From d8830b1448809b84ed95047a90a6793d59527ca0 Mon Sep 17 00:00:00 2001
From: Marti Bolivar <mbolivar@leaflabs.com>
Date: Sun, 5 Aug 2012 13:27:13 -0400
Subject: Add support for ARM's GCC ARM embedded toolchain.

Based on patches provided by Hanspeter Portner:

http://forums.leaflabs.com/topic.php?id=1717#post-11812
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
---
 support/make/build-rules.mk | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'support/make/build-rules.mk')

diff --git a/support/make/build-rules.mk b/support/make/build-rules.mk
index 3d541ba..d180c89 100644
--- a/support/make/build-rules.mk
+++ b/support/make/build-rules.mk
@@ -22,6 +22,8 @@ ifndef V
    SILENT_OBJDUMP  = @echo '  [OBJDUMP]  ' $(OBJDUMP);
 endif
 
+# Extra build configuration
+
 BUILDDIRS :=
 TGT_BIN   :=
 
@@ -29,6 +31,17 @@ CFLAGS   = $(GLOBAL_CFLAGS) $(TGT_CFLAGS)
 CXXFLAGS = $(GLOBAL_CXXFLAGS) $(TGT_CXXFLAGS)
 ASFLAGS  = $(GLOBAL_ASFLAGS) $(TGT_ASFLAGS)
 
+# Hacks to determine extra libraries we need to link against based on
+# the toolchain. The default specifies no extra libraries, but it can
+# be overridden.
+LD_TOOLCHAIN_PATH := $(LDDIR)/toolchains/generic
+ifneq ($(findstring ARM/embedded,$(shell $(CC) --version)),)
+# GCC ARM Embedded, https://launchpad.net/gcc-arm-embedded/
+LD_TOOLCHAIN_PATH := $(LDDIR)/toolchains/gcc-arm-embedded
+endif
+# Add toolchain directory to LD search path
+TOOLCHAIN_LDFLAGS := -L $(LD_TOOLCHAIN_PATH)
+
 # General directory independent build rules, generate dependency information
 $(BUILD_PATH)/%.o: %.c
 	$(SILENT_CC) $(CC) $(CFLAGS) -MMD -MP -MF $(@:%.o=%.d) -MT $@ -o $@ -c $<
-- 
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