Merge tag 'u-boot-imx-20211020' of https://source.denx.de/u-boot/custodians/u-boot-imx

[platform/kernel/u-boot.git] / Makefile

diff --git a/Makefile b/Makefile
index f911f70..5194e4d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -299,9 +299,7 @@ KBUILD_HOSTLDLIBS   := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
 # have older compilers as their default, so we make it explicit for
 # these that our host tools are GNU11 (i.e. C11 w/ GNU extensions).
 CSTD_FLAG := -std=gnu11
-ifeq ($(HOSTOS),linux)
 KBUILD_HOSTCFLAGS += $(CSTD_FLAG)
-endif
 
 ifeq ($(HOSTOS),cygwin)
 KBUILD_HOSTCFLAGS      += -ansi
@@ -415,7 +413,13 @@ PERL               = perl
 PYTHON         ?= python
 PYTHON2                = python2
 PYTHON3                ?= python3
-DTC            ?= $(objtree)/scripts/dtc/dtc
+
+# The devicetree compiler and pylibfdt are automatically built unless DTC is
+# provided. If DTC is provided, it is assumed the pylibfdt is available too.
+DTC_INTREE     := $(objtree)/scripts/dtc/dtc
+DTC            ?= $(DTC_INTREE)
+DTC_MIN_VERSION        := 010406
+
 CHECK          = sparse
 
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
@@ -1335,9 +1339,6 @@ $(U_BOOT_ITS): $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
 else
 ifneq ($(CONFIG_USE_SPL_FIT_GENERATOR),)
 U_BOOT_ITS := u-boot.its
-ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-imx/mkimage_fit_atf.sh")
-U_BOOT_ITS_DEPS += u-boot-nodtb.bin
-endif
 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py")
 U_BOOT_ITS_DEPS += u-boot
 endif
@@ -1954,9 +1955,29 @@ endif
 
 endif
 
+# Check dtc and pylibfdt, if DTC is provided, else build them
 PHONY += scripts_dtc
 scripts_dtc: scripts_basic
-       $(Q)$(MAKE) $(build)=scripts/dtc
+       $(Q)if test "$(DTC)" = "$(DTC_INTREE)"; then \
+               $(MAKE) $(build)=scripts/dtc; \
+       else \
+               if ! $(DTC) -v >/dev/null; then \
+                       echo '*** Failed to check dtc version: $(DTC)'; \
+                       false; \
+               else \
+                       if test "$(call dtc-version)" -lt $(DTC_MIN_VERSION); then \
+                               echo '*** Your dtc is too old, please upgrade to dtc $(DTC_MIN_VERSION) or newer'; \
+                               false; \
+                       else \
+                               if [ -n "$(CONFIG_PYLIBFDT)" ]; then \
+                                       if ! echo "import libfdt" | $(PYTHON3) 2>/dev/null; then \
+                                               echo '*** pylibfdt does not seem to be available with $(PYTHON3)'; \
+                                               false; \
+                                       fi; \
+                               fi; \
+                       fi; \
+               fi; \
+       fi
 
 # ---------------------------------------------------------------------------
 quiet_cmd_cpp_lds = LDS     $@