How to set proper architecture for C tests

[AdamSLevy]

Summary

I am attempting to run the runtime-c-api tests but I'm running into this compilation issue. I'm on an up to date Arch Linux system. I've run rustup default nightly.

$ cargo test -- --nocapture
...
[ 23%] Built target test-module-imports
Scanning dependencies of target test-import-function
[ 26%] Building C object CMakeFiles/test-import-function.dir/test-import-function.c.o

stderr:
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c: In function ‘print_str’:
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:23:47: error: implicit declaration of function ‘wasmer_trampoline_get_context’ [-Werror=implicit-function-declaration]
   23 |     struct print_str_context *local_context = wasmer_trampoline_get_context();
      |                                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:23:47: error: initialization of ‘struct print_str_context *’ from ‘int’ makes pointer from integer without a cast [-Werror=int-conversion]
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c: In function ‘main’:
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:51:5: error: unknown type name ‘wasmer_trampoline_buffer_builder_t’
   51 |     wasmer_trampoline_buffer_builder_t *tbb = wasmer_trampoline_buffer_builder_new();
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:51:47: error: implicit declaration of function ‘wasmer_trampoline_buffer_builder_new’ [-Werror=implicit-function-declaration]
   51 |     wasmer_trampoline_buffer_builder_t *tbb = wasmer_trampoline_buffer_builder_new();
      |                                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:51:47: error: initialization of ‘int *’ from ‘int’ makes pointer from integer without a cast [-Werror=int-conversion]
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:52:35: error: implicit declaration of function ‘wasmer_trampoline_buffer_builder_add_context_trampoline’ [-Werror=implicit-function-declaration]
   52 |     unsigned long print_str_idx = wasmer_trampoline_buffer_builder_add_context_trampoline(
      |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:54:10: error: ‘wasmer_trampoline_callable_t’ undeclared (first use in this function)
   54 |         (wasmer_trampoline_callable_t *) print_str,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:54:10: note: each undeclared identifier is reported only once for each function it appears in
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:54:40: error: expected expression before ‘)’ token
   54 |         (wasmer_trampoline_callable_t *) print_str,
      |                                        ^
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:57:5: error: unknown type name ‘wasmer_trampoline_buffer_t’
   57 |     wasmer_trampoline_buffer_t *tb = wasmer_trampoline_buffer_builder_build(tbb);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:57:38: error: implicit declaration of function ‘wasmer_trampoline_buffer_builder_build’ [-Werror=implicit-function-declaration]
   57 |     wasmer_trampoline_buffer_t *tb = wasmer_trampoline_buffer_builder_build(tbb);
      |                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:57:38: error: initialization of ‘int *’ from ‘int’ makes pointer from integer without a cast [-Werror=int-conversion]
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:58:40: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
   58 |     const wasmer_trampoline_callable_t *print_str_callable = wasmer_trampoline_buffer_get_trampoline(tb, print_str_idx);
      |                                        ^
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:58:41: error: ‘print_str_callable’ undeclared (first use in this function); did you mean ‘print_str_called’?
   58 |     const wasmer_trampoline_callable_t *print_str_callable = wasmer_trampoline_buffer_get_trampoline(tb, print_str_idx);
      |                                         ^~~~~~~~~~~~~~~~~~
      |                                         print_str_called
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:58:62: error: implicit declaration of function ‘wasmer_trampoline_buffer_get_trampoline’ [-Werror=implicit-function-declaration]
   58 |     const wasmer_trampoline_callable_t *print_str_callable = wasmer_trampoline_buffer_get_trampoline(tb, print_str_idx);
      |                                                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/aslevy/repos/wasmer/lib/runtime-c-api/tests/test-import-function.c:121:5: error: implicit declaration of function ‘wasmer_trampoline_buffer_destroy’ [-Werror=implicit-function-declaration]
  121 |     wasmer_trampoline_buffer_destroy(tb);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [CMakeFiles/test-import-function.dir/build.make:63: CMakeFiles/test-import-function.dir/test-import-function.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:220: CMakeFiles/test-import-function.dir/all] Error 2
make: *** [Makefile:95: all] Error 2

thread 'test_c_api' panicked at 'Command failed with exit status: ExitStatus(ExitStatus(512))', lib/runtime-c-api/tests/runtime_c_api_tests.rs:41:17
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.


failures:
    test_c_api

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out

error: test failed, to rerun pass '--test runtime_c_api_tests'

It appears that a number of things aren't defined due to some macro guards that depend on __x86_64__ being defined prior to including the wasmer.h file. I'm on an x86_64 machine, why is this not working for me? Is this something I need to specify myself somehow?

[AdamSLevy]

Actually, upon further testing it appears that the issue is that neither __clang__ nor __gcc__ is defined.

[Hywan]

Duplicate of wasmerio/wasmer-php#93.