cmake: ensure that the vcpkg packages are found on Windows

dscho · gitster · commit e18ae4e7a6cd · 2020-09-28T15:11:39.000-07:00
On Windows, we use the `vcpkg` project to manage the dependencies, via
`compat/vcbuild/`. Let's make sure that these dependencies are found by
default.

This is needed because we are about to recommend loading the Git
worktree as a folder into Visual Studio, relying on the automatic CMake
support (which would make it relatively cumbersome to adjust the search
path used by CMake manually).

Signed-off-by: Johannes Schindelin &lt;johannes.schindelin@gmx.de&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
@@ -40,6 +40,13 @@ cmake_minimum_required(VERSION 3.14)
 
 #set the source directory to root of git
 set(CMAKE_SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/../..)
+if(WIN32)
+	set(VCPKG_DIR "${CMAKE_SOURCE_DIR}/compat/vcbuild/vcpkg")
+	list(APPEND CMAKE_PREFIX_PATH "${VCPKG_DIR}/installed/x64-windows")
+
+	# In the vcpkg edition, we need this to be able to link to libcurl
+	set(CURL_NO_CURL_CMAKE ON)
+endif()
 
 find_program(SH_EXE sh PATHS "C:/Program Files/Git/bin")
 if(NOT SH_EXE)
