Re: 01-ac-lang-compiler-require.patch (Was: CC/CPP/TRY_LINK)

[Akim Demaille]

| Hello, Ralf!
| > checking how to run the C preprocessor... cc -E
| > checking for sh-rtems-gcc... sh-rtems-gcc
| 
| It's a separate problem that needs to be addressed before 2.50.
| AC_PROG_CPP should require AC_PROG_CC.

Right.

| Maybe we should go as far as to make both AC_PROG_CPP and AC_PROG_CC
| obsolete in favor of
| 
| AC_LANG(C)
| 
| By the way, shouldn't we change the syntax of AC_LANG to
| 
| AC_LANG(C, COMPILERS, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
| 
| and go ahead if no C compiler has been found but ACTION-IF-NOT-FOUND is
| given?

What advantage would that bring?  How do you deal with the implicit
initial AC_LANG(C).  AC_LANG is here to select the current language,
its semantics should not be overloaded IMHO.

| I really hate all those "exit 77" in the autoconf code - it's an attempt
| to accomodate the testsuite at the expence of the users.

Errr, what's the problem with exit 77 instead of exit 1?