feature_test.hpp: error: expected constructor, destructor, or type conversion before ‘(’ token

[jinz2014]

building from the source produces the following errors:

include/sycl/feature_test.hpp:19:28: error: expected constructor, destructor, or type conversion before ‘(’ token
19 | __SYCL_INLINE_VER_NAMESPACE(_V1) {

[AlexeySachkov]

Hi @jinz2014, the macro was completely removed from the codebase in #10510. If I'm not mistaken, feature_test.hpp is a file which is auto-generated from sources and put into build directory - if it was not re-generated by some reason then you will see an error like this.

I would suggest the following steps:

• if you updated your local copy of source code, make sure that there were no conflicts and that update was clean
• do a clean build, i.e. remove build directory

[jinz2014]

Thank you.