[Cmake] running another command

[Nikhil Kriplani]

Hi All,

I am new to cmake, and I was having a problem running a shell command during 
the make process.

The command I want to run is

sh mkheaders.sh $(ELEMNAMES).
What this does is, it generates a file called element_headers.h, which is 
used by other source files later on during the make process.

What I tried is:

ADD_CUSTOM_TARGET(ElementHeaders echo "creating element_headers.h")

ADD_CUSTOM_COMMAND(
        SOURCE
        COMMAND sh
        ARGS mkheaders.sh
             ${ELEMNAMES}
        TARGET ElementHeaders
        OUTPUTS element_headers.h)


In the CMakeLists.txt file, I made sure that I use SET(ELEMNAMES 
source_list) and it shows up correctly in the Makefile generated.
Also, I was not sure what name to give to TARGET, so I just arbitrarily used 
ElementHeaders.

Help will be appreciated.

--Nik.







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