Merge branch 'for-next/kbuild'

8 files changed, 66 insertions, 20 deletions

diff --git a/scripts/Makefile b/scripts/Makefile
index f3b9aece9e..75e68822d1 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -35,30 +35,21 @@ HOSTCFLAGS_omap4_usbboot.o = `pkg-config --cflags libusb-1.0`
 HOSTLDLIBS_omap4_usbboot = -lpthread `pkg-config --libs libusb-1.0`
 hostprogs-$(CONFIG_OMAP4_HOSTTOOL_USBBOOT) += omap4_usbboot
 
+userprogs-$(CONFIG_BAREBOXENV_TARGET)		+= bareboxenv-target
+userprogs-$(CONFIG_KERNEL_INSTALL_TARGET)	+= kernel-install-target
+userprogs-$(CONFIG_BAREBOXCRC32_TARGET)		+= bareboxcrc32-target
+userprogs-$(CONFIG_IMD_TARGET)			+= bareboximd-target
+
+userccflags += -I $(srctree)/$(src)/include
+
+userprogs	:= $(userprogs-y)
+always-y	:= $(hostprogs-y) $(hostprogs-m) $(userprogs-y)
+
 subdir-y			+= mod
 subdir-y			+= imx
 subdir-$(CONFIG_X86)		+= setupmbr
 subdir-$(CONFIG_DTC)		+= dtc
 subdir-$(CONFIG_ARCH_TEGRA)	+= tegra
 
-targetprogs-$(CONFIG_BAREBOXENV_TARGET) += bareboxenv-target
-targetprogs-$(CONFIG_KERNEL_INSTALL_TARGET) += kernel-install-target
-targetprogs-$(CONFIG_BAREBOXCRC32_TARGET) += bareboxcrc32-target
-targetprogs-$(CONFIG_IMD_TARGET) += bareboximd-target
-
 # Let clean descend into subdirs
 subdir-	+= basic kconfig setupmbr
-
-quiet_cmd_csingle	= CC      $@
-      cmd_csingle	= $(CC) -Wp,-MD,$(depfile) $(TARGETCFLAGS) $(KBUILD_CFLAGS) -o $@ $<
-
-__targetprogs	:= $(sort $(targetprogs-y) $(targetprogs-m))
-target-csingle	:= $(foreach m,$(__targetprogs),$(if $($(m)-objs),,$(m)))
-__targetprogs	:= $(addprefix $(obj)/,$(__targetprogs))
-target-csingle	:= $(addprefix $(obj)/,$(target-csingle))
-TARGETCFLAGS += -I$(srctree)/scripts/include/
-
-always		:= $(hostprogs-y) $(hostprogs-m) $(targetprogs-y)
-
-$(target-csingle): %-target: %.c FORCE
-	$(call if_changed_dep,csingle)
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 00f627791a..a3dfe261af 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -49,6 +49,12 @@ ifneq ($(hostprogs)$(hostprogs-y)$(hostprogs-m),)
 include scripts/Makefile.host
 endif
 
+# Do not include userprogs rules unless needed.
+userprogs := $(sort $(userprogs))
+ifneq ($(userprogs),)
+include scripts/Makefile.userprogs
+endif
+
 ifndef obj
 $(warning kbuild: Makefile.build is included improperly)
 endif
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index 6e6c9ef7c6..97fd2ef48c 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -37,7 +37,7 @@ subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
 
 __clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
 		   $(always) $(always-y) $(always-m) $(always-) $(targets) $(clean-files)   \
-		   $(hostprogs) $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
+		   $(hostprogs) $(hostprogs-y) $(hostprogs-m) $(hostprogs-) $(userprogs)
 
 # as clean-files is given relative to the current directory, this adds
 # a $(obj) prefix, except for absolute paths
diff --git a/scripts/Makefile.userprogs b/scripts/Makefile.userprogs
new file mode 100644
index 0000000000..fb41529733
--- /dev/null
+++ b/scripts/Makefile.userprogs
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Build userspace programs for the target system
+#
+
+# Executables compiled from a single .c file
+user-csingle	:= $(foreach m, $(userprogs), $(if $($(m)-objs),,$(m)))
+
+# Executables linked based on several .o files
+user-cmulti	:= $(foreach m, $(userprogs), $(if $($(m)-objs),$(m)))
+
+# Objects compiled from .c files
+user-cobjs	:= $(sort $(foreach m, $(userprogs), $($(m)-objs)))
+
+user-csingle	:= $(addprefix $(obj)/, $(user-csingle))
+user-cmulti	:= $(addprefix $(obj)/, $(user-cmulti))
+user-cobjs	:= $(addprefix $(obj)/, $(user-cobjs))
+
+user_ccflags	= -Wp,-MMD,$(depfile) $(KBUILD_USERCFLAGS) $(userccflags) \
+			$($(target-stem)-userccflags)
+user_ldflags	= $(KBUILD_USERLDFLAGS) $(userldflags) $($(target-stem)-userldflags)
+
+# Create an executable from a single .c file
+quiet_cmd_user_cc_c = CC [U]  $@
+      cmd_user_cc_c = $(CC) $(user_ccflags) $(user_ldflags) -o $@ $< \
+		      $($(target-stem)-userldlibs)
+$(user-csingle): $(obj)/%: $(src)/%.c FORCE
+	$(call if_changed_dep,user_cc_c)
+
+# Link an executable based on list of .o files
+quiet_cmd_user_ld = LD [U]  $@
+      cmd_user_ld = $(CC) $(user_ldflags) -o $@ \
+		    $(addprefix $(obj)/, $($(target-stem)-objs)) \
+		    $($(target-stem)-userldlibs)
+$(user-cmulti): FORCE
+	$(call if_changed,user_ld)
+$(call multi_depend, $(user-cmulti), , -objs)
+
+# Create .o file from a .c file
+quiet_cmd_user_cc_o_c = CC [U]  $@
+      cmd_user_cc_o_c = $(CC) $(user_ccflags) -c -o $@ $<
+$(user-cobjs): $(obj)/%.o: $(src)/%.c FORCE
+	$(call if_changed_dep,user_cc_o_c)
+
+targets += $(user-csingle) $(user-cmulti) $(user-cobjs)
diff --git a/scripts/bareboxcrc32-target.c b/scripts/bareboxcrc32-target.c
new file mode 100644
index 0000000000..6c09c9f763
--- /dev/null
+++ b/scripts/bareboxcrc32-target.c
@@ -0,0 +1 @@
+#include "bareboxcrc32.c"
diff --git a/scripts/bareboxenv-target.c b/scripts/bareboxenv-target.c
new file mode 100644
index 0000000000..caf1759205
--- /dev/null
+++ b/scripts/bareboxenv-target.c
@@ -0,0 +1 @@
+#include "bareboxenv.c"
diff --git a/scripts/bareboximd-target.c b/scripts/bareboximd-target.c
new file mode 100644
index 0000000000..903adee53d
--- /dev/null
+++ b/scripts/bareboximd-target.c
@@ -0,0 +1 @@
+#include "bareboximd.c"
diff --git a/scripts/kernel-install-target.c b/scripts/kernel-install-target.c
new file mode 100644
index 0000000000..845a96d29b
--- /dev/null
+++ b/scripts/kernel-install-target.c
@@ -0,0 +1 @@
+#include "kernel-install.c"