From 61890382eb65193c98a4f0312548ecceb82dad3b Mon Sep 17 00:00:00 2001
From: b-r-o-c-k <brockmammen@gmail.com>
Date: Sun, 10 Jun 2018 09:57:12 -0500
Subject: [PATCH] deps: Build bundled dependencies automatically for IDEs

Environment variables are used to detect when the project is being built
from within Clion or Visual Studio, so that the build process can be
simplified by automatically building the bundled dependencies for them.
---
 CMakeLists.txt | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2100c53ad2..70d663a89c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,7 +20,34 @@ if(DEFINED ENV{DEPS_BUILD_DIR})
   set(DEPS_PREFIX "$ENV{DEPS_BUILD_DIR}/usr" CACHE PATH "Path prefix for finding dependencies")
 else()
   set(DEPS_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/.deps/usr" CACHE PATH "Path prefix for finding dependencies")
+  # When running from within CLion or Visual Studio,
+  # build bundled dependencies automatically.
+  if(NOT EXISTS ${DEPS_PREFIX}
+     AND (DEFINED ENV{CLION_IDE}
+          OR DEFINED ENV{VisualStudioEdition}))
+    message(STATUS "Building dependencies...")
+    set(DEPS_BUILD_DIR ${PROJECT_BINARY_DIR}/.deps)
+    file(MAKE_DIRECTORY ${DEPS_BUILD_DIR})
+    execute_process(
+      COMMAND ${CMAKE_COMMAND} -G ${CMAKE_GENERATOR}
+        -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}
+        -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+        -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
+        -DCMAKE_C_FLAGS_DEBUG=${CMAKE_C_FLAGS_DEBUG}
+        -DCMAKE_C_FLAGS_MINSIZEREL=${CMAKE_C_FLAGS_MINSIZEREL}
+        -DCMAKE_C_FLAGS_RELWITHDEBINFO=${CMAKE_C_FLAGS_RELWITHDEBINFO}
+        -DCMAKE_C_FLAGS_RELEASE=${CMAKE_C_FLAGS_RELEASE}
+        -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
+        ${PROJECT_SOURCE_DIR}/third-party
+      WORKING_DIRECTORY ${DEPS_BUILD_DIR})
+    execute_process(
+      COMMAND ${CMAKE_COMMAND} --build ${DEPS_BUILD_DIR}
+        --config ${CMAKE_BUILD_TYPE})
+    set(DEPS_PREFIX ${DEPS_BUILD_DIR}/usr)
+  endif()
 endif()
+
 if(CMAKE_CROSSCOMPILING AND NOT UNIX)
   list(INSERT CMAKE_FIND_ROOT_PATH 0 ${DEPS_PREFIX})
   list(INSERT CMAKE_PREFIX_PATH 0 ${DEPS_PREFIX}/../host/bin)