From 2e544471ae719757a0fec2a686bdeb7a97540c90 Mon Sep 17 00:00:00 2001 From: kosaki Date: Sat, 16 Mar 2013 05:06:32 +0000 Subject: [PATCH] * configure.in (_FORTIFY_SOURCE): added a few comments. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39771 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ChangeLog | 4 ++++ configure.in | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/ChangeLog b/ChangeLog index 14c41aad7a..aed51302d9 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +Fri Mar 15 14:45:02 2013 KOSAKI Motohiro + + * configure.in (_FORTIFY_SOURCE): added a few comments. + Fri Mar 15 14:17:55 2013 KOSAKI Motohiro * thread_pthread.c (numberof): renamed from ARRAY_SIZE() because diff --git a/configure.in b/configure.in index d166664a7f..89422b4f72 100644 --- a/configure.in +++ b/configure.in @@ -684,6 +684,10 @@ if test "$GCC" = yes; then test "${debugflags+set}" || {RUBY_TRY_CFLAGS(-g3, [debugflags=-g3])} # -D_FORTIFY_SOURCE + # When defined _FORTIFY_SOURCE, glibc enables some additional sanity + # argument check. The performance drop is very little and Ubuntu enables + # _FORTIFY_SOURCE=2 by default. So, let's support it for protecting us from + # a mistake of silly C extensions. RUBY_TRY_CFLAGS(-D_FORTIFY_SOURCE=2, [RUBY_APPEND_OPTION(XCFLAGS, -D_FORTIFY_SOURCE=2)]) # -fstack-protector