Add example 'Boost-custom-args'

[skip ci]

examples/Boost-custom-args/CMakeLists.txt

@@ -0,0 +1,17 @@
+# Copyright (c) 2013-2017, Ruslan Baratov
+# All rights reserved.
+
+cmake_minimum_required(VERSION 3.0)
+set(TESTING_CONFIG_OPT FILEPATH ${CMAKE_CURRENT_LIST_DIR}/config.cmake)
+
+# Emulate HunterGate:
+# * https://github.com/hunter-packages/gate
+include("../common.cmake")
+
+project(download-boost)
+
+hunter_add_package(Boost)
+find_package(Boost CONFIG REQUIRED)
+
+add_executable(foo foo.cpp)
+target_link_libraries(foo PUBLIC Boost::boost)

examples/Boost-custom-args/config.cmake

@@ -0,0 +1,7 @@
+hunter_config(
+    Boost
+    VERSION ${HUNTER_Boost_VERSION}
+    CMAKE_ARGS
+    CONFIG_MACRO=BOOST_REGEX_MATCH_EXTRA;BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
+    CONFIG_MACRO_BOOST_MPL_LIMIT_LIST_SIZE=3
+)

examples/Boost-custom-args/foo.cpp

@@ -0,0 +1,21 @@
+#include <boost/config.hpp>
+#include <boost/predef.h>
+
+#if !defined(BOOST_REGEX_MATCH_EXTRA)
+# error "BOOST_REGEX_MATCH_EXTRA not defined"
+#endif
+
+#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS)
+# error "BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS not defined"
+#endif
+
+#if !defined(BOOST_MPL_LIMIT_LIST_SIZE)
+# error "BOOST_MPL_LIMIT_LIST_SIZE not defined"
+#endif
+
+#if (BOOST_MPL_LIMIT_LIST_SIZE) != 3
+# error "BOOST_MPL_LIMIT_LIST_SIZE is not 3"
+#endif
+
+int main() {
+}