Compilation Conflict with Apache Arrow from ENUM macro

[mikebentley15]

Required information

Operating system: Ubuntu 20.04 LTS

Compiler version: GCC 12.2.0

Eclipse iceoryx version: v2.90.0

Observed result or behaviour: There is a compile-time conflict between this library and Apache Arrow. This is due to the macro definition for ENUM in iceoryx_binding_c/include/iceoryx_binding_c/internal/c2cpp_binding.h. In the Apache Arrow library, there is a header that has ENUM as a value in one of their enums (see arrow/cpp/src/parquet/types.h line 78). If c2cpp_binding.h from this library is included before the other, then we either need to include an #undef ENUM before including the next header or else run into a compile-time error.

Expected result or behaviour: I expect if you define macros in a public header that it's a unique enough name that it will not conflict with user code or with other third-party code.

Conditions where it occurred / Performed steps:

#include <iceoryx_binding_c/types.h>
#include <parquet/types.h>

int main() {
    return 0;
}

It is fixed by either reordering includes

#include <parquet/types.h>
#include <iceoryx_binding_c/types.h>

int main() {
    return 0;
}

or by undefining the ENUM macro after the include

#include <iceoryx_binding_c/types.h>
#undef ENUM
#include <parquet/types.h>

int main() {
    return 0;
}

Both of these solutions on the user side are unsatisfactory. It would be really nice if the macros had more specific names such as ICEORYX_ENUM and ICEORYX_CLASS to avoid name clashes.