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GN: extract optional() as a template and use for giflib-dependent code

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BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2270833003

Review-Url: https://codereview.chromium.org/2270833003
This commit is contained in:
mtklein 2016-08-23 13:56:37 -07:00 committed by Commit bot
parent 09e61f7233
commit 457b42a639
1 changed files with 54 additions and 21 deletions
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75
BUILD.gn
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@ -4,6 +4,7 @@
# found in the LICENSE file.
declare_args() {
skia_use_giflib = !is_fuchsia
skia_use_libwebp = !is_fuchsia
}
@ -62,7 +63,6 @@ config("skia_private") {
defines = [
"SK_GAMMA_APPLY_TO_A8",
"SK_HAS_GIF_LIBRARY",
"SK_HAS_JPEG_LIBRARY",
"SK_HAS_PNG_LIBRARY",
@ -179,35 +179,69 @@ if (is_x86) {
}
}
if (skia_use_libwebp) {
config("webp_config") {
defines = [ "SK_HAS_WEBP_LIBRARY" ]
}
source_set("webp") {
configs += skia_library_configs
all_dependent_configs = [ ":webp_config" ]
deps = [
"//third_party/libwebp",
]
sources = [
"src/codec/SkWebpAdapterCodec.cpp",
"src/codec/SkWebpCodec.cpp",
"src/images/SkWEBPImageEncoder.cpp",
]
}
} else {
source_set("webp") {
template("optional") {
if (invoker.enabled) {
config(target_name + "_public") {
defines = invoker.public_defines
}
source_set(target_name) {
forward_variables_from(invoker, "*", [ "public_defines" ])
all_dependent_configs = [ ":" + target_name + "_public" ]
}
} else {
# If not enabled, a phony empty target that swallows all otherwise unused variables.
source_set(target_name) {
forward_variables_from(invoker,
"*",
[
"public_defines",
"configs",
"deps",
"sources",
])
}
}
}
set_defaults("optional") {
configs = default_configs
}
optional("gif") {
enabled = skia_use_giflib
public_defines = [ "SK_HAS_GIF_LIBRARY" ]
configs += skia_library_configs
deps = [
"//third_party/giflib",
]
sources = [
"src/codec/SkGifCodec.cpp",
]
}
optional("webp") {
enabled = skia_use_libwebp
public_defines = [ "SK_HAS_WEBP_LIBRARY" ]
configs += skia_library_configs
deps = [
"//third_party/libwebp",
]
sources = [
"src/codec/SkWebpAdapterCodec.cpp",
"src/codec/SkWebpCodec.cpp",
"src/images/SkWEBPImageEncoder.cpp",
]
}
component("skia") {
public_configs = [ ":skia_public" ]
configs += skia_library_configs
deps = [
":gif",
":webp",
"//third_party/expat",
"//third_party/giflib",
"//third_party/libjpeg-turbo:libjpeg",
"//third_party/libpng",
"//third_party/sfntly",
@ -245,7 +279,6 @@ component("skia") {
"src/codec/SkBmpStandardCodec.cpp",
"src/codec/SkCodec.cpp",
"src/codec/SkCodecImageGenerator.cpp",
"src/codec/SkGifCodec.cpp",
"src/codec/SkIcoCodec.cpp",
"src/codec/SkJpegCodec.cpp",
"src/codec/SkJpegDecoderMgr.cpp",