(SHAPE) @LIBS@ $(QT_LIBS) @USB_LIBS@ $(OUTPUT_SWITCH)$@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(SHAPE) $(ZLIB) @LIBS@ $(QT_LIBS) @USB_LIBS@ $(OUTPUT_SWITCH)$@
 
 gpsbabel-debug: $(OBJS)
-	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(SHAPE) @LIBS@ @EFENCE_LIB@ $(QT_LIBS) @USB_LIBS@ $(OUTPUT_SWITCH)$@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(SHAPE) $(ZLIB) @LIBS@ @EFENCE_LIB@ $(QT_LIBS) @USB_LIBS@ $(OUTPUT_SWITCH)$@
 
 Makefile gbversion.h: Makefile.in config.status xmldoc/makedoc.in \
 	  gbversion.h.in gui/setup.iss.in
--- a/src/core/ziparchive.cc	2017-01-02 06:05:19.000000000 +0100
+++ b/src/core/ziparchive.cc	2017-01-21 03:51:30.402421165 +0100
@@ -23,7 +23,7 @@
 
 #include "defs.h"
 #include "src/core/logging.h"
-#include "zlib/contrib/minizip/zip.h"
+#include <minizip/zip.h>
 
 #include <QtCore/QFile>
 #include <QtCore/QDebug>
@@ -89,4 +89,4 @@
       return true;
   }
   return false;
-}
\ No newline at end of file
+}
--- a/src/core/ziparchive.h	2017-01-02 06:05:19.000000000 +0100
+++ b/src/core/ziparchive.h	2017-01-21 03:51:05.931115241 +0100
@@ -21,7 +21,7 @@
 
 #include <QtCore/QString>
 #include <QtCore/QStringList>
-#include "zlib/contrib/minizip/zip.h"
+#include <minizip/zip.h>
 
 class  ZipArchive
 {