From: Viktor Szakats <commit@vsz.me>
Date: Thu, 26 Oct 2023 08:28:20 +0000 (+0000)
Subject: cmake: speed up threads setup for Windows
X-Git-Tag: curl-8_5_0~192
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=191e695fe4bbb77a188e1942b0b9de6e93063cc0;p=thirdparty%2Fcurl.git

cmake: speed up threads setup for Windows

Win32 threads are always available. We enabled them unconditionally
(with `ENABLE_THREADED_RESOLVER`). CMake built-in thread detection
logic has this condition hard-coded for Windows as well (since at least
2007).

Instead of doing all the work of detecting pthread combinations on
Windows, then discarding those results, skip these efforts and assume
built-in thread support when building for Windows.

This saves 1-3 slow CMake configuration steps.

Reviewed-by: Daniel Stenberg
Closes #12202
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6f2cf36ffd..22832a5bcc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -369,14 +369,14 @@ if(WIN32)
 endif()
 
 if(ENABLE_THREADED_RESOLVER)
-  find_package(Threads REQUIRED)
   if(WIN32)
     set(USE_THREADS_WIN32 ON)
   else()
+    find_package(Threads REQUIRED)
     set(USE_THREADS_POSIX ${CMAKE_USE_PTHREADS_INIT})
     set(HAVE_PTHREAD_H ${CMAKE_USE_PTHREADS_INIT})
+    set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
   endif()
-  set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
 endif()
 
 # Check for all needed libraries