Make sure only supported compiler options are used
Import "cc-option" shell function from kernel and
use it to get the correct ARM GCC options for individual CPUs
Patch by Peter Pearse, 30 Jun 2005
diff --git a/CHANGELOG b/CHANGELOG
index 4498d8a..fc1f8e3 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,11 @@
Changes for U-Boot 1.1.4:
======================================================================
+* Make sure only supported compiler options are used
+ Import "cc-option" shell function from kernel and
+ use it to get the correct ARM GCC options for individual CPUs
+ Patch by Peter Pearse, 30 Jun 2005
+
* Fix 440GR to print correct cpu revision
Patch by Stefan Roese, 4 Oct 2005
diff --git a/config.mk b/config.mk
index ff83091..0f10439 100644
--- a/config.mk
+++ b/config.mk
@@ -86,6 +86,12 @@
HOSTSTRIP = strip
#########################################################################
+#
+# Option checker (courtesy linux kernel) to ensure
+# only supported compiler options are used
+#
+cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+ > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
#
# Include the make variables (CC, etc...)
diff --git a/cpu/arm1136/config.mk b/cpu/arm1136/config.mk
index ca9dc25..cbcf92b 100644
--- a/cpu/arm1136/config.mk
+++ b/cpu/arm1136/config.mk
@@ -21,6 +21,15 @@
# MA 02111-1307 USA
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
+ -msoft-float
# Make ARMv5 to allow more compilers to work, even though its v6.
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv5
+PLATFORM_CPPFLAGS += -march=armv5
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
+
diff --git a/cpu/arm720t/config.mk b/cpu/arm720t/config.mk
index 2d79709..e5dce9d 100644
--- a/cpu/arm720t/config.mk
+++ b/cpu/arm720t/config.mk
@@ -23,6 +23,14 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
+
+PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4 -mtune=arm7tdmi
diff --git a/cpu/arm920t/config.mk b/cpu/arm920t/config.mk
index cef7d26..3c7a279 100644
--- a/cpu/arm920t/config.mk
+++ b/cpu/arm920t/config.mk
@@ -22,6 +22,14 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
+
+PLATFORM_CPPFLAGS += -march=armv4
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4
diff --git a/cpu/arm925t/config.mk b/cpu/arm925t/config.mk
index cef7d26..3c7a279 100644
--- a/cpu/arm925t/config.mk
+++ b/cpu/arm925t/config.mk
@@ -22,6 +22,14 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
+
+PLATFORM_CPPFLAGS += -march=armv4
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4
diff --git a/cpu/arm926ejs/config.mk b/cpu/arm926ejs/config.mk
index cef7d26..3c7a279 100644
--- a/cpu/arm926ejs/config.mk
+++ b/cpu/arm926ejs/config.mk
@@ -22,6 +22,14 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
+
+PLATFORM_CPPFLAGS += -march=armv4
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4
diff --git a/cpu/ixp/config.mk b/cpu/ixp/config.mk
index 667adfc..2f735c5 100644
--- a/cpu/ixp/config.mk
+++ b/cpu/ixp/config.mk
@@ -25,6 +25,14 @@
BIG_ENDIAN = y
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float -mbig-endian
+ -msoft-float -mbig-endian
+
+PLATFORM_CPPFLAGS += -mbig-endian -march=armv4 -mtune=strongarm1100
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mbig-endian -mapcs-32 -march=armv4 -mtune=strongarm1100
diff --git a/cpu/lh7a40x/config.mk b/cpu/lh7a40x/config.mk
index cef7d26..5062ba2 100644
--- a/cpu/lh7a40x/config.mk
+++ b/cpu/lh7a40x/config.mk
@@ -22,6 +22,14 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
+
+PLATFORM_CPPFLAGS += -march=armv4
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# ========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4
diff --git a/cpu/pxa/config.mk b/cpu/pxa/config.mk
index 6030c49..0e38698 100644
--- a/cpu/pxa/config.mk
+++ b/cpu/pxa/config.mk
@@ -23,7 +23,15 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
#PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4 -mtune=strongarm1100
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv5 -mtune=xscale
+PLATFORM_CPPFLAGS += -march=armv5 -mtune=xscale
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# ========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
+
diff --git a/cpu/s3c44b0/config.mk b/cpu/s3c44b0/config.mk
index a1c5dd1..0052ba4 100644
--- a/cpu/s3c44b0/config.mk
+++ b/cpu/s3c44b0/config.mk
@@ -23,6 +23,14 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
+
+PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi -msoft-float
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# ========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4 -mtune=arm7tdmi -msoft-float
diff --git a/cpu/sa1100/config.mk b/cpu/sa1100/config.mk
index c40dcf8..3bed850 100644
--- a/cpu/sa1100/config.mk
+++ b/cpu/sa1100/config.mk
@@ -23,6 +23,14 @@
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
- -mshort-load-bytes -msoft-float
+ -msoft-float
+
+PLATFORM_CPPFLAGS += -march=armv4 -mtune=strongarm1100
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# ========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
-PLATFORM_CPPFLAGS += -mapcs-32 -march=armv4 -mtune=strongarm1100