Automake includes some support for Objective C.
Any package including Objective C code must define the output variable
OBJC
in configure.ac; the simplest way to do this is to use
the AC_PROG_OBJC
macro (see Particular Program Checks).
A few additional variables are defined when an Objective C source file is seen:
OBJC
OBJCFLAGS
AM_OBJCFLAGS
OBJCFLAGS
.
OBJCCOMPILE
OBJCLINK