Fail build for QNX 6.5.0SP1

[dimm84]

Description

Build the tests for QNX 6.5.0SP1 fails

Steps to reproduce

• use catch version 1.7+

Version 1.6.1 works fine.

Extra information

Build the tests for QNX 6.5.0SP1 fails with message:

.../internal/catch_fatal_condition.hpp:139: error: 'SIGSTKSZ' was not declared in this scope
.../internal/catch_fatal_condition.hpp: In constructor 'Catch::FatalConditionHandler::FatalConditionHandler()':
.../internal/catch_fatal_condition.hpp:158: error: 'altStackMem' was not declared in this scope
.../internal/catch_fatal_condition.hpp:159: error: 'SIGSTKSZ' was not declared in this scope
.../internal/catch_fatal_condition.hpp:161: error: 'sigaltstack' was not declared in this scope
.../internal/catch_fatal_condition.hpp:165: error: 'SA_ONSTACK' was not declared in this scope
.../internal/catch_fatal_condition.hpp: In static member function 'static void Catch::FatalConditionHandler::reset()':
.../internal/catch_fatal_condition.hpp:182: error: 'sigaltstack' was not declared in this scope
.../internal/catch_fatal_condition.hpp: At global scope:
.../internal/catch_fatal_condition.hpp:191: error: 'SIGSTKSZ' was not declared in this scope

catch_fatal_condition.hpp:139 Assumes that the constant SIGSTKSZ is defined in the file signal.h, but SIGSTKSZ not declared there. Same error we see with sigaltstack and SA_ONSTACK.

• Catch version: v1.7.0-1.9.1
• Operating System: QNX 6.5.0SP1
• Compiler+version: GCC-5.1

[horenmar]

The error is caused by the fact that your specific C lib does not conform to current POSIX specification.

Short term fix, define CATCH_CONFIG_NO_POSIX_SIGNALS in at least the implementation file (the one where you define CATCH_CONFIG_MAIN or CATCH_CONFIG_RUNNER). Long term, I will end up disabling it for QNX by default as well.