diff options
Diffstat (limited to 'make_helpers/build_macros.mk')
| -rw-r--r-- | make_helpers/build_macros.mk | 61 |
1 files changed, 46 insertions, 15 deletions
diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk index b22eaf90..5171ff00 100644 --- a/make_helpers/build_macros.mk +++ b/make_helpers/build_macros.mk @@ -1,5 +1,5 @@ # -# Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. +# Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: @@ -28,6 +28,23 @@ # POSSIBILITY OF SUCH DAMAGE. # +# Report an error if the eval make function is not available. +$(eval eval_available := T) +ifneq (${eval_available},T) + $(error This makefile only works with a Make program that supports $$(eval)) +endif + +# Some utility macros for manipulating awkward (whitespace) characters. +blank := +space :=${blank} ${blank} + +# A user defined function to recursively search for a filename below a directory +# $1 is the directory root of the recursive search (blank for current directory). +# $2 is the file name to search for. +define rwildcard +$(strip $(foreach d,$(wildcard ${1}*),$(call rwildcard,${d}/,${2}) $(filter $(subst *,%,%${2}),${d}))) +endef + # This table is used in converting lower case to upper case. uppercase_table:=a,A b,B c,C d,D e,E f,F g,G h,H i,I j,J k,K l,L m,M n,N o,O p,P q,Q r,R s,S t,T u,U v,V w,W x,X y,Y z,Z @@ -193,10 +210,8 @@ $(OBJ): $(2) @echo " CC $$<" $$(Q)$$(CC) $$(CFLAGS) -D$(IMAGE) -c $$< -o $$@ - -$(PREREQUISITES): $(2) +$(PREREQUISITES): $(2) | bl$(3)_dirs @echo " DEPS $$@" - @mkdir -p $(1) $$(Q)$$(CC) $$(CFLAGS) -M -MT $(OBJ) -MF $$@ $$< ifdef IS_ANYTHING_TO_BUILD @@ -220,9 +235,8 @@ $(OBJ): $(2) @echo " AS $$<" $$(Q)$$(AS) $$(ASFLAGS) -D$(IMAGE) -c $$< -o $$@ -$(PREREQUISITES): $(2) +$(PREREQUISITES): $(2) | bl$(3)_dirs @echo " DEPS $$@" - @mkdir -p $(1) $$(Q)$$(AS) $$(ASFLAGS) -M -MT $(OBJ) -MF $$@ $$< ifdef IS_ANYTHING_TO_BUILD @@ -243,9 +257,8 @@ $(1): $(2) @echo " PP $$<" $$(Q)$$(AS) $$(ASFLAGS) -P -E -D__LINKER__ -o $$@ $$< -$(PREREQUISITES): $(2) +$(PREREQUISITES): $(2) | $(dir ${1}) @echo " DEPS $$@" - @mkdir -p $$(dir $$@) $$(Q)$$(AS) $$(ASFLAGS) -M -MT $(1) -MF $$@ $$< ifdef IS_ANYTHING_TO_BUILD @@ -274,7 +287,7 @@ endef # NOTE: The line continuation '\' is required in the next define otherwise we # end up with a line-feed characer at the end of the last c filename. -# Also bare this issue in mind if extending the list of supported filetypes. +# Also bear this issue in mind if extending the list of supported filetypes. define SOURCES_TO_OBJS $(notdir $(patsubst %.c,%.o,$(filter %.c,$(1)))) \ $(notdir $(patsubst %.S,%.o,$(filter %.S,$(1)))) @@ -310,18 +323,36 @@ define MAKE_BL $(eval DUMP := $(call IMG_DUMP,$(1))) $(eval BIN := $(call IMG_BIN,$(1))) $(eval BL_LINKERFILE := $(BL$(call uppercase,$(1))_LINKERFILE)) + # We use sort only to get a list of unique object directory names. + # ordering is not relevant but sort removes duplicates. + $(eval TEMP_OBJ_DIRS := $(sort $(BUILD_DIR)/ $(dir ${OBJS}))) + # The $(dir ) function leaves a trailing / on the directory names + # We append a . then strip /. from each, to remove the trailing / characters + # This gives names suitable for use as make rule targets. + $(eval OBJ_DIRS := $(subst /.,,$(addsuffix .,$(TEMP_OBJ_DIRS)))) + +# Create generators for object directory structure + +$(eval $(foreach objd,${OBJ_DIRS},$(call MAKE_PREREQ_DIR,${objd},))) - $(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) - $(eval $(call MAKE_LD,$(LINKERFILE),$(BL_LINKERFILE))) +.PHONY : bl${1}_dirs -$(BUILD_DIR): - $$(Q)mkdir -p "$$@" +# We use order-only prerequisites to ensure that directories are created, +# but do not cause re-builds every time a file is written. +bl${1}_dirs: | ${OBJ_DIRS} -$(ELF): $(OBJS) $(LINKERFILE) +$(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) +$(eval $(call MAKE_LD,$(LINKERFILE),$(BL_LINKERFILE))) + +$(ELF): $(OBJS) $(LINKERFILE) | bl$(1)_dirs @echo " LD $$@" +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) @@ -337,7 +368,7 @@ $(BIN): $(ELF) @echo .PHONY: bl$(1) -bl$(1): $(BUILD_DIR) $(BIN) $(DUMP) +bl$(1): $(BIN) $(DUMP) all: bl$(1) |