[Bug 2200] RFE: Solaris should compile Xserver and X11 applications with -xcheck=stkovf

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https://bugs.freedesktop.org/show_bug.cgi?id=2200          
     




------- Additional Comments From alan.coopersmith at sun.com  2005-03-07 13:54 -------
To use the mapfiles mentioned, the flags would be:
-Wl,-M,/usr/lib/ld/map.noexstk -Wl,-M,/usr/lib/ld/map.noexdata

The Xorg sun.cf already sets the first flag on Solaris 9 and later - see the
NonExecStackLoadFlag setting.   I've never gotten around to adding the second
for Solaris 10 - it would have to be x86 only since it will break the SPARC PLT
as noted in the comments in the file.   (When building the binaries distributed
with Solaris we actually use custom mapfiles which contain the commands noted
in the above, plus those from the /usr/lib/ld/map.pagealign and on SPARC
the non-executable bss flag described in the comments in the map.noexdata.)

For autoconf use, the STSF configure.ac shows an example of one way to detect
and use these:
case "$target" in
        *-*-solaris*)
                AC_CHECK_FILE([/usr/lib/ld/map.noexstk],[LDFLAGS="${LDFLAGS}
-Wl,-M/usr/lib/ld/map.noexstk"])
                AC_CHECK_FILE([/usr/lib/ld/map.pagealign],[LDFLAGS="${LDFLAGS}
-Wl,-M/usr/lib/ld/map.pagealign" ; SHAREDLIB_LDFLAGS="${SHAREDLIB_LDFLAGS}
-Wl,-M/usr/lib/ld/map.pagealign"])
                ;;
esac          
     
     
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