hpux10 has gmtime_r with wrong return type, breaking asn.1 encoder

The hpux10 gmtime_r returns int (0 means success), whereas the POSIX
gmtime_r returns a pointer (NULL means failure).

* configure.in: Check return type of gmtime_r, and define GMTIME_R_RETURNS_INT
if it returns int.  If the return type can't be determined, pretend the
function isn't there.

ticket: new
status: open

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@17117 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/include/ChangeLog b/src/include/ChangeLog
index d4c0cded038736157ed2ca60453167664cf63606..b1de45f4926e6d535a4ff882321c855eccd46a97 100644 (file)
--- a/src/include/ChangeLog
+++ b/src/include/ChangeLog
@@ -1,3 +1,9 @@
+2005-03-04  Ken Raeburn  <raeburn@mit.edu>
+
+       * configure.in: Check return type of gmtime_r, and define
+       GMTIME_R_RETURNS_INT if it returns int.  If the return type can't
+       be determined, pretend the function isn't there.
+
 2005-02-08  Ken Raeburn  <raeburn@mit.edu>
 
        * k5-platform.h (PROGRAM_EXITING) [__GNUC__ && !_WIN32 &&

diff --git a/src/include/configure.in b/src/include/configure.in
index d3ded13b6e9698fcb3298306947d38acf5c34dea..721865be24563b4977e8a419ccda816a311e0d7e 100644 (file)
--- a/src/include/configure.in
+++ b/src/include/configure.in
@@ -98,6 +98,29 @@ if test "$ac_cv_func_getpwuid_r" = yes; then
   fi
 fi
 
+if test "$ac_cv_func_gmtime_r" = yes; then
+  AC_MSG_CHECKING([whether gmtime_r returns int])
+  AC_CACHE_VAL(krb5_cv_gmtime_r_returns_int,
+  [AC_TRY_COMPILE([#include <time.h>
+   extern int gmtime_r ();], [1;], return_int=yes, return_int=no)
+   AC_TRY_COMPILE([#include <time.h>
+   extern struct tm *gmtime_r ();], [1;], return_ptr=yes, return_ptr=no)
+   case $return_int/$return_ptr in
+     yes/no) krb5_cv_gmtime_r_returns_int=yes ;;
+     no/yes) krb5_cv_gmtime_r_returns_int=no ;;
+     *)      # Can't figure it out, punt the function.
+             ac_cv_func_gmtime_r=no ;;
+   esac])
+  if test "$ac_cv_func_gmtime_r" = no; then
+    AC_MSG_RESULT(unknown -- ignoring gmtime_r)
+  else
+    AC_MSG_RESULT($krb5_cv_gmtime_r_returns_int)
+    if test "$krb5_cv_gmtime_r_returns_int" = yes; then
+      AC_DEFINE(GMTIME_R_RETURNS_INT,1,[Define if gmtime_r returns int instead of struct tm pointer, as on old HP-UX systems.])
+    fi
+  fi
+fi
+
 AC_CHECK_FUNC(getservbyname_r,[
 ac_cv_func_getservbyname_r=yes
 if test "$ac_cv_func_getservbyname_r" = yes; then