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| author | Nick Mathewson <nickm@torproject.org> | 2013-10-21 13:07:47 -0400 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2013-10-21 13:07:47 -0400 |
| commit | 21ac292820da5784cf3c87e77df57b7594071d09 (patch) | |
| tree | 9d0bad038aeeaef805b7b059be3214d6a0e312b6 /configure.ac | |
| parent | 17d368281ad374908fb019e29f3f012659be010c (diff) | |
| download | tor-21ac292820da5784cf3c87e77df57b7594071d09.tar tor-21ac292820da5784cf3c87e77df57b7594071d09.tar.gz | |
Give a better warning when stack protection breaks linking.
Fix for 9948; patch from Benedikt Gollatz.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 77767c52a..f1fa8812f 100644 --- a/configure.ac +++ b/configure.ac @@ -589,7 +589,16 @@ if test x$enable_gcc_hardening != xno; then if test x$have_clang = xyes; then TOR_CHECK_CFLAGS(-Qunused-arguments) fi - TOR_CHECK_CFLAGS(-fstack-protector-all) + TOR_CHECK_CFLAGS(-fstack-protector-all, also_link) + AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all]) + AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all]) + AS_VAR_IF(can_compile, [yes], + AS_VAR_IF(can_link, [yes], + [], + AC_MSG_ERROR([We tried to build with stack protection; it looks like your compiler supports it but your libc does not provide it. Are you missing libssp? (You can --disable-gcc-hardening to ignore this error.)])) + ) + AS_VAR_POPDEF([can_link]) + AS_VAR_POPDEF([can_compile]) TOR_CHECK_CFLAGS(-Wstack-protector) TOR_CHECK_CFLAGS(-fwrapv) TOR_CHECK_CFLAGS(--param ssp-buffer-size=1) |