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| author | Marek Polacek <polacek@redhat.com> | 2023-08-07 13:07:12 +0200 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2023-08-12 09:58:23 +0930 |
| commit | 60b42421e900f9bb186c306a657f41b88e422bcd (patch) | |
| tree | 129840da06f088a9758bcb3b903fb476bdd5323c /zlib | |
| parent | 947edb094ece682e6642c497a871749e8c12d5a5 (diff) | |
| download | gdb-60b42421e900f9bb186c306a657f41b88e422bcd.zip gdb-60b42421e900f9bb186c306a657f41b88e422bcd.tar.gz gdb-60b42421e900f9bb186c306a657f41b88e422bcd.tar.bz2 | |
configure: Implement --enable-host-pie
This patch implements the --enable-host-pie configure option which
makes the compiler executables PIE. This can be used to enhance
protection against ROP attacks, and can be viewed as part of a wider
trend to harden binaries.
Co-Authored by: Iain Sandoe <iain@sandoe.co.uk>
* configure.ac (--enable-host-pie): New check. Set PICFLAG after this
check.
intl/
* configure.ac (--enable-host-shared): Don't set PICFLAG here.
(--enable-host-pie): New check. Set PICFLAG after this check.
libdecnumber/
* configure.ac (--enable-host-shared): Don't set PICFLAG here.
(--enable-host-pie): New check. Set PICFLAG after this check.
zlib/
* configure.ac (--enable-host-shared): Don't set PICFLAG here.
(--enable-host-pie): New check. Set PICFLAG after this check.
Diffstat (limited to 'zlib')
| -rw-r--r-- | zlib/configure.ac | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/zlib/configure.ac b/zlib/configure.ac index ec73c21..b50b9c7 100644 --- a/zlib/configure.ac +++ b/zlib/configure.ac @@ -121,11 +121,26 @@ else multilib_arg= fi +# Enable --enable-host-shared. AC_ARG_ENABLE(host-shared, [AS_HELP_STRING([--enable-host-shared], - [build host code as shared libraries])], -[PICFLAG=-fPIC], [PICFLAG=]) -AC_SUBST(PICFLAG) + [build host code as shared libraries])]) +AC_SUBST(enable_host_shared) + +# Enable --enable-host-pie. +AC_ARG_ENABLE(host-pie, +[AS_HELP_STRING([--enable-host-pie], + [build host code as PIE])]) +AC_SUBST(enable_host_pie) + +if test x$enable_host_shared = xyes; then + PICFLAG=-fPIC +elif test x$enable_host_pie = xyes; then + PICFLAG=-fPIE +else + PICFLAG= +fi +AC_SUBST(PICFLAG) AC_CONFIG_FILES([Makefile]) AC_OUTPUT |