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[vcpkg] add environment variable VCPKG_OVERLAY_PORTS (#12640)

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* [vcpkg] add environment variable VCPKG_OVERLAY_PORTS

* add documentation for VCPKG_OVERLAY_PORTS

* append env overlay instead of prepending to give explicitly listed overlays priority

* fix formating (manually)

* manually fixing formating

* improve help text

Co-authored-by: ras0219 <533828+ras0219@users.noreply.github.com>

Co-authored-by: ras0219 <533828+ras0219@users.noreply.github.com>
This commit is contained in:
Alexander Neumann 2020-08-05 20:21:42 +02:00 committed by GitHub
parent c72091e7f6
commit 4fb846bd44
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3 changed files with 24 additions and 1 deletions
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10
docs/users/config-environment.md
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@ -38,11 +38,19 @@ Example: `D:\2017`
This environment variable can be set to a triplet name which will be used for unqualified triplet references in command lines.
#### VCPKG_OVERLAY_PORTS
This environment variable allows users to override ports with alternate versions according to the
[ports overlay](../specifications/ports-overlay.md) specification. List paths to overlays using
the platform dependent PATH seperator (Windows `;` | others `:`)
Example (Windows): `C:\custom-ports\boost;C:\custom-ports\sqlite3`
#### VCPKG_FORCE_SYSTEM_BINARIES
This environment variable, if set, suppresses the downloading of CMake and Ninja and forces the use of the system binaries.
### VCPKG_KEEP_ENV_VARS
#### VCPKG_KEEP_ENV_VARS
This environment variable can be set to a list of environment variables, separated by `;`, which will be propagated to
the build environment.

1
toolsrc/include/vcpkg/vcpkgcmdarguments.h
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@ -130,6 +130,7 @@ namespace vcpkg
constexpr static StringLiteral TRIPLET_ENV = "VCPKG_DEFAULT_TRIPLET";
constexpr static StringLiteral TRIPLET_ARG = "triplet";
std::unique_ptr<std::string> triplet;
constexpr static StringLiteral OVERLAY_PORTS_ENV = "VCPKG_OVERLAY_PORTS";
constexpr static StringLiteral OVERLAY_PORTS_ARG = "overlay-ports";
std::vector<std::string> overlay_ports;
constexpr static StringLiteral OVERLAY_TRIPLETS_ARG = "overlay-triplets";

14
toolsrc/src/vcpkg/vcpkgcmdarguments.cpp
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@ -612,6 +612,7 @@ namespace vcpkg
table.format(opt(TRIPLET_ARG, " ", "<t>"), "Specify the target architecture triplet. See 'vcpkg help triplet'");
table.format("", "(default: " + format_environment_variable("VCPKG_DEFAULT_TRIPLET") + ')');
table.format(opt(OVERLAY_PORTS_ARG, "=", "<path>"), "Specify directories to be used when searching for ports");
table.format("", "(also: " + format_environment_variable("VCPKG_OVERLAY_PORTS") + ')');
table.format(opt(OVERLAY_TRIPLETS_ARG, "=", "<path>"), "Specify directories containing triplets files");
table.format(opt(BINARY_SOURCES_ARG, "=", "<path>"),
"Add sources for binary caching. See 'vcpkg help binarycaching'");
@ -646,6 +647,19 @@ namespace vcpkg
}
}
{
const auto vcpkg_overlay_ports_env = System::get_environment_variable(OVERLAY_PORTS_ENV);
if (const auto unpacked = vcpkg_overlay_ports_env.get())
{
#ifdef WIN32
auto overlays = Strings::split(*unpacked, ';');
#else
auto overlays = Strings::split(*unpacked, ':');
#endif
overlay_ports.insert(std::end(overlay_ports), std::begin(overlays), std::end(overlays));
}
}
if (!vcpkg_root_dir)
{
const auto vcpkg_root_env = System::get_environment_variable(VCPKG_ROOT_DIR_ENV);