Make:Improve version string generation portability
To get round problems encountered when building in a DOS build
environment the generation of the .o file containing build identifier
strings is modified.
The problems encounterred were:
1. DOS echo doesn't strip ' characters from the output text.
2. git is not available from CMD.EXE so the BUILD_STRING value needs
some other origin.
A BUILD_STRING value of "development build" is used for now.
MAKE_BUILD_STRINGS is used to customise build string generation in a DOS
environment. This variable is not defined in the UNIX build environment
make file helper, and so the existing build string generation behaviour
is retained in these build environments.
NOTE: This commit completes a cumulative series aimed at improving
build portability across development environments.
This enables the build to run on several new build environments,
if the relevant tools are available.
At this point the build is tested on Windows 7 Enterprise SP1,
using CMD.EXE, Cygwin and Msys (MinGW),as well as a native
Linux envionment". The Windows platform builds used
aarch64-none-elf-gcc.exe 4.9.1. CMD.EXE and Msys used Gnu
Make 3.81, cygwin used Gnu Make 4.1.
CAVEAT: The cert_create tool build is not tested on the Windows
platforms (openssl-for-windows has a GPL license).
Change-Id: Iaa4fc89dbe2a9ebae87e2600c9eef10a6af30251
diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk
index f82ba53..5171ff0 100644
--- a/make_helpers/build_macros.mk
+++ b/make_helpers/build_macros.mk
@@ -346,9 +346,13 @@
$(ELF): $(OBJS) $(LINKERFILE) | bl$(1)_dirs
@echo " LD $$@"
+ifdef MAKE_BUILD_STRINGS
+ $(call MAKE_BUILD_STRINGS, $(BUILD_DIR)/build_message.o)
+else
@echo 'const char build_message[] = "Built : "$(BUILD_MESSAGE_TIMESTAMP); \
const char version_string[] = "${VERSION_STRING}";' | \
$$(CC) $$(CFLAGS) -xc - -o $(BUILD_DIR)/build_message.o
+endif
$$(Q)$$(LD) -o $$@ $$(LDFLAGS) -Map=$(MAPFILE) --script $(LINKERFILE) \
$(BUILD_DIR)/build_message.o $(OBJS)