Re: [dpdk-dev] [PATCH v6 3/7] devtools: fix the Exec format error

[Bruce Richardson <bruce.richardson@intel.com>]

On Thu, Jun 14, 2018 at 05:51:23PM +0800, Gavin Hu wrote:
> meson will natively compile and generate the sanitycheck.exe file.  It will
> be spawned and run at the host side.  Export the cross compiler is not
> necessary as it is already done by the cross-file, and even worse it
> generate the files in the wrong target format.
> 
> The fix to the following compiling error is select the native compiler for
> the sanity test source file.
> 
> Traceback (most recent call last): File
> "/usr/share/meson/mesonbuild/mesonmain.py", line 361, in run app.generate()
> File "/usr/share/meson/mesonbuild/mesonmain.py", line 150, in generate
> self._generate(env) File "/usr/share/meson/mesonbuild/mesonmain.py", line
> 189, in _generate intr = interpreter.Interpreter(b, g) File
> "/usr/share/meson/mesonbuild/interpreter.py", line 1444, in __init__
> self.parse_project() File "/usr/share/meson/mesonbuild/interpreterbase.py",
> line 159, in parse_project self.evaluate_codeblock(self.ast, end=1) File
> "/usr/share/meson/mesonbuild/interpreterbase.py", line 195, in
> evaluate_codeblock raise e File
> "/usr/share/meson/mesonbuild/interpreterbase.py", line 189, in
> evaluate_codeblock self.evaluate_statement(cur) File
> "/usr/share/meson/mesonbuild/interpreterbase.py", line 200, in
> evaluate_statement return self.function_call(cur) File
> "/usr/share/meson/mesonbuild/interpreterbase.py", line 456, in
> function_call return self.funcs[func_name](node, self.flatten(posargs),
> kwargs) File "/usr/share/meson/mesonbuild/interpreterbase.py", line 55, in
> wrapped return f(self, node, args, kwargs) File
> "/usr/share/meson/mesonbuild/interpreterbase.py", line 79, in wrapped
> return f(s, node_or_state, args, kwargs) File
> "/usr/share/meson/mesonbuild/interpreter.py", line 1947, in func_project
> self.add_languages(proj_langs, True) File
> "/usr/share/meson/mesonbuild/interpreter.py", line 2078, in add_languages
> (comp, cross_comp) = self.detect_compilers(lang, need_cross_compiler) File
> "/usr/share/meson/mesonbuild/interpreter.py", line 2047, in
> detect_compilers comp.sanity_check(self.environment.get_scratch_dir(),
> self.environment) File "/usr/share/meson/mesonbuild/compilers/c.py", line
> 254, in sanity_check return self.sanity_check_impl(work_dir, environment,
> 'sanitycheckc.c', code) File "/usr/share/meson/mesonbuild/compilers/c.py",
> line 247, in sanity_check_impl pe = subprocess.Popen(cmdlist) File
> "/usr/lib/python3.5/subprocess.py", line 676, in __init__ restore_signals,
> start_new_session) File "/usr/lib/python3.5/subprocess.py", line 1282, in
> _execute_child raise child_exception_type(errno_num, err_msg) OSError:
> [Errno 8] Exec format error
> 
> Build started at 2018-06-01T12:48:46.852286 Main binary: /usr/bin/python3
> Python system: Linux The Meson build system Version: 0.45.1 Build type:
> cross build Project name: DPDK Sanity testing C compiler:
> aarch64-linux-gnu-gcc Is cross compiler: False.  Sanity check compiler
> command line: aarch64-linux-gnu-gcc
> dpdk/build-arm64-armv8/meson-private/sanitycheckc.c -o
> dpdk/build-arm64-armv8/meson-private/sanitycheckc.exe
> 
> Fixes: a55277a788 ("devtools: add test script for meson builds")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Gavin Hu <gavin.hu@arm.com>
> Reviewed-by: Phil Yang <phil.yang@arm.com>
> Reviewed-by: Song Zhu <song.zhu@arm.com>
> ---
>  devtools/test-meson-builds.sh | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
>
I think this patch is fixing the same error as this one[1], just in a slightly
longer way. [Though the addition of the message about missing the
cross-compiler is nice].

http://dpdk.org/dev/patchwork/patch/40817/