Introduce build option to override libc
This patch introduces a build option 'OVERRIDE_LIBC' that platforms
can set to override libc from the BL image. The default value is '0'
to keep the library.
Change-Id: I10a0b247f6a782eeea4a0359e30a8d79b1e9e4e1
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/Makefile b/Makefile
index 0169f3f..34f6890 100644
--- a/Makefile
+++ b/Makefile
@@ -248,7 +248,6 @@
# Common sources and include directories
################################################################################
include lib/compiler-rt/compiler-rt.mk
-include lib/libc/libc.mk
BL_COMMON_SOURCES += common/bl_common.c \
common/tf_log.c \
@@ -390,6 +389,13 @@
include ${AARCH32_SP_MAKE}
endif
+endif
+
+################################################################################
+# Include libc if not overridden
+################################################################################
+ifeq (${OVERRIDE_LIBC},0)
+include lib/libc/libc.mk
endif
################################################################################
@@ -595,6 +601,7 @@
$(eval $(call assert_boolean,HW_ASSISTED_COHERENCY))
$(eval $(call assert_boolean,MULTI_CONSOLE_API))
$(eval $(call assert_boolean,NS_TIMER_SWITCH))
+$(eval $(call assert_boolean,OVERRIDE_LIBC))
$(eval $(call assert_boolean,PL011_GENERIC_UART))
$(eval $(call assert_boolean,PROGRAMMABLE_RESET_ADDRESS))
$(eval $(call assert_boolean,PSCI_EXTENDED_STATE_ID))