automake-1.16: Vala Support
8.17 Vala Support
=================
Automake provides initial support for Vala
(<https://www.vala-project.org/>). This requires valac version 0.7.0 or
later, and currently requires the user to use GNU ‘make’.
foo_SOURCES = foo.vala bar.vala zardoz.c
Any ‘.vala’ file listed in a ‘_SOURCES’ variable will be compiled
into C code by the Vala compiler. The generated ‘.c’ files are
distributed. The end user does not need to have a Vala compiler
installed.
Automake ships with an Autoconf macro called ‘AM_PROG_VALAC’ that
will locate the Vala compiler and optionally check its version number.
-- Macro: AM_PROG_VALAC ([MINIMUM-VERSION], [ACTION-IF-FOUND],
[ACTION-IF-NOT-FOUND]) Search for a Vala compiler in ‘PATH’. If it
is found, the variable ‘VALAC’ is set to point to it (see below for
more details). This macro takes three optional arguments. The
first argument, if present, is the minimum version of the Vala API
required to compile this package. For Vala releases, this is the
same as the major and minor release number; e.g., when ‘valac
--version’ reports ‘0.48.7’, ‘valac --api-version’ reports ‘0.48’.
If a compiler is found and satisfies MINIMUM-VERSION, then
ACTION-IF-FOUND is run (this defaults to do nothing). Otherwise,
ACTION-IF-NOT-FOUND is run. If ACTION-IF-NOT-FOUND is not
specified, the default value is to print a warning in case no
compiler is found, or if a too-old version of the compiler is
found.
There are a few variables that are used when compiling Vala sources:
‘VALAC’
Absolute path to the Vala compiler, or simply ‘valac’ if no
suitable Vala compiler could be found at configure runtime.
‘VALAFLAGS’
Additional arguments for the Vala compiler.
‘AM_VALAFLAGS’
The maintainer’s variant of ‘VALAFLAGS’.
lib_LTLIBRARIES = libfoo.la
libfoo_la_SOURCES = foo.vala
Renamed Objects::) to produce different C files from one Vala source
file.