[GRASS5] Problem compiling 5.1

[Aleksey Y Naumov]

Glynn,

thanks for the explanation, very clear as always.

Aleksey

On Thu, 14 Mar 2002, Glynn Clements wrote:

> 
> Aleksey Naumov wrote:
> 
> > I have a problem compiling grass5.1. As directed in INSTALL, I configure it 
> > with grass5.0 head branch:
> > 
> > CFLAGS="-g -Wall" ./configure --with-grass50=/home/Geo/GRASS/grass
> > 
> > Then run 'make'. Here's the error:
> > 
> > make[3]: Entering directory `/home/Geo/GRASS/grass51/display/d.mon/cmd'
> > make[3]: *** No rule to make target `-lpq', needed by 
> > `/home/Geo/GRASS/grass51/dist.i686-pc-linux-gnu/etc/bin/cmd/d.mon'.  Stop.
> > make[3]: Leaving directory `/home/Geo/GRASS/grass51/display/d.mon/cmd'
> > make[2]: *** [subdirs] Error 1
> > make[2]: Leaving directory `/home/Geo/GRASS/grass51/display/d.mon'
> > make[1]: *** [subdirs] Error 1
> > make[1]: Leaving directory `/home/Geo/GRASS/grass51/display'
> > make: *** [default] Error 1
> > 
> > I guess '-lpq' must be the linking flag for Postgres library 'libpq', as 
> > defined in Platform.make:
> > #PostgreSQL:
> > PQINCPATH           =  -I/usr/local/pgsql/include
> > PQLIBPATH           =  -L/usr/local/pgsql/lib
> > PQLIB               = -lpq
> > 
> > but looking thru the Makefiles I don't see how 'd.mon' is dependent upon 
> > '-lpq', where is this specified?
> > I must be missing something in the Makefile logic or layout.
> 
> d.mon/cmd/Makefile has:
> 
> 	LIBES     = $(DISPLAYLIB) $(RASTERLIB) $(VECTLIB) $(DBMILIB) $(GISLIB)
> 
> 	include $(MODULE_TOPDIR)/include/Make/Module.make
> 
> Module.make has:
> 
> 	include $(MODULE_TOPDIR)/include/Make/Platform.make
> 	include $(MODULE_TOPDIR)/include/Make/Grass.make
> 
> 	...
> 
> 	$(BIN_CMD)/$(PGM): $(ARCH_CMD_OBJS) $(LIBES) 
> 		$(CC) $(LDFLAGS) -o $@ $(ARCH_CMD_OBJS) $(LIBES) $(MATHLIB) $(XDRLIB)
> 		@test -e $(BIN)/$(PGM) || ln $(ETC)/front.end $(BIN)/$(PGM)
> 
> IOW, the program has $(LIBES) as dependencies.
> 
> Grass.make has:
> 
> 	VECTLIB     = $(VECTRLIB) $(DIG2LIB) $(SHAPELIB) $(PQLIB) $(BTREELIB)
> 
> $(PQLIB) comes from Platform.make, which is the new name for the
> (configure-generated) "head" file.
> 
> So, $(VECTLIB) is only suitable for use in a rule's commands, not in
> its dependencies.
> 
> The $(BIN_CMD)/$(PGM) rule in Module.make needs to be re-written, with
> $(LIBES) replaced by two separate variables: one for GRASS libraries
> (dependencies, specified using pathnames) and one for external
> libraries (not dependencies, specified using -L/-l switches).
> 
> -- 
> Glynn Clements <glynn.clements at virgin.net>
> 
>