From 6a47beee63f8dc1a00307d5f394f64a34e1d9715 Mon Sep 17 00:00:00 2001
From: Mark Jan van Kampen <mjvk@allseas.com>
Date: Sat, 16 Jan 2021 09:04:17 +0100
Subject: [PATCH] Adds option to force a build of protokit and select a
 specific commit

---
 CMakeLists.txt | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a65c3d9..78eded3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,6 +6,8 @@ project(norm VERSION 1.5.8)
 set(COMMON src/common)
 
 option(NORM_BUILD_EXAMPLES "Enables building of the examples in /examples." OFF)
+option(NORM_FORCE_BUILD_PROTOKIT "Enables forced build of protokit." OFF)
+option(NORM_USE_LATEST_PROTOKIT "Enables the use of the latest protokit version." OFF)
 
 include(CheckCXXSymbolExists)
 check_cxx_symbol_exists(dirfd "dirent.h" HAVE_DIRFD)
@@ -23,15 +25,24 @@ if(HAVE_FLOCK)
 	list(APPEND PLATFORM_DEFINITIONS HAVE_FLOCK)
 endif()
 
+if(NORM_USE_LATEST_PROTOKIT)
+	set(NORM_PROTOKIT_GIT_TAG origin/master)
+else()
+	set(NORM_PROTOKIT_GIT_TAG fbe1c747933cfd8c85e03035eabb6d28c7c758b5)
+endif()
+
 # Check for libraries
-find_package(protokit QUIET)
+if(NOT NORM_FORCE_BUILD_PROTOKIT AND NOT NORM_USE_LATEST_PROTOKIT)
+	find_package(protokit)
+endif()
 
 if(NOT protokit_FOUND)
+	message(STATUS "Building protokit from ${NORM_PROTOKIT_GIT_TAG}")
     include(FetchContent)
     FetchContent_Declare(
       protokit
       GIT_REPOSITORY https://github.com/USNavalResearchLaboratory/protolib.git
-      GIT_TAG        origin/master
+      GIT_TAG        ${NORM_PROTOKIT_GIT_TAG}
     )
     FetchContent_MakeAvailable(protokit)
 endif()