Convert source sets to static libraries.

third_party/BUILD.gn

 # Copyright 2014 PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("../pdfium.gni")
 
 group("third_party") {
   deps = [
     ":bigint",
     ":fx_freetype",
     ":pdfium_base",
   ]
 }
 
 config("pdfium_third_party_config") {
   configs = [ "..:pdfium_common_config" ]
 }
 
-source_set("bigint") {
+static_library("bigint") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":pdfium_third_party_config",
   ]
   sources = [
     "bigint/BigInteger.cc",
     "bigint/BigInteger.hh",
     "bigint/BigIntegerLibrary.hh",
     "bigint/BigIntegerUtils.cc",
@@ skipping 69 matching lines @@
 
 if (!pdf_use_skia) {
   config("fx_agg_warnings") {
     visibility = [ ":*" ]
     if (is_clang) {
       # calc_butt_cap() in agg_vcgen_stroke.cpp is unused.
       cflags = [ "-Wno-unused-function" ]
     }
   }
 
-  source_set("fx_agg") {
+  static_library("fx_agg") {
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [
       "//build/config/compiler:no_chromium_code",
       ":pdfium_third_party_config",
 
       # Must be after no_chromium_code for warning flags to be ordered correctly.
       ":fx_agg_warnings",
     ]
     sources = [
       "agg23/agg_basics.h",
@@ skipping 22 matching lines @@
       # cmslut.cc is sloppy with aggregate initialization. Version 2.7 of this
       # library doesn't appear to have this problem.
       "-Wno-missing-braces",
 
       # FindPrev() in cmsplugin.c is unused.
       "-Wno-unused-function",
     ]
   }
 }
 
-source_set("fx_lcms2") {
+static_library("fx_lcms2") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":pdfium_third_party_config",
 
     # Must be after no_chromium_code for warning flags to be ordered correctly.
     ":fx_lcms2_warnings",
   ]
   sources = [
     "lcms2-2.6/include/lcms2.h",
@@ skipping 27 matching lines @@
 }
 
 # This is only used for standalone builds.
 config("jpeg_warnings") {
   visibility = [ ":*" ]
   if (is_clang) {
     cflags = [ "-Wno-shift-negative-value" ]
   }
 }
 
-source_set("jpeg") {
+static_library("jpeg") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":pdfium_third_party_config",
 
     # Must be after no_chromium_code for warning flags to be ordered correctly.
     ":jpeg_warnings",
   ]
   sources = [
     "libjpeg/cderror.h",
@@ skipping 57 matching lines @@
 config("fx_libopenjpeg_warnings") {
   visibility = [ ":*" ]
   if (is_win) {
     cflags = [
       # Signed/unsigned comparisons.
       "/wd4018",
     ]
   }
 }
 
-source_set("fx_libopenjpeg") {
+static_library("fx_libopenjpeg") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":pdfium_third_party_config",
 
     # Must be after no_chromium_code for warning flags to be ordered correctly.
     ":fx_libopenjpeg_warnings",
   ]
   sources = [
     "libopenjpeg20/bio.c",
@@ skipping 11 matching lines @@
     "libopenjpeg20/opj_clock.c",
     "libopenjpeg20/pi.c",
     "libopenjpeg20/raw.c",
     "libopenjpeg20/t1.c",
     "libopenjpeg20/t2.c",
     "libopenjpeg20/tcd.c",
     "libopenjpeg20/tgt.c",
   ]
 }
 
-source_set("fx_lpng") {
+static_library("fx_lpng") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":pdfium_third_party_config",
   ]
   sources = [
     "libpng16/png.c",
     "libpng16/png.h",
     "libpng16/pngconf.h",
     "libpng16/pngdebug.h",
@@ skipping 13 matching lines @@
     "libpng16/pngstruct.h",
     "libpng16/pngtrans.c",
     "libpng16/pngwio.c",
     "libpng16/pngwrite.c",
     "libpng16/pngwtran.c",
     "libpng16/pngwutil.c",
   ]
 }
 
 if (pdf_enable_xfa) {
-  source_set("fx_tiff") {
+  static_library("fx_tiff") {
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [
       "//build/config/compiler:no_chromium_code",
       ":pdfium_third_party_config",
     ]
     if (is_win) {
       # Need to undefine the macro since it is redefined in
       # tif_ojpeg.c and tif_jpeg.c.
       configs -= [ "//build/config/win:lean_and_mean" ]
     }
@@ skipping 43 matching lines @@
 }
 
 # TODO(dsinclair): Remove if fixed upstream. https://crbug.com/507712
 config("fx_zlib_warnings") {
   visibility = [ ":*" ]
   if (is_clang) {
     cflags = [ "-Wno-shift-negative-value" ]
   }
 }
 
-source_set("fx_zlib") {
+static_library("fx_zlib") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":pdfium_third_party_config",
 
     # Must be after no_chromium_code for warning flags to be ordered correctly.
     ":fx_zlib_warnings",
   ]
   sources = [
     "zlib_v128/adler32.c",
     "zlib_v128/compress.c",
     "zlib_v128/crc32.c",
     "zlib_v128/deflate.c",
     "zlib_v128/gzclose.c",
     "zlib_v128/gzlib.c",
     "zlib_v128/gzread.c",
     "zlib_v128/gzwrite.c",
     "zlib_v128/infback.c",
     "zlib_v128/inffast.c",
     "zlib_v128/inflate.c",
     "zlib_v128/inftrees.c",
     "zlib_v128/trees.c",
     "zlib_v128/uncompr.c",
     "zlib_v128/zutil.c",
   ]
 }
 
+# Can not be a static library due to lack of .cc files.
 source_set("pdfium_base") {
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":pdfium_third_party_config",
   ]
   sources = [
     "base/logging.h",
     "base/macros.h",
     "base/numerics/safe_conversions.h",
     "base/numerics/safe_conversions_impl.h",
     "base/numerics/safe_math.h",
     "base/numerics/safe_math_impl.h",
     "base/stl_util.h",
   ]
 }