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| author | Brad King <brad.king@kitware.com> | 2020-04-13 09:20:36 -0400 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2020-04-14 23:07:18 +0200 |
| commit | 89f1e639f6a8d1f4dfb309b95f49028f6c826d47 (patch) | |
| tree | ce6ebd190d299810df19ecab1db8894c6de2c945 /CMake | |
| parent | 42e18528f63ad9be46e179cca73bc2b0d2da9eeb (diff) | |
cmake: Avoid MSVC C4273 warnings in send/recv checks
We use `check_c_source_compiles` to check possible send/recv signatures
by reproducing the forward declarations from system headers. On Windows
the `winsock2.h` header adds dll linkage settings to its forward
declaration. If ours does not match the compiler warns:
warning C4273: 'recv': inconsistent dll linkage
Add `WINSOCK_API_LINKAGE` to our test signatures when it is defined so
that our linkage is consistent with that from `winsock2.h`.
Fixes #4764
Closes #5232
Diffstat (limited to 'CMake')
| -rw-r--r-- | CMake/OtherTests.cmake | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/CMake/OtherTests.cmake b/CMake/OtherTests.cmake index f3b92d566..7cec6da6d 100644 --- a/CMake/OtherTests.cmake +++ b/CMake/OtherTests.cmake @@ -63,6 +63,9 @@ if(curl_cv_recv) unset(curl_cv_func_recv_test CACHE) check_c_source_compiles(" ${_source_epilogue} + #ifdef WINSOCK_API_LINKAGE + WINSOCK_API_LINKAGE + #endif extern ${recv_retv} ${signature_call_conv} recv(${recv_arg1}, ${recv_arg2}, ${recv_arg3}, ${recv_arg4}); int main(void) { @@ -127,6 +130,9 @@ if(curl_cv_send) unset(curl_cv_func_send_test CACHE) check_c_source_compiles(" ${_source_epilogue} + #ifdef WINSOCK_API_LINKAGE + WINSOCK_API_LINKAGE + #endif extern ${send_retv} ${signature_call_conv} send(${send_arg1}, ${send_arg2}, ${send_arg3}, ${send_arg4}); int main(void) { |