Build:Replace soft links with file copy.

Some build environments do not support symbolic links. This patch
removes the symlinks previously used to build fip_create and instead
copies the relevant header files.
The original motivation for using symlinks was to avoid Trusted Firmware
library headers conflicting with headers in the compiler standard
include path. Copying the header files instead has the same effect.

Like other build artefacts, the copied files are listed in .gitignore.

The distclean targets have also been updated to remove the copies.

Change-Id: Ie8b67bcb133f7f1d660ae93b857950aa15e42b1e

.gitignore

@@ -14,3 +14,7 @@ tools/fip_create/fip_create
 tools/cert_create/src/*.o
 tools/cert_create/src/**/*.o
 tools/cert_create/cert_create
+
+# Ignore header files copied.
+tools/fip_create/firmware_image_package.h
+tools/fip_create/uuid.h

tools/fip_create/Makefile

@@ -34,6 +34,7 @@ include ${MAKE_HELPERS_DIRECTORY}build_env.mk
 
 PROJECT = fip_create
 OBJECTS = fip_create.o
+COPIED_H_FILES := uuid.h firmware_image_package.h
 
 CFLAGS = -Wall -Werror -pedantic -std=c99
 ifeq (${DEBUG},1)
@@ -42,13 +43,12 @@ else
   CFLAGS += -O2
 endif
 
-# Make soft links and include from local directory otherwise wrong headers
-# could get pulled in from firmware tree.
+# Only include from local directory (see comment below).
 INCLUDE_PATHS = -I.
 
 CC := gcc
 
-.PHONY: all clean
+.PHONY: all clean distclean
 
 all: ${PROJECT}
 
@@ -59,10 +59,25 @@ ${PROJECT}: ${OBJECTS} Makefile
 	@echo "Built $@ successfully"
 	@${ECHO_BLANK_LINE}
 
-%.o: %.c %.h Makefile
+%.o: %.c %.h ${COPIED_H_FILES} Makefile
 	@echo "  CC      $<"
 	${Q}${CC} -c ${CFLAGS} ${INCLUDE_PATHS} $< -o $@
 
+#
+# Copy required library headers to a local directory so they can be included
+# by this project without adding the library directories to the system include
+# path. This avoids conflicts with definitions in the compiler standard
+# include path.
+#
+uuid.h : ../../include/stdlib/sys/uuid.h
+	$(call SHELL_COPY,$<,$@)
+
+firmware_image_package.h : ../../include/common/firmware_image_package.h
+	$(call SHELL_COPY,$<,$@)
+
 clean:
 	$(call SHELL_DELETE_ALL, ${PROJECT} ${OBJECTS})
 
+distclean: clean
+	$(call SHELL_DELETE_ALL, ${COPIED_H_FILES})
+

tools/fip_create/firmware_image_package.h

-../../include/common/firmware_image_package.h
\ No newline at end of file

tools/fip_create/uuid.h

-../../include/stdlib/sys/uuid.h
\ No newline at end of file