Attempt at detecting 64bit compilation flags between gcc, old, and new versions of sun cc

Gcc accepts -m64, just as newer version of Suncc.
Older Suncc required -xarch=v9 (SPARC) or -xarch=amd64 (x86-64) to generate 64bit code.

1 files changed, 62 insertions, 3 deletions

diff --git a/configure.in b/configure.in
index d02d7f85..61d0e951 100644
--- a/configure.in
+++ b/configure.in
@@ -585,14 +585,73 @@ elif test "$ac_cv_uname_s" = "SunOS"; then
         ac_cv_ps_cols=9
         AC_MSG_RESULT([using nagios-plugins internal ps command (pst3) for solaris])
         if test `isainfo -b` = 64 ; then
-                PST3CFLAGS="-m64"
-                AC_SUBST(PST3CFLAGS)
-                AC_MSG_NOTICE([using 64bit pst3])       
+                pst3_use_64bit=1
+                AC_MSG_NOTICE([using 64bit pst3])
         else
                 AC_MSG_NOTICE([using 32bit pst3])
         fi
         EXTRAS_ROOT="$EXTRAS_ROOT pst3"
 
+        if test "$pst3_use_64bit" = 1; then
+                dnl Test if we can actually compile code in 64bit
+                old_cflags=$CFLAGS
+                CFLAGS="$CFLAGS -m64"
+                pst3_64bit_working=0
+                AC_RUN_IFELSE(
+                        [AC_LANG_PROGRAM([], [
+return sizeof(void*) == 8 ? 0 : 1;
+                        ])
+                ],[
+                        PST3CFLAGS="-m64"
+                        AC_SUBST(PST3CFLAGS)
+                        pst3_64bit_working=1
+                        AC_MSG_NOTICE([using -m64 for 64bit code])
+                ],[
+                        pst3_64bit_working=0
+                        AC_MSG_NOTICE([compiler do not like -m64])
+                ])
+                CFLAGS=$old_cflags
+                if test "$pst3_64bit_working" = 0; then
+                        old_cflags=$CFLAGS
+                        CFLAGS="$CFLAGS -xarch=v9"
+                        AC_RUN_IFELSE(
+                                [AC_LANG_PROGRAM([], [
+return sizeof(void*) == 8 ? 0 : 1;
+                                ])
+                        ],[
+                                PST3CFLAGS="-xarch=v9"
+                                AC_SUBST(PST3CFLAGS)
+                                pst3_64bit_working=1
+                                AC_MSG_NOTICE([using -xarch=v9 for 64bit code])
+                        ],[
+                                pst3_64bit_working=0
+                                AC_MSG_NOTICE([compiler do not like -xarch=v9])
+                        ])
+                        CFLAGS=$old_cflags
+                fi
+                if test "$pst3_64bit_working" = 0; then
+                        old_cflags=$CFLAGS
+                        CFLAGS="$CFLAGS -xarch=amd64"
+                        AC_RUN_IFELSE(
+                                [AC_LANG_PROGRAM([], [
+return sizeof(void*) == 8 ? 0 : 1;
+                                ])
+                        ],[
+                                PST3CFLAGS="-xarch=amd64"
+                                AC_SUBST(PST3CFLAGS)
+                                pst3_64bit_working=1
+                                AC_MSG_NOTICE([using -xarch=amd64 for 64bit code])
+                        ],[
+                                pst3_64bit_working=0
+                                AC_MSG_NOTICE([compiler do not like -xarch=amd64])
+                        ])
+                        CFLAGS=$old_cflags
+                fi
+                if test "$pst3_64bit_working" = 0; then
+                        AC_MSG_ERROR([I don't know how to build a 64-bit object!])
+                fi
+        fi
+
 dnl Removing this for the moment - Ton
 dnl Using /usr/ucb/ps on Solaris systems, to avoid truncation
 dnl Limitation that command name is not available