[gdal-dev] Building Improvment for Ingres driver in Windows

[chen zhen]

Hi all,

It is great to know the Ingres driver pulled from SVN has been compiled successfully.

However it is not flexible enough or in other word, a little improvement should be applied:

1. One switch for turn on/off the Ingres definition. Currently by uncomment several definitions in nmake.opt is a little complex. Also the header files and library files directories must be specified by hand. After Installing the Ingres database, the locations of this file are fixed. It would be better to set the default path related to a variable such as $(ING_HOME). ING_HOME variable could be set to II_SYSTEM previously and let it detected automatically. If the ING_HOME is set, then Ingres driver will be involved.

# nmake.opt
---------------------------------------------------------------------
   # INGRES Libraries
   # Uncomment the following to enable Ingres format.
   # INGRES_HOME = $(II_SYSTEM)
   !ifdef INGRES_HOME
   INGRES_INC_DIR = $(INGRES_DIR)\files
   INGRES_LIB = $(INGRES_DIR)\lib\iilibapi.lib \
　　$(INGRES_DIR)\lib\iilibutil.lib \
 $(INGRES_DIR)\lib\libingres.lib
   !endif
 
2. Building Ingres driver as a plugin library. It is not necessary but provides more flexibility especially for Ingres that needs a number of dependent libraries.
The Ingres_Plgin flag is set to check which mode would it be. 
　　
　　# nmake.opt
　　---------------------------------------------------------------------
　　# INGRES Libraries
　　# Uncomment the following to enable Ingres format.
　　# INGRES_HOME = $(II_SYSTEM)
　　# Uncomment the following if you prefer to build Ingres support as a plugin.
　　# INGRES_PLUGIN = YES
　　!ifdef INGRES_HOME
　　INGRES_INC_DIR = $(INGRES_DIR)\files
　　INGRES_LIB = $(INGRES_DIR)\lib\iilibapi.lib \
　　$(INGRES_DIR)\lib\iilibutil.lib \
　　$(INGRES_DIR)\lib\libingres.lib
 !endif


Any idea?

zhen