Re: makefile define delimma GOT IT

On Thu, 21 Apr 2005, Billy Patton wrote:

> I have a makefile.common that I share between several directories
> It has some define statements that determine several items
> 2 specifically are where the problem occurs.
>
> First on our network we have 32 and 64 bit linux boxes.
> Our solaris boxes are only 64.  But the default system library is for 32 b
it.
> Just like the Linux boxes I have to set LD_LIBRARY_PATH to be for the corr
ect
> lib
> On linux it's either lib or lib64
> On solris it's either lib or lib/sparc9v
>
> Here are my define statements:
> define  Bit_size
>   if   [ `/bin/uname -s`   = 'Linux'  ] ; then \
>     if  [ `/bin/uname -m`  = 'x86_64' ] ; then echo 64 ; \
>     else echo 32; \
>     fi; \
>   elif   [ `/bin/uname -s` = 'SunOS'    ] ; then \
>      if [ `/bin/isainfo -b` = 64 ] ; then echo 64; \
>      else echo 32; \
>      fi; \
>   fi
> endef
>
> define ld_path
>   if [ `/bin/uname -s` = 'Linux' ] ; then \
>     if [ `/bin/uname -m`  = 'x86_64' ] ; then \
Changed the above line to
if [ $(BIT) = ...
>       echo ${GCCDIR}/lib64 ; \
>     else \
>       echo ${GCCDIR}/lib ; \
>     fi; \
>   elif [ `/bin/uname -s` = 'SunOS' ] ; then \
>     if [ `/bin/isainfo -b` = 64 ] ; then \
Changed the above line to
if [ $(BIT) = ...

The make documentations that if a varaible is set with := it is done the fir
st
time then naught else.  If it is set with = then is is set then needed.
So thing don't have to be in order.

>       echo ${GCCDIR}/lib/sparcv9; \
>     else \
>       echo ${GCCDIR}/lib; \
>     fi; \
>   fi
> endef
>
> LD_LIBRARY_PATH :=  $(shell $(ld_path))

> LD_RUN_PATH     :=  $(shell $(ld_path))

> BIT             :=  $(shell $(Bit_size))

> OS              :=  $(shell $(Cpu_type))/$(BIT)
BIT             =  $(shell $(Bit_size))
LD_LIBRARY_PATH =  $(shell $(ld_path))
LD_RUN_PATH     =  $(shell $(ld_path))
>
>
> The problem comes with the solaris boxes
> I can compile my lib and the test code without a problem.
> I seperate as
> Linux/32/
> Linux/64/
> SunOS/32/
> SunOS/64/
>
> When I do my :
> make BIT=32 test
> on a solaris box everything gets compiled.D
> But the LD_LIBRARY_PATH has been set to a 64 bit system.
> What I need is for the define ld_path to use the BIT variable.
> Either having been set or passed in from the command line.
>
> Now the question is. when does the define get called/compiled?
> Can I put ${BIT} in the ld_path define?
>
> How to set LD_LIBRARY_PATH for 32 bit on 64 bit system.
>
>   ___  _ ____       ___       __  __
>  / _ )(_) / /_ __  / _ \___ _/ /_/ /____  ___
> / _  / / / / // / / ___/ _ `/ __/ __/ _ \/ _ \
> /____/_/_/_/\_, / /_/   \_,_/\__/\__/\___/_//_/
>           /___/ Texas Instruments ASIC Circuit Design Methodology Group
> Dallas, Texas, 214-480-4455,  b-patton@ti.com
>

___  _ ____       ___       __  __
/ _ )(_) / /_ __  / _ \___ _/ /_/ /____  ___
/ _  / / / / // / / ___/ _ `/ __/ __/ _ \/ _ \
/____/_/_/_/\_, / /_/   \_,_/\__/\__/\___/_//_/
/___/
Texas Instruments ASIC Circuit Design Methodology Group
Dallas, Texas, 214-480-4455,  b-patton@ti.com