Commit 0c3b7e42 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo

tools build: Add support for host programs format

In some cases, like for fixdep and shortly for jevents, we need to build a tool
to run on the host that will be used in building a tool, such as perf, that is
being cross compiled, so do like the kernel and provide HOSTCC, HOSTLD and HOSTAR
to do that.
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Requested-by: default avatarAndi Kleen <andi@firstfloor.org>
Requested-and-Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20160927141846.GA6589@kravaSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 18ef15c6
...@@ -90,3 +90,8 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)), \ ...@@ -90,3 +90,8 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)), \
# - per object C flags # - per object C flags
# - BUILD_STR macro to allow '-D"$(variable)"' constructs # - BUILD_STR macro to allow '-D"$(variable)"' constructs
c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj)) c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
###
## HOSTCC C flags
host_c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CHOSTFLAGS) -D"BUILD_STR(s)=\#s" $(CHOSTFLAGS_$(basetarget).o) $(CHOSTFLAGS_$(obj))
...@@ -14,6 +14,12 @@ endef ...@@ -14,6 +14,12 @@ endef
$(call allow-override,CC,$(CROSS_COMPILE)gcc) $(call allow-override,CC,$(CROSS_COMPILE)gcc)
$(call allow-override,LD,$(CROSS_COMPILE)ld) $(call allow-override,LD,$(CROSS_COMPILE)ld)
HOSTCC ?= gcc
HOSTLD ?= ld
HOSTAR ?= ar
export HOSTCC HOSTLD HOSTAR
ifeq ($(V),1) ifeq ($(V),1)
Q = Q =
else else
......
...@@ -58,6 +58,9 @@ quiet_cmd_mkdir = MKDIR $(dir $@) ...@@ -58,6 +58,9 @@ quiet_cmd_mkdir = MKDIR $(dir $@)
quiet_cmd_cc_o_c = CC $@ quiet_cmd_cc_o_c = CC $@
cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
quiet_cmd_host_cc_o_c = HOSTCC $@
cmd_host_cc_o_c = $(HOSTCC) $(host_c_flags) -c -o $@ $<
quiet_cmd_cpp_i_c = CPP $@ quiet_cmd_cpp_i_c = CPP $@
cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $< cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $<
...@@ -72,14 +75,22 @@ quiet_cmd_ld_multi = LD $@ ...@@ -72,14 +75,22 @@ quiet_cmd_ld_multi = LD $@
cmd_ld_multi = $(if $(strip $(obj-y)),\ cmd_ld_multi = $(if $(strip $(obj-y)),\
$(LD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@) $(LD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@)
quiet_cmd_host_ld_multi = HOSTLD $@
cmd_host_ld_multi = $(if $(strip $(obj-y)),\
$(HOSTLD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(HOSTAR) rcs $@)
ifneq ($(filter $(obj),$(hostprogs)),)
host = host_
endif
# Build rules # Build rules
$(OUTPUT)%.o: %.c FORCE $(OUTPUT)%.o: %.c FORCE
$(call rule_mkdir) $(call rule_mkdir)
$(call if_changed_dep,cc_o_c) $(call if_changed_dep,$(host)cc_o_c)
$(OUTPUT)%.o: %.S FORCE $(OUTPUT)%.o: %.S FORCE
$(call rule_mkdir) $(call rule_mkdir)
$(call if_changed_dep,cc_o_c) $(call if_changed_dep,$(host)cc_o_c)
$(OUTPUT)%.i: %.c FORCE $(OUTPUT)%.i: %.c FORCE
$(call rule_mkdir) $(call rule_mkdir)
...@@ -119,7 +130,7 @@ $(sort $(subdir-obj-y)): $(subdir-y) ; ...@@ -119,7 +130,7 @@ $(sort $(subdir-obj-y)): $(subdir-y) ;
$(in-target): $(obj-y) FORCE $(in-target): $(obj-y) FORCE
$(call rule_mkdir) $(call rule_mkdir)
$(call if_changed,ld_multi) $(call if_changed,$(host)ld_multi)
__build: $(in-target) __build: $(in-target)
@: @:
......
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