skia2/third_party/third_party.gni
Shachar Langbeheim db610b3038 third-party.gni: Search includes using -I.
This will ensure that the headers from the dependencies will have
precedent over system headers, thus preventing situations where system
headers will block dependency headers and prevent compilation.

Change-Id: I0d480a6d3898f2da99cf2706c5335aaac05b4e4d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/220276
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-06-11 19:04:29 +00:00

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# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
template("third_party") {
enabled = !defined(invoker.enabled) || invoker.enabled
config(target_name + "_public") {
if (enabled) {
cflags = []
if (defined(invoker.public_defines)) {
defines = invoker.public_defines
}
if (is_win) {
include_dirs = invoker.public_include_dirs
if (is_clang) {
foreach(dir, invoker.public_include_dirs) {
cflags += [
"/imsvc",
rebase_path(dir),
]
}
}
} else {
foreach(dir, invoker.public_include_dirs) {
if (werror) {
cflags += [
"-isystem",
rebase_path(dir),
]
} else {
cflags += [
"-I",
rebase_path(dir),
]
}
}
}
} else {
not_needed(invoker, "*")
}
}
# You can't make a static_library() without object files to archive,
# but we can treat targets without object files as a source_set().
if (defined(invoker.sources)) {
_mode = "static_library"
} else {
_mode = "source_set"
}
target(_mode, target_name) {
if (enabled) {
forward_variables_from(invoker, "*", [ "public_include_dirs" ])
public_configs = [ ":" + target_name + "_public" ]
# Warnings are just noise if we're not maintaining the code.
if (is_win) {
cflags = [ "/w" ]
} else {
cflags = [ "-w" ]
}
}
}
}
set_defaults("third_party") {
configs = default_configs
if (!is_official_build) {
# Official builds don't have warnings to begin with.
configs -= [ "//gn:warnings" ]
}
# Don't want to to deal with this (especially /RTCc)
if (sanitize == "MSVC") {
configs -= [ "//gn:msvc_rtc" ]
}
if (is_debug) {
configs += [ "//gn:optimize" ]
}
}
template("system") {
config(target_name + "_public") {
forward_variables_from(invoker, "*", [])
}
group(target_name) {
public_configs = [ ":" + target_name + "_public" ]
}
}