From fd12965463aae42eca6d2c0da473e0f0ecff5615 Mon Sep 17 00:00:00 2001
From: Kevin Lu <6320810+kevinlul@users.noreply.github.com>
Date: Wed, 11 Mar 2020 12:16:42 -0400
Subject: [PATCH] [libgit2] Add features pcre,pcre2 to choose regex backend
 (#10333)

* [libgit2] Add features to build against vcpkg pcre,pcre2

* version

* libgit2 will automatically link to 'system' zlib, which is inconsistent depending on if vcpkg zlib was installed or not. This rectifies this by always targeting vcpkg zlib
---
 ports/libgit2/CONTROL        | 12 ++++++++++--
 ports/libgit2/portfile.cmake |  9 +++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/ports/libgit2/CONTROL b/ports/libgit2/CONTROL
index fbf739e77..bbfedcd33 100644
--- a/ports/libgit2/CONTROL
+++ b/ports/libgit2/CONTROL
@@ -1,6 +1,14 @@
 Source: libgit2
-Version: 0.99.0
+Version: 0.99.0-1
 Homepage: https://github.com/libgit2/libgit2
-Build-Depends: openssl (!windows&&!uwp)
+Build-Depends: zlib, openssl (!windows&&!uwp)
 Description: Git linkable library
 Supports: !uwp
+
+Feature: pcre
+Description: Build against external libpcre
+Build-Depends: pcre
+
+Feature: pcre2
+Description: Build against external libpcre2
+Build-Depends: pcre2
diff --git a/ports/libgit2/portfile.cmake b/ports/libgit2/portfile.cmake
index 12566af64..fe5ef45ce 100644
--- a/ports/libgit2/portfile.cmake
+++ b/ports/libgit2/portfile.cmake
@@ -11,11 +11,20 @@ vcpkg_from_github(
 
 string(COMPARE EQUAL "${VCPKG_CRT_LINKAGE}" "static" STATIC_CRT)
 
+if ("pcre" IN_LIST FEATURES)
+    set(REGEX_BACKEND pcre)
+elseif ("pcre2" IN_LIST FEATURES)
+    set(REGEX_BACKEND pcre2)
+else()
+    set(REGEX_BACKEND builtin)
+endif()
+
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     PREFER_NINJA
     OPTIONS
         -DBUILD_CLAR=OFF
+        -DREGEX_BACKEND=${REGEX_BACKEND}
         -DSTATIC_CRT=${STATIC_CRT}
 )