Changes between Version 14 and Version 15 of BuildingWithMinGW

Timestamp:

Jul 15, 2011, 9:33:06 AM (13 years ago)

Author:

Even Rouault

Comment:

BuildingWithMinGW: mention how to disable generation of libgdal.a

BuildingWithMinGW

@@ -9 +9 @@
 And you should have libgdal-1.dll in your c:\msys\1.0\local\bin and libgdal-1.dll.a in c:\msys\1.0\local\lib. 
 
-'''linking:'''
+'''Linking issues:'''
 
 Edit libtool at line 6114 to sed out the MSYS-anchored absolute path and replace it by a relative path or possibly a Windows drive-based absolute path.
@@ -16 +16 @@
 
 Edit GNUmakefile on lines 6-12 and replace $(GDAL_ROOT) with . (a dot).
+
+By default both libgdal.a and libgdal.dll are generated. However, command line utilities such as gdalinfo.exe, etc... will statically link against libgdal.a, instead of libgdal.dll, which leak to huge binary files. You can edit GNUmakefile as such to avoid producing libgdal.a :
+
+
+{{{
+Index: GNUmakefile
+===================================================================
+--- GNUmakefile (revision 22722)
++++ GNUmakefile (copie de travail)
+@@ -1,13 +1,13 @@
+ 
+ include GDALmake.opt
+ 
+-GDAL_OBJ       =       $(GDAL_ROOT)/frmts/o/*.o \
+-                       $(GDAL_ROOT)/gcore/*.o \
+-                       $(GDAL_ROOT)/port/*.o \
+-                       $(GDAL_ROOT)/alg/*.o
++GDAL_OBJ       =       ./frmts/o/*.o \
++                       ./gcore/*.o \
++                       ./port/*.o \
++                       ./alg/*.o
+ 
+ ifeq ($(OGR_ENABLED),yes)
+-GDAL_OBJ += $(GDAL_ROOT)/ogr/ogrsf_frmts/o/*.o
++GDAL_OBJ += ./ogr/ogrsf_frmts/o/*.o
+ endif
+ 
+ include ./ogr/file.lst
+@@ -28,13 +28,8 @@
+        $(LD_SHARED) $(GDAL_SLIB_SONAME) $(GDAL_OBJ) $(GDAL_LIBS) $(LDFLAGS) $(LIBS) \
+                -o $(GDAL_SLIB)
+ 
+-$(GDAL_LIB):   $(GDAL_OBJ) GDALmake.opt
+-       rm -f libgdal.a
+-       $(AR) r $(GDAL_LIB) $(GDAL_OBJ)
+-       $(RANLIB) $(GDAL_LIB)
+-
+-$(GDAL_SLIB):  $(GDAL_OBJ) $(GDAL_LIB)
+-       $(LD_SHARED) $(GDAL_SLIB_SONAME) $(GDAL_OBJ) $(GDAL_LIBS) $(LDFLAGS) $(LIBS) \
++$(GDAL_SLIB):  $(GDAL_OBJ)
++       $(LD_SHARED) $(GDAL_SLIB_SONAME) $(GDAL_OBJ) $(LDFLAGS) $(LIBS) \
+                -o $(GDAL_SLIB)
+ 
+ $(LIBGDAL):    $(GDAL_OBJ:.o=.lo)
+@@ -47,7 +42,7 @@
+ endif
+ 
+ check-lib:     port-target core-target frmts-target ogr-target
+-       $(MAKE) $(LIBGDAL-yes)
++       $(MAKE) $(GDAL_SLIB)
+ 
+ port-target:
+        (cd port; $(MAKE))
+}}}
 
 '''expat:'''
@@ -129 +183 @@
 
 
-'''Python bindings :'''
+'''Python bindings:'''
 
 If you use the regular Python Windows binaries, you need to edit $PYTHON_ROOT\lib\distutils\ccompiler.py (at least true for Python 2.7) and change the "_default_compilers" mapping as following, in order GCC to be used instead of MSVC when building the GDAL Python bindings :