cmake: find winsock when building on windows

When building on Windows, with CMake and mingw, curl fails to compile
because the CMake build system is not properly looking for the Winsock
libraries

Patch by: Pau Garcia i Quiles
Bug: http://curl.haxx.se/bug/view.cgi?id=3389231

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3a5bc4a..8ad8b4a 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -148,7 +148,9 @@ option(ENABLE_IPV6 "Define if you want to enable IPv6 support" OFF)
 mark_as_advanced(ENABLE_IPV6)
 
 if(WIN32)
-  list_spaces_append_once(CMAKE_C_STANDARD_LIBRARIES wsock32.lib ws2_32.lib)  # bufferoverflowu.lib
+  find_library(WSOCK32_LIBRARY wsock32)
+  find_library(WS2_32_LIBRARY ws2_32)
+  list_spaces_append_once(CMAKE_C_STANDARD_LIBRARIES ${WSOCK32_LIBRARY} ${WS2_32_LIBRARY})  # bufferoverflowu.lib
   if(CURL_DISABLE_LDAP)
     # Remove wldap32.lib from space-separated list
     string(REPLACE " " ";" _LIST ${CMAKE_C_STANDARD_LIBRARIES})
@@ -861,4 +863,3 @@ install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/curl"
     DESTINATION include
     FILES_MATCHING PATTERN "*.h"
     PATTERN "curlbuild.h" EXCLUDE)
- 
\ No newline at end of file