#
# All Makefiles must follow the following conventions:
#
# - Compilation and linking steps must be done via the 'cmd' function:
#   e.g., use '$(call cmd,ld_so_o)' to create a shared library using LD
#
# - File-specific build flags must be specified via variables of the format 'FLAG-filename':
#   e.g., use 'LDFLAGS-libsysdb.so=...' to specify libsysdb.so-specific linker flags
#

ifeq ("$(origin V)", "command line")
  BUILD_VERBOSE = $(V)
endif
ifndef BUILD_VERBOSE
  BUILD_VERBOSE = 0
endif

ifeq ($(BUILD_VERBOSE),1)
  quiet =
  Q =
else
  quiet = quiet_
  Q = @
endif

export Q quiet BUILD_VERBOSE

squote  := '
escsq = $(subst $(squote),'\$(squote)',$1)

echo-cmd = $(if $($(quiet)cmd_$(1)), echo '  $(call escsq,$($(quiet)cmd_$(1)))';)
cmd = @$(echo-cmd) $(cmd_$(1))


quiet_cmd_generated_offsets_s = [ $@ ]
      cmd_generated_offsets_s = $(CC) $(CFLAGS) $(defs) -S $< -o $@

generated-offsets.s: generated-offsets.c $(filter-out asm-offsets.h,$(headers))
	$(call cmd,generated_offsets_s)
CLEAN_FILES += generated-offsets.s


quiet_cmd_asm_offsets_h = [ $@ ]
      cmd_asm_offsets_h = \
	(set -e; \
	 echo "/* DO NOT MODIFY. THIS FILE WAS AUTO-GENERATED. */"; \
	 echo "\#ifndef _ASM_OFFSETS_H_"; \
	 echo "\#define _ASM_OFFSETS_H_"; \
	 echo ""; \
	 awk '/\.ascii "GENERATED_INTEGER/{print "\#ifndef " $$3 "\n\#define " $$3 " " $$4 "\n\#endif"}' $^; \
	 echo ""; \
	 echo "\#endif") > $@

asm-offsets.h: generated-offsets.s
	$(call cmd,asm_offsets_h)
CLEAN_FILES += asm-offsets.h

quiet_cmd_generated_offsets_py = [ $@ ]
      cmd_generated_offsets_py = \
	(set -e; \
	 echo "\# DO NOT MODIFY. THIS FILE WAS AUTO-GENERATED."; \
	 echo ""; \
	 awk '/\.ascii "GENERATED_INTEGER/{print $$3 " = " $$4}' $^) > $@

generated_offsets.py: generated-offsets.s
	$(call cmd,generated_offsets_py)
CLEAN_FILES += generated_offsets.py generated_offsets.pyc

quiet_cmd_ln_sf = [ $@ ]
      cmd_ln_sf = ln -sf $(abspath $<) $@

cc-option = $(shell set -e; \
	if ($(CC) -Werror $(1) -c -x c /dev/null -o /dev/null) >/dev/null 2>&1; \
	then echo "$(1)"; \
	fi)

# .c
quiet_cmd_cc_o_c = [ $@ ]
      cmd_cc_o_c = $(CC) -MD -MP $(CFLAGS) $(CFLAGS-$@) -c -o $@ $<

quiet_cmd_cpp_i_c = [ $@ ]
      cmd_cpp_i_c = $(CC) -MD -MP -MF $@.d $(CFLAGS) $(CFLAGS-$@) -E -o $@ $<

quiet_cmd_cc_s_c = [ $@ ]
      cmd_cc_s_c = $(CC) -MD -MP -MF $@.d $(CFLAGS) $(CFLAGS-$@) -S -o $@ $<

# .S
quiet_cmd_as_o_S = [ $@ ]
      cmd_as_o_S = $(CC) -MD -MP $(ASFLAGS) $(ASFLAGS-$@) -c -o $@ $<

quiet_cmd_cpp_s_S = [ $@ ]
      cmd_cpp_s_S = $(CC) -MD -MP -MF $@.d $(ASFLAGS) $(ASFLAGS-$@) -E -o $@ $<

# LD
quiet_cmd_ld_so_o = [ $@ ]
      cmd_ld_so_o = $(LD) $(LDFLAGS) $(LDFLAGS-$@) -o $@ $(filter-out pal-symbols %.map %.map.template %.lds,$^) -soname $(notdir $@)

# AR
quiet_cmd_ar_so_o = [ $@ ]
      cmd_ar_so_o = $(AR) $(ARFLAGS)$(ARFLAGS-$@) $@ $^

quiet_cmd_ar_a_o = [ $@ ]
      cmd_ar_a_o = $(AR) $(ARFLAGS)$(ARFLAGS-$@) $@ $^

# LD only
quiet_cmd_ld = [ $@ ]
      cmd_ld = $(LD) $(LDFLAGS) $(LDFLAGS-$@) -o $@ $(filter-out pal-symbols %.map %.map.template %.lds,$^)

# OBJCOPY
quiet_cmd_objcopy = [ $@ ]
      cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS-$@) $< $@

# check_no_reloc
# This depends on the output of readelf command.
quiet_cmd_check_no_reloc = [ check_no_reloc $^ ]
      cmd_check_no_reloc = LC_ALL=C readelf -r $^ | grep -q 'There are no relocations in this file.'

# single .c => executable
quiet_cmd_csingle = [ $@ ]
      cmd_csingle = $(CC) -MD -MP $(CFLAGS) $(CFLAGS-$@) -o $@ $< $(LDLIBS) $(LDLIBS-$@)

# single .cpp => executable
quiet_cmd_cxxsingle = [ $@ ]
      cmd_cxxsingle = $(CXX) -MD -MP $(CXXFLAGS) $(CXXFLAGS-$@) -o $@ $< $(LDLIBS) $(LDLIBS-$@)

# multiple .o => executable
quiet_cmd_cmulti = [ $@ ]
      cmd_cmulti = $(CC) -MD -MP $(CFLAGS) $(CFLAGS-$@) -o $@ $^ $(LDLIBS) $(LDLIBS-$@)

# sgx sign
quiet_cmd_sgx_sign_exec = [ $*.{sig, manifest.sgx} ]
      cmd_sgx_sign_exec = $(SGX_SIGN) -output $*.manifest.sgx -exec $* -manifest $< > .output.sgx_sign.$*

quiet_cmd_sgx_sign = [ $*.{sig, manifest.sgx} ]
      cmd_sgx_sign = $(SGX_SIGN) -output $*.manifest.sgx -manifest $< > .output.sgx_sign.$*

# sgx token
quiet_cmd_sgx_get_token = [ Token: $(basename $*) ]
      cmd_sgx_get_token = $(SGX_GET_TOKEN) -output $@ -sig $^ > .output.sgx_get_token.$(basename $*)

# sgx manifest dependency
quiet_cmd_sgx_sign_depend_exec = [ $@ ]
      cmd_sgx_sign_depend_exec = $(SGX_SIGN) -depend -output $@ -exec $* -manifest $<

# SGX manifest dependency without executable manifest may not have loader.exec. If it is so,
# only preload libraries. Use static pattern rule for this recipe.
quiet_cmd_sgx_sign_depend = [ $@ ]
      cmd_sgx_sign_depend = $(SGX_SIGN) -depend -output $@ -manifest $<

# manifest
quiet_cmd_manifest = [ $@ ]
      cmd_manifest = \
	$(if $(2),sed $(2) $< > $@,cp -f $< $@); \
	(grep -q "\#\\!" $@ && chmod +x $@) || true

# pal map
PAL_SYMBOL_FILE := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))/../Pal/src/pal-symbols
PAL_SYMBOLS = $(shell sed -e 's|$$|;|g' $(PAL_SYMBOL_FILE))

quiet_cmd_pal_map = [ $@ ]
      cmd_pal_map = \
	(echo "/* DO NOT MODIFY. THIS FILE WAS AUTO-GENERATED. */"; \
	 sed -e 's|\$$(PAL_SYMBOLS)|$(PAL_SYMBOLS)|g' $<) > $@

pal.map: pal.map.template $(PAL_SYMBOL_FILE)
	$(call cmd,pal_map)
