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How do I access the custom variable defined at the beginning of the Makefile.am?

Specifically, I want to do something in the following lines. For a Makefile.am script that defines how the library file should be created, I want to be able to access the shared name of the library. For example, if I wanted the library name to be named "name", I could start with the following variable:

LIBNAME = name

Then I might have something like this:

lib_LTLIBRARIES = lib$(LIBNAME).la

But then automake starts to complain when I want to do something like the following:

lib$(LIBNAME)_la_SOURCES = file1.cpp file2.cpp
lib$(LIBNAME)_la_LIBADD = ...

Is it possible to similarly use some other syntax so that I don't have to repeat the library name many times?

Greetings,

Ben.

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2 answers


You can do this if you define your variable in configure

and not in the Makefile itself.

For example, in configure.ac

:

LIBNAME=name
AC_SUBST(LIBNAME)


Then you can access it in the Makefile.am

following way:

lib_LTLIBRARIES = lib@LIBNAME@.la
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Then I might have something like this:

LIBNAME = name
lib_LTLIBRARIES = lib $ (LIBNAME) .la
lib $ (LIBNAME) _la_SOURCES = file1.cpp file2.cpp
lib $ (LIBNAME) _la_LIBADD = ...


IFAIK, this won't work with automake. I don't think it is possible to do this using any other syntax.

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