diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/users/triplets.md | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/docs/users/triplets.md b/docs/users/triplets.md index 4f23c8e27..87fa72fd3 100644 --- a/docs/users/triplets.md +++ b/docs/users/triplets.md @@ -53,25 +53,33 @@ This option also has forms for configuration-specific and C flags: ## Windows Variables -### VCPKG_PLATFORM_TOOLSET -Specifies the VS-based C/C++ compiler toolchain to use. - -This can be set to `v141`, `v140`, or left blank. If left blank, we select the latest compiler toolset available on your machine. - -Visual Studio 2015 platform toolset is `v140` -Visual Studio 2017 platform toolset is `v141` - <a name="VCPKG_VISUAL_STUDIO_PATH"></a> ### VCPKG_VISUAL_STUDIO_PATH Specifies the Visual Studio installation to use. -When unspecified, a Visual Studio instance is selected automatically, preferring Stable 2017, then Preview 2017, then 2015. +To select the precise combination of Visual Studio instance and toolset version, we walk through the following algorithm: +1. Determine the setting for `VCPKG_VISUAL_STUDIO_PATH` from the triplet, or the environment variable `VCPKG_VISUAL_STUDIO_PATH`, or consider it unset +2. Determine the setting for `VCPKG_PLATFORM_TOOLSET` from the triplet or consider it unset +3. Gather a list of all pairs of Visual Studio Instances with all toolsets available in those instances + 1. This is ordered first by instance type (Stable, Prerelease, Legacy) and then by toolset version (v142, v141, v140) +4. Filter the list based on the settings for `VCPKG_VISUAL_STUDIO_PATH` and `VCPKG_PLATFORM_TOOLSET`. +5. Select the best remaining option The path should be absolute, formatted with backslashes, and have no trailing slash: ```cmake set(VCPKG_VISUAL_STUDIO_PATH "C:\\Program Files (x86)\\Microsoft Visual Studio\\Preview\\Community") ``` +### VCPKG_PLATFORM_TOOLSET +Specifies the VS-based C/C++ compiler toolchain to use. + +See [`VCPKG_VISUAL_STUDIO_PATH`](#VCPKG_VISUAL_STUDIO_PATH) for the full selection algorithm. + +Valid settings: +* The Visual Studio 2019 platform toolset is `v142`. +* The Visual Studio 2017 platform toolset is `v141`. +* The Visual Studio 2015 platform toolset is `v140`. + ## MacOS Variables ### VCPKG_INSTALL_NAME_DIR |