binman: Use target-specific tools when cross-compiling

Currently, binman always runs the compile tools like cc, objcopy, strip,
etc. using their literal name. Instead, this patch makes it use the
target-specific versions by default, derived from the tool-specific
environment variables (CC, OBJCOPY, STRIP, etc.) or from the
CROSS_COMPILE environment variable.

For example, the u-boot-elf etype directly uses 'strip'. Trying to run
the tests with 'CROSS_COMPILE=i686-linux-gnu- binman test' on an arm64
host results in the '097_elf_strip.dts' test to fail as the arm64
version of 'strip' can't understand the format of the x86 ELF file.

This also adjusts some command.Output() calls that caused test errors or
failures to use the target versions of the tools they call. After this,
patch, an arm64 host can run all tests with no errors or failures using
a correct CROSS_COMPILE value.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/tools/dtoc/fdt_util.py b/tools/dtoc/fdt_util.py
index b040793772..37e96b9864 100644
--- a/tools/dtoc/fdt_util.py
+++ b/tools/dtoc/fdt_util.py
@@ -68,22 +68,23 @@ def EnsureCompiled(fname, tmpdir=None, capture_stderr=False):
 
     search_paths = [os.path.join(os.getcwd(), 'include')]
     root, _ = os.path.splitext(fname)
-    args = ['-E', '-P', '-x', 'assembler-with-cpp', '-D__ASSEMBLY__']
+    cc, args = tools.GetTargetCompileTool('cc')
+    args += ['-E', '-P', '-x', 'assembler-with-cpp', '-D__ASSEMBLY__']
     args += ['-Ulinux']
     for path in search_paths:
         args.extend(['-I', path])
     args += ['-o', dts_input, fname]
-    command.Run('cc', *args)
+    command.Run(cc, *args)
 
     # If we don't have a directory, put it in the tools tempdir
     search_list = []
     for path in search_paths:
         search_list.extend(['-i', path])
-    args = ['-I', 'dts', '-o', dtb_output, '-O', 'dtb',
+    dtc, args = tools.GetTargetCompileTool('dtc')
+    args += ['-I', 'dts', '-o', dtb_output, '-O', 'dtb',
             '-W', 'no-unit_address_vs_reg']
     args.extend(search_list)
     args.append(dts_input)
-    dtc = os.environ.get('DTC') or 'dtc'
     command.Run(dtc, *args, capture_stderr=capture_stderr)
     return dtb_output