@@ -155,3 +155,18 @@ config BR2_GCC_ENABLE_OPENMP
depends on !BR2_PTHREADS_NONE && !BR2_avr32 && !BR2_arc
help
Enable OpenMP support for the compiler
+
+config BR2_GCC_ENABLE_LIBMUDFLAP
+ bool "Enable libmudflap support"
+ # There are architectures, or specific configurations for
+ # which mudflap is not supported.
+ depends on !BR2_avr32 && !BR2_bfin && !BR2_ARM_INSTRUCTIONS_THUMB &&!BR2_powerpc_SPE
+ help
+ libmudflap is a gcc library used for the mudflap pointer
+ debugging functionality. It is only needed if you intend to
+ use the -fmudflap gcc flag.
+
+ See http://gcc.gnu.org/wiki/Mudflap_Pointer_Debugging and
+ the help of the gcc -fmudflap option for more details.
+
+ If you're unsure, leave this option disabled.
@@ -116,6 +116,14 @@ ifeq ($(BR2_INSTALL_OBJC),y)
HOST_GCC_FINAL_USR_LIBS += libobjc
endif
+ifeq ($(BR2_GCC_ENABLE_LIBMUDFLAP),y)
+ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
+HOST_GCC_FINAL_USR_LIBS += libmudflapth
+else
+HOST_GCC_FINAL_USR_LIBS += libmudflap
+endif
+endif
+
ifneq ($(HOST_GCC_FINAL_USR_LIBS),)
define HOST_GCC_FINAL_INSTALL_USR_LIBS
mkdir -p $(TARGET_DIR)/usr/lib
@@ -119,6 +119,12 @@ else
HOST_GCC_COMMON_CONF_OPT += --disable-tls
endif
+ifeq ($(BR2_GCC_ENABLE_LIBMUDFLAP),y)
+HOST_GCC_COMMON_CONF_OPT += --enable-libmudflap
+else
+HOST_GCC_COMMON_CONF_OPT += --disable-libmudflap
+endif
+
ifeq ($(BR2_PTHREADS_NONE),y)
HOST_GCC_COMMON_CONF_OPT += \
--disable-threads \
@@ -192,25 +198,9 @@ HOST_GCC_COMMON_CONF_OPT += \
--with-bugurl="http://bugs.buildroot.net/"
endif
-# AVR32 GCC special configuration
-ifeq ($(BR2_avr32),y)
-HOST_GCC_COMMON_CONF_OPT += --disable-libmudflap
-endif
-
-# ARM Thumb and mudflap aren't friends
-ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
-HOST_GCC_COMMON_CONF_OPT += --disable-libmudflap
-endif
-
-# Blackfin doesn't do mudflap
-ifeq ($(BR2_bfin),y)
-HOST_GCC_COMMON_CONF_OPT += --disable-libmudflap
-endif
-
-# Disable mudflap and enable proper double/long double for SPE ABI
+# Enable proper double/long double for SPE ABI
ifeq ($(BR2_powerpc_SPE),y)
HOST_GCC_COMMON_CONF_OPT += \
- --disable-libmudflap \
--enable-e500_double \
--with-long-double-128
endif
The mudflap library is only useful if one uses the -fmudflap gcc option, to do more checks on pointers/arrays. This commit adds an option to enable/disable mudflap support at the gcc level. By default, it is disabled, which saves a little bit of build time compared to the default of gcc which consists in enabling mudflap support. Since mudflap is now disabled by default, and ensured to be enabled on some platforms where it is not available, some gcc.mk code that was used to disable mudflap in problematic configurations can be removed. Whether -fmudflap is used when building is left to the user. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> --- package/gcc/Config.in.host | 15 +++++++++++++++ package/gcc/gcc-final/gcc-final.mk | 8 ++++++++ package/gcc/gcc.mk | 24 +++++++----------------- 3 files changed, 30 insertions(+), 17 deletions(-)