autoconf: Objective C Compiler

1 
1 5.10.5 Objective C Compiler Characteristics
1 -------------------------------------------
1 
1  -- Macro: AC_PROG_OBJC ([COMPILER-SEARCH-LIST])
1      Determine an Objective C compiler to use.  If `OBJC' is not already
1      set in the environment, check for Objective C compilers.  Set
1      output variable `OBJC' to the name of the compiler found.
1 
1      This macro may, however, be invoked with an optional first argument
1      which, if specified, must be a blank-separated list of Objective C
1      compilers to search for.  This just gives the user an opportunity
1      to specify an alternative search list for the Objective C
1      compiler.  For example, if you didn't like the default order, then
1      you could invoke `AC_PROG_OBJC' like this:
1 
1           AC_PROG_OBJC([gcc objcc objc])
1 
1      If using the GNU Objective C compiler, set shell variable `GOBJC'
1      to `yes'.  If output variable `OBJCFLAGS' was not already set, set
1      it to `-g -O2' for the GNU Objective C compiler (`-O2' on systems
1      where `gcc' does not accept `-g'), or `-g' for other compilers.
1 
1  -- Macro: AC_PROG_OBJCPP
1      Set output variable `OBJCPP' to a command that runs the Objective C
1      preprocessor.  If `$OBJC -E' doesn't work, `/lib/cpp' is used.
1