[svn-r14595] Purpose: Patch the latest Cygwin's incompatibility with timzezone variable

Description:
We discovered that there was a problem with the latest cygwin DLL, in that it doesn't recognize the global variable 'timezone'.  This is a problem on cygwin's side, not ours.  Instead, we avoid the problem in configure with a case statement.

We didn't get this out in time for the release, but we can offer a patch instead.

Tested:
Cygwin on WinXP
All changes are in a cygwin 'case' clause, so shouldn't affect other platforms

2 files changed, 28 insertions, 11 deletions

diff --git a/configure b/configure
index d8da744..f2d64cc 100755
--- a/configure
+++ b/configure
@@ -45711,15 +45711,22 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 { echo "$as_me:$LINENO: checking for global timezone variable" >&5
 echo $ECHO_N "checking for global timezone variable... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
+
+case "`uname`" in
+  CYGWIN*)
+    { echo "$as_me:$LINENO: result: disabled in CYGWIN" >&5
+echo "${ECHO_T}disabled in CYGWIN" >&6; }
+    ;;
+  *)
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-#include <sys/time.h>
-#include <time.h>
+    #include <sys/time.h>
+    #include <time.h>
 #ifdef FC_DUMMY_MAIN
 #ifndef FC_DUMMY_MAIN_EQ_F77
 #  ifdef __cplusplus
@@ -45759,7 +45766,7 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_TIMEZONE 1
 _ACEOF
 
-{ echo "$as_me:$LINENO: result: yes" >&5
+    { echo "$as_me:$LINENO: result: yes" >&5
 echo "${ECHO_T}yes" >&6; }
 else
   echo "$as_me: failed program was:" >&5
@@ -45771,6 +45778,8 @@ fi
 
 rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
       conftest$ac_exeext conftest.$ac_ext
+    ;;
+esac
 
 { echo "$as_me:$LINENO: checking whether struct tm is in sys/time.h or time.h" >&5
 echo $ECHO_N "checking whether struct tm is in sys/time.h or time.h... $ECHO_C" >&6; }
diff --git a/configure.in b/configure.in
index 2c45d38..7461c56 100644
--- a/configure.in
+++ b/configure.in
@@ -1728,13 +1728,21 @@ AC_MSG_RESULT([no]))
 
 dnl Check whether the global variable `timezone' is defined.
 AC_MSG_CHECKING([for global timezone variable])
-AC_TRY_LINK([
-#include <sys/time.h>
-#include <time.h>], [timezone=0;],
-AC_DEFINE([HAVE_TIMEZONE], [1],
-          [Define if `timezone' is a global variable])
-AC_MSG_RESULT([yes]),
-AC_MSG_RESULT([no]))
+
+case "`uname`" in
+  CYGWIN*)
+    AC_MSG_RESULT([disabled in CYGWIN])
+    ;;
+  *)
+    AC_TRY_LINK([
+    #include <sys/time.h>
+    #include <time.h>], [timezone=0;],
+    AC_DEFINE([HAVE_TIMEZONE], [1],
+              [Define if `timezone' is a global variable])
+    AC_MSG_RESULT([yes]),
+    AC_MSG_RESULT([no]))
+    ;;
+esac
 
 dnl Check whether `struct timezone' is defined.
 AC_STRUCT_TIMEZONE