Put back our old workaround for machines that declare cbrt() in math.h but

fail to provide the function itself.  Not sure how we escaped testing anything
later than 7.3 on such cases, but they still exist, as per André Volpato's
report about AIX 5.3.

diff --git a/src/backend/utils/adt/float.c b/src/backend/utils/adt/float.c
index 9f0fa0de32d2e971588841c72935cb8404b66d97..7a115371c959ecfbdcf30f8764bbc4347f7c35fe 100644 (file)
--- a/src/backend/utils/adt/float.c
+++ b/src/backend/utils/adt/float.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.94 2003/09/25 06:58:03 petere Exp $
+ *       $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.94.2.1 2009/03/04 22:08:53 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -71,6 +71,15 @@
 
 
 #ifndef HAVE_CBRT
+/*
+ * Some machines (in particular, some versions of AIX) have an extern
+ * declaration for cbrt() in <math.h> but fail to provide the actual
+ * function, which causes configure to not set HAVE_CBRT.  Furthermore,
+ * their compilers spit up at the mismatch between extern declaration
+ * and static definition.  We work around that here by the expedient
+ * of a #define to make the actual name of the static function different.
+ */
+#define cbrt my_cbrt
 static double cbrt(double x);
 #endif   /* HAVE_CBRT */