All of lore.kernel.org
 help / color / mirror / Atom feed
From: Khem Raj <raj.khem@gmail.com>
To: openembedded-core@lists.openembedded.org
Subject: [PATCH 01/10] gcc: Introduce a knob to configure gcc to default to PIE
Date: Wed, 28 Jun 2017 09:04:14 -0700	[thread overview]
Message-ID: <d4f2bfa0a53e7da46254275e294b12a41efd80a0.1498665211.git.raj.khem@gmail.com> (raw)
In-Reply-To: <cover.1498665211.git.raj.khem@gmail.com>

GCCPIE flag which is empty by default adds "--enable-default-pie"
configure option for harderned distros

We do not require to add -fpie -pie flag externally anymore

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/conf/distro/include/security_flags.inc        | 4 +++-
 meta/recipes-devtools/gcc/gcc-configure-common.inc | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/meta/conf/distro/include/security_flags.inc b/meta/conf/distro/include/security_flags.inc
index 38164d08b8..f2eb224a77 100644
--- a/meta/conf/distro/include/security_flags.inc
+++ b/meta/conf/distro/include/security_flags.inc
@@ -5,6 +5,8 @@
 # From a Yocto Project perspective, this file is included and tested
 # in the DISTRO="poky-lsb" configuration.
 
+GCCPIE ?= "--enable-default-pie"
+
 # _FORTIFY_SOURCE requires -O1 or higher, so disable in debug builds as they use
 # -O0 which then results in a compiler warning.
 lcl_maybe_fortify = "${@base_conditional('DEBUG_BUILD','1','','-D_FORTIFY_SOURCE=2',d)}"
@@ -12,7 +14,7 @@ lcl_maybe_fortify = "${@base_conditional('DEBUG_BUILD','1','','-D_FORTIFY_SOURCE
 # Error on use of format strings that represent possible security problems
 SECURITY_STRINGFORMAT ?= "-Wformat -Wformat-security -Werror=format-security"
 
-SECURITY_CFLAGS ?= "-fstack-protector-strong -pie -fpie ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}"
+SECURITY_CFLAGS ?= "-fstack-protector-strong ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}"
 SECURITY_NO_PIE_CFLAGS ?= "-fstack-protector-strong ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}"
 
 SECURITY_LDFLAGS ?= "-fstack-protector-strong -Wl,-z,relro,-z,now"
diff --git a/meta/recipes-devtools/gcc/gcc-configure-common.inc b/meta/recipes-devtools/gcc/gcc-configure-common.inc
index 63fa1d9686..e2ce234aa1 100644
--- a/meta/recipes-devtools/gcc/gcc-configure-common.inc
+++ b/meta/recipes-devtools/gcc/gcc-configure-common.inc
@@ -22,6 +22,8 @@ EXTRA_OECONF_INITIAL ?= ""
 GCCMULTILIB ?= "--disable-multilib"
 GCCTHREADS ?= "posix"
 
+GCCPIE ??= ""
+
 EXTRA_OECONF = "\
     ${@['--enable-clocale=generic', ''][d.getVar('USE_NLS') != 'no']} \
     --with-gnu-ld \
@@ -29,6 +31,7 @@ EXTRA_OECONF = "\
     --enable-languages=${LANGUAGES} \
     --enable-threads=${GCCTHREADS} \
     ${GCCMULTILIB} \
+    ${GCCPIE} \
     --enable-c99 \
     --enable-long-long \
     --enable-symvers=gnu \
-- 
2.13.2



  reply	other threads:[~2017-06-28 16:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-28 16:04 [PATCH 00/10] Rework GCC PIE and security flags (take 2) Khem Raj
2017-06-28 16:04 ` Khem Raj [this message]
2017-06-28 16:04 ` [PATCH 02/10] security_flags.inc: Delete pinnings for SECURITY_NO_PIE_CFLAGS Khem Raj
2017-06-28 16:04 ` [PATCH 03/10] distutils, setuptools: Delete use of SECURITY_NO_PIE_CFLAGS Khem Raj
2017-06-28 16:04 ` [PATCH 04/10] gcc7: Enable static PIE Khem Raj
2017-06-28 16:04 ` [PATCH 05/10] gcc: Link libssp_nonshared.a only on musl targets Khem Raj
2017-06-28 16:04 ` [PATCH 06/10] libunwind: We set -fPIE in security flags now if gcc is not configured for default PIE Khem Raj
2017-06-28 16:04 ` [PATCH 07/10] valgrind: Remove -no-pie from cflags Khem Raj
2017-06-28 16:04 ` [PATCH 08/10] iptables: Apply 0001-fix-build-with-musl.patch unconditionally Khem Raj
2017-06-28 16:04 ` [PATCH 09/10] icu: Fix build with glibc 2.26 Khem Raj
2017-06-28 16:04 ` [PATCH 10/10] gstreamer1.0-plugins-bad: Fix missing library with bcm egl Khem Raj
  -- strict thread matches above, loose matches on Subject: below --
2017-06-14 15:23 [PATCH 00/10] Add GCCPIE knob to configure gcc with --enable-default-pie Khem Raj
2017-06-14 15:23 ` [PATCH 01/10] gcc: Introduce a knob to configure gcc to default to PIE Khem Raj

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=d4f2bfa0a53e7da46254275e294b12a41efd80a0.1498665211.git.raj.khem@gmail.com \
    --to=raj.khem@gmail.com \
    --cc=openembedded-core@lists.openembedded.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.