| Message ID | 20171227145003.1669-1-stefan.froberg@petroprogram.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/1] gcc: Add support for --enable-default-pie configure option. | expand |
Hello, On Wed, 27 Dec 2017 16:50:03 +0200, Stefan Fröberg wrote: > With this option GCC will make PIE binaries by default. To override this > default behaviour, use -no-pie > > https://gcc.gnu.org/onlinedocs/gcc-6.2.0/gcc/Link-Options.html > > Signed-off-by: Stefan Fröberg <stefan.froberg@petroprogram.com> Here as well, I'd like the commit log (and Config.in help text) to include some explanations as to *why* one would want to do this. Also, wouldn't we instead want a more global option that would also work with external toolchains, where the compiler wrapper passes the right gcc arguments ? Best regards, Thomas
diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host index 70cce0a5c5..bf646fa07b 100644 --- a/package/gcc/Config.in.host +++ b/package/gcc/Config.in.host @@ -152,3 +152,13 @@ config BR2_GCC_ENABLE_GRAPHITE comment "graphite support needs gcc >= 5.x" depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_5 + +config BR2_GCC_ENABLE_DEFAULT_PIE + bool "Enable default PIE support" + depends on BR2_TOOLCHAIN_GCC_AT_LEAST_6 + help + This option enables the GCC to make PIE + binaries by default. + +comment "default PIE support needs gcc >= 6.x" + depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_6 diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk index 27fc1e987c..0910fb3932 100644 --- a/package/gcc/gcc.mk +++ b/package/gcc/gcc.mk @@ -183,6 +183,10 @@ else HOST_GCC_COMMON_CONF_OPTS += --without-isl --without-cloog endif +ifeq ($(BR2_GCC_ENABLE_DEFAULT_PIE),y) +HOST_GCC_COMMON_CONF_OPTS += --enable-default-pie +endif + ifeq ($(BR2_arc)$(BR2_or1k),y) HOST_GCC_COMMON_DEPENDENCIES += host-flex host-bison endif
With this option GCC will make PIE binaries by default. To override this default behaviour, use -no-pie https://gcc.gnu.org/onlinedocs/gcc-6.2.0/gcc/Link-Options.html Signed-off-by: Stefan Fröberg <stefan.froberg@petroprogram.com> --- package/gcc/Config.in.host | 10 ++++++++++ package/gcc/gcc.mk | 4 ++++ 2 files changed, 14 insertions(+)