perf tools: Fix build error on read only source.

[sfrench/cifs-2.6.git] / scripts / Makefile.host

diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 060f4c563a5cd0973559b6804a2e1d76ddfadd2a..1ac414fd50300384663248c0ac651c9887bfe45d 100644 (file)
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -3,9 +3,9 @@
 # Binaries are used during the compilation of the kernel, for example
 # to preprocess a data file.
 #
-# Both C and C++ is supported, but preferred language is C for such utilities.
+# Both C and C++ are supported, but preferred language is C for such utilities.
 #
-# Samle syntax (see Documentation/kbuild/makefile.txt for reference)
+# Sample syntax (see Documentation/kbuild/makefiles.txt for reference)
 # hostprogs-y := bin2hex
 # Will compile bin2hex.c and create an executable named bin2hex
 #
@@ -23,20 +23,15 @@
 # hostprogs-y := conf
 # conf-objs  := conf.o libkconfig.so
 # libkconfig-objs := expr.o type.o
-# Will create a shared library named libkconfig.so that consist of
-# expr.o and type.o (they are both compiled as C code and the object file
+# Will create a shared library named libkconfig.so that consists of
+# expr.o and type.o (they are both compiled as C code and the object files
 # are made as position independent code).
-# conf.c is compiled as a c program, and conf.o is linked together with
+# conf.c is compiled as a C program, and conf.o is linked together with
 # libkconfig.so as the executable conf.
 # Note: Shared libraries consisting of C++ files are not supported
 
 __hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
 
-# hostprogs-y := tools/build may have been specified. Retreive directory
-host-objdirs := $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f))))
-host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
-
-
 # C code
 # Executables compiled from a single .c file
 host-csingle   := $(foreach m,$(__hostprogs),$(if $($(m)-objs),,$(m)))
@@ -65,6 +60,21 @@ host-cobjs   := $(filter-out %.so,$(host-cobjs))
 #Object (.o) files used by the shared libaries
 host-cshobjs   := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
 
+# output directory for programs/.o files
+# hostprogs-y := tools/build may have been specified. Retrieve directory
+host-objdirs := $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f))))
+# directory of .o files from prog-objs notation
+host-objdirs += $(foreach f,$(host-cmulti),                  \
+                    $(foreach m,$($(f)-objs),                \
+                        $(if $(dir $(m)),$(dir $(m)))))
+# directory of .o files from prog-cxxobjs notation
+host-objdirs += $(foreach f,$(host-cxxmulti),                  \
+                    $(foreach m,$($(f)-cxxobjs),                \
+                        $(if $(dir $(m)),$(dir $(m)))))
+
+host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
+
+
 __hostprogs     := $(addprefix $(obj)/,$(__hostprogs))
 host-csingle   := $(addprefix $(obj)/,$(host-csingle))
 host-cmulti    := $(addprefix $(obj)/,$(host-cmulti))
@@ -104,7 +114,7 @@ hostcxx_flags  = -Wp,-MD,$(depfile) $(__hostcxx_flags)
 quiet_cmd_host-csingle         = HOSTCC  $@
       cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \
                $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
-$(host-csingle): %: %.c FORCE
+$(host-csingle): $(obj)/%: $(src)/%.c FORCE
        $(call if_changed_dep,host-csingle)
 
 # Link an executable based on list of .o files, all plain c
@@ -113,14 +123,14 @@ quiet_cmd_host-cmulti     = HOSTLD  $@
       cmd_host-cmulti  = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
                          $(addprefix $(obj)/,$($(@F)-objs)) \
                          $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
-$(host-cmulti): %: $(host-cobjs) $(host-cshlib) FORCE
+$(host-cmulti): $(obj)/%: $(host-cobjs) $(host-cshlib) FORCE
        $(call if_changed,host-cmulti)
 
 # Create .o file from a single .c file
 # host-cobjs -> .o
 quiet_cmd_host-cobjs   = HOSTCC  $@
       cmd_host-cobjs   = $(HOSTCC) $(hostc_flags) -c -o $@ $<
-$(host-cobjs): %.o: %.c FORCE
+$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
        $(call if_changed_dep,host-cobjs)
 
 # Link an executable based on list of .o files, a mixture of .c and .cc
@@ -130,20 +140,20 @@ quiet_cmd_host-cxxmulti   = HOSTLD  $@
                          $(foreach o,objs cxxobjs,\
                          $(addprefix $(obj)/,$($(@F)-$(o)))) \
                          $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
-$(host-cxxmulti): %: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE
+$(host-cxxmulti): $(obj)/%: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE
        $(call if_changed,host-cxxmulti)
 
 # Create .o file from a single .cc (C++) file
 quiet_cmd_host-cxxobjs = HOSTCXX $@
       cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
-$(host-cxxobjs): %.o: %.cc FORCE
+$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
        $(call if_changed_dep,host-cxxobjs)
 
 # Compile .c file, create position independent .o file
 # host-cshobjs -> .o
 quiet_cmd_host-cshobjs = HOSTCC  -fPIC $@
       cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
-$(host-cshobjs): %.o: %.c FORCE
+$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
        $(call if_changed_dep,host-cshobjs)
 
 # Link a shared library, based on position independent .o files
@@ -152,7 +162,7 @@ quiet_cmd_host-cshlib       = HOSTLLD -shared $@
       cmd_host-cshlib  = $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
                          $(addprefix $(obj)/,$($(@F:.so=-objs))) \
                          $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
-$(host-cshlib): %: $(host-cshobjs) FORCE
+$(host-cshlib): $(obj)/%: $(host-cshobjs) FORCE
        $(call if_changed,host-cshlib)
 
 targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\