skia2/third_party/libpng/BUILD.gn
Mike Klein 10d665d000 Allow most third_party targets to use system libraries if asked.
This extends the pattern in freetype2 to expat, icu, libjpeg-turbo, libpng, libwebp, and zlib, and gives all these an arg to control which to use.

Homebrew doesn't have dng_sdk, piex, or sftnly, or I'd have done the same for them too.

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4260

DOCS_PREVIEW= https://skia.org/?cl=4260

Change-Id: I82e780502bf2217336e791787f172a6fc8f55460
Reviewed-on: https://skia-review.googlesource.com/4260
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Hal Canary <halcanary@google.com>
2016-11-01 16:17:38 +00:00

49 lines
880 B
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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.
declare_args() {
skia_use_system_libpng = false
}
import("../third_party.gni")
if (skia_use_system_libpng) {
system("libpng") {
libs = [ "png" ]
}
} else {
third_party("libpng") {
public_include_dirs = [ "." ]
deps = [
"//third_party/zlib",
]
sources = [
"png.c",
"pngerror.c",
"pngget.c",
"pngmem.c",
"pngpread.c",
"pngread.c",
"pngrio.c",
"pngrtran.c",
"pngrutil.c",
"pngset.c",
"pngtrans.c",
"pngwio.c",
"pngwrite.c",
"pngwtran.c",
"pngwutil.c",
]
if (current_cpu == "arm" || current_cpu == "arm64") {
sources += [
"arm/arm_init.c",
"arm/filter_neon_intrinsics.c",
]
}
}
}