imaxabs: Avoid link error on OSF/1 with DTK cc.

(cherry picked from commit 7c712d9b74453214bc029ebcb12f6f2a00f68bbc)

diff --git a/ChangeLog b/ChangeLog
index a66129a..c721cbf 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2011-09-01  Bruno Haible  <bruno@clisp.org>
 
+       imaxabs: Avoid link error on OSF/1 with DTK cc.
+       * m4/imaxabs.m4 (gl_FUNC_IMAXABS): Also test whether imaxabs is defined
+       as a function.
+       * modules/imaxabs (configure.ac): Test whether imaxabs is defined, not
+       whether it is declared.
+
+2011-09-01  Bruno Haible  <bruno@clisp.org>
+
        pthread: Determine $(LIB_PTHREAD) correctly on IRIX 6.5.
        * m4/pthread.m4 (gl_PTHREAD_CHECK): Check for pthread_join, not
        pthread_create.

diff --git a/m4/imaxabs.m4 b/m4/imaxabs.m4
index 58e5ac8..294b8f5 100644 (file)
--- a/m4/imaxabs.m4
+++ b/m4/imaxabs.m4
@@ -1,4 +1,4 @@
-# imaxabs.m4 serial 3
+# imaxabs.m4 serial 4
 dnl Copyright (C) 2006, 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -7,6 +7,9 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_IMAXABS],
 [
   AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+
+  dnl On OSF/1 5.1 with cc, this function is declared but not defined.
+  AC_CHECK_FUNCS_ONCE([imaxabs])
   AC_CHECK_DECLS_ONCE([imaxabs])
   if test "$ac_cv_have_decl_imaxabs" != yes; then
     HAVE_DECL_IMAXABS=0

diff --git a/modules/imaxabs b/modules/imaxabs
index 58a229e..630c00d 100644 (file)
--- a/modules/imaxabs
+++ b/modules/imaxabs
@@ -10,7 +10,7 @@ inttypes-incomplete
 
 configure.ac:
 gl_FUNC_IMAXABS
-if test $HAVE_DECL_IMAXABS = 0; then
+if test $ac_cv_func_imaxabs = no; then
   AC_LIBOBJ([imaxabs])
   gl_PREREQ_IMAXABS
 fi