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 in The Autoconf Manual).
A few additional variables are defined when an Objective C source file is seen:
OBJC ¶The name of the Objective C compiler.
OBJCFLAGS ¶Any flags to pass to the Objective C compiler.
AM_OBJCFLAGS ¶The maintainer’s variant of OBJCFLAGS.
OBJCCOMPILE ¶The command used to compile an Objective C source file. The file name is appended to form the complete command line.
OBJCLINK ¶The command used to link an Objective C program.