[PATCH] acinclude.m4: fix __builtin_alloca availability test

[Torbjorn Granlund]

Yann Droneaud <yann at droneaud.fr> writes:

  # HG changeset patch
  # User Yann Droneaud <yann at droneaud.fr>
  # Date 1259853333 18000
  # Node ID 3081e11883a3f2169a893e4f224d046f1f8ac93f
  # Parent  5f710b3ff8457795a4e376281561c1aeeee1d3d4
  acinclude.m4: fix __builtin_alloca availability test
  
  Use GMP_PROG_CC_WORKS_PART() instead of GMP_PROG_CC_WORKS_PART_TEST()
  otherwise main() is not declared and the test program failed to link
  
  diff -r 5f710b3ff845 -r 3081e11883a3 acinclude.m4
  --- a/acinclude.m4	Thu Dec 03 15:00:04 2009 +0100
  +++ b/acinclude.m4	Thu Dec 03 10:15:33 2009 -0500
  @@ -548,7 +548,7 @@
   
   # __builtin_alloca is not available everywhere, check it exists before
   # seeing that it works
  -GMP_PROG_CC_WORKS_PART_TEST([$1],[__builtin_alloca availability],
  +GMP_PROG_CC_WORKS_PART([$1],[__builtin_alloca availability],
   [int k; int foo () { __builtin_alloca (k); }],
     [GMP_PROG_CC_WORKS_PART([$1], [alloca array],
   [/* The following provokes an internal compiler error from Itanium HP-UX cc

This confuses me.

There is a main generated for this test, please see the generated
configure.

-- 
Torbjörn