ckermit: Fix build with GCC-15

Also fix native pieces to build with gcc-14 while here

Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit f8ece969ea)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

meta-oe/recipes-support/ckermit/ckermit_302.bb

@@ -28,7 +28,7 @@ do_compile () {
     # The original makefile doesn't differentiate between CC and CC_FOR_BUILD,
     # so we build wart manually. Note that you need a ckwart.o with the proper
     # timestamp to make this hack work:
-    ${BUILD_CC} -c ckwart.c
+    ${BUILD_CC} -DMAINTYPE=int -c -o ckwart.o ckwart.c
     ${BUILD_CC} -o wart ckwart.o
     ./wart ckcpro.w ckcpro.c
 
@@ -45,7 +45,8 @@ do_compile () {
         -DNORESEND -DNOAUTODL -DNOSTREAMING -DNOHINTS -DNOCKXYZ -DNOLEARN \
         -DNOMKDIR -DNOPERMS -DNOCKTIMERS -DNOCKREGEX -DNOREALPATH \
         -DCK_SMALL -DNOLOGDIAL -DNORENAME -DNOWHATAMI \
-        -DNOARROWKEYS -DMAINTYPE=int"
+        -DNOARROWKEYS -DMAINTYPE=int \
+        -D_DEFAULT_SOURCE -ansi"
 }
 
 do_install () {