binman: Add a Makefile for test-program compilation

These test programs are includedd as binary files in U-Boot to avoid
having to build them (and associated toolchain differences). Instructions
on building are in the files themselves, but it seems better to provide
a Makefile which can be manually run when desired.

Add a Makefile, separate from the normal build system, to handle this.

Signed-off-by: Simon Glass <sjg@chromium.org>

tools/binman/test/Makefile

+#
+# Builds test programs
+#
+# Copyright (C) 2017 Google, Inc
+# Written by Simon Glass <sjg@chromium.org>
+#
+# SPDX-License-Identifier:      GPL-2.0+
+#
+
+CFLAGS := -march=i386 -m32 -nostdlib -I ../../../include
+
+LDS_UCODE := -T u_boot_ucode_ptr.lds
+
+TARGETS = u_boot_ucode_ptr u_boot_no_ucode_ptr
+
+all: $(TARGETS)
+
+u_boot_no_ucode_ptr: CFLAGS += $(LDS_UCODE)
+u_boot_no_ucode_ptr: u_boot_no_ucode_ptr.c
+
+u_boot_ucode_ptr: CFLAGS += $(LDS_UCODE)
+u_boot_ucode_ptr: u_boot_ucode_ptr.c
+
+clean:
+	rm -f $(TARGETS)
+
+help:
+	@echo "Makefile for binman test programs"
+	@echo
+	@echo "Intended for use on x86 hosts"
+	@echo
+	@echo "Targets:"
+	@echo
+	@echo -e "\thelp	- Print help (this is it!)"
+	@echo -e "\tall	- Builds test programs (default targget)"
+	@echo -e "\tclean	- Delete output files"

tools/binman/test/u_boot_no_ucode_ptr.c

@@ -5,10 +5,6 @@
  *
  * Simple program to create a bad _dt_ucode_base_size symbol to create an
  * error when it is used. This is used by binman tests.
- *
- * Build with:
- * cc -march=i386 -m32 -o u_boot_no_ucode_ptr -T u_boot_ucode_ptr.lds \
-	-nostdlib u_boot_no_ucode_ptr.c
  */
 
 static unsigned long not__dt_ucode_base_size[2]

tools/binman/test/u_boot_ucode_ptr.c

@@ -5,10 +5,6 @@
  *
  * Simple program to create a _dt_ucode_base_size symbol which can be read
  * by 'nm'. This is used by binman tests.
- *
- * Build with:
- * cc -march=i386 -m32 -o u_boot_ucode_ptr -T u_boot_ucode_ptr.lds -nostdlib \
-	u_boot_ucode_ptr.c
  */
 
 static unsigned long _dt_ucode_base_size[2]