When building in a portage chroot, we do not have the environment needed to build pylibfdt. It is instead build as a separate package.
Provide a build option to tell U-Boot to skip this part of the build. We still need it to use binman, etc. but don't need it to build its dependencies.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Mike Frysinger vapier@chromium.org ---
Makefile | 8 ++++++++ doc/build/tools.rst | 9 +++++++++ scripts/dtc/Makefile | 2 ++ 3 files changed, 19 insertions(+)
diff --git a/Makefile b/Makefile index 9b90204bfe6..25be94ef20f 100644 --- a/Makefile +++ b/Makefile @@ -646,12 +646,20 @@ export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app export EFI_TARGET # binutils target if EFI is natively supported
export LTO_ENABLE +export PYTHON_ENABLE
# This is y if LTO is enabled for this build. See NO_LTO=1 to disable LTO ifeq ($(NO_LTO),) LTO_ENABLE=$(if $(CONFIG_LTO),y) endif
+# This is y if U-Boot should not build any Python tools or libraries. Typically +# you would need to set this if those tools/libraries (typically binman and +# pylibfdt) cannot be built by your environment and are provided separately. +ifeq ($(NO_PYTHON),) +PYTHON_ENABLE=y +endif + # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use # that (or fail if absent). Otherwise, search for a linker script in a # standard location. diff --git a/doc/build/tools.rst b/doc/build/tools.rst index ec017229258..418f0abb236 100644 --- a/doc/build/tools.rst +++ b/doc/build/tools.rst @@ -45,3 +45,12 @@ Launch the MSYS2 shell of the MSYS2 environment, and do the following::
$ make tools-only_defconfig $ make tools-only + + +Building without Python +----------------------- + +The tools-only build bytes pylibfdt by default. To disable this, use the +NO_PYTHON variable:: + + NO_PYTHON=1 make tools-only_defconfig tools-only diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile index 58d879dd11f..faa72d95e28 100644 --- a/scripts/dtc/Makefile +++ b/scripts/dtc/Makefile @@ -19,4 +19,6 @@ HOSTCFLAGS_dtc-parser.tab.o := -I$(src) $(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
# Added for U-Boot +ifeq ($(PYTHON_ENABLE),y) subdir-$(CONFIG_PYLIBFDT) += pylibfdt +endif