Create a standalone pdfium build.

build/standalone.gypi

+# 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.
+
+# Definitions to be used when building stand-alone PDFium binaries.
+
+{
+  'variables': {
+    'component%': 'static_library',
+    'clang%': 0,

[Nico, 2014/05/24 23:14:23]

Nothing reads this.

[jam, 2014/05/27 01:46:21]

will also remove in a followup

[jam, 2014/05/27 04:45:06]

actually looks like it's used in pdfium.gyp

+    'msvs_multi_core_compile%': '1',
+    'variables': {
+      'variables': {
+        'variables': {
+          'conditions': [
+            ['OS=="linux" or OS=="mac"', {
+              # This handles the Unix platforms we generally deal with.
+              # Anything else gets passed through, which probably won't work
+              # very well; such hosts should pass an explicit target_arch
+              # to gyp.
+              'host_arch%':
+                '<!(uname -m | sed -e "s/i.86/ia32/;\
+                                       s/x86_64/x64/;\
+                                       s/amd64/x64/;\
+                                       s/arm.*/arm/;\
+                                       s/aarch64/arm64/;\
+                                       s/mips.*/mipsel/")',
+            }, {
+              # OS!="linux" and OS!="mac"
+              'host_arch%': 'ia32',
+            }],
+          ],
+        },
+        'host_arch%': '<(host_arch)',
+        'target_arch%': '<(host_arch)',
+      },
+      'host_arch%': '<(host_arch)',
+      'target_arch%': '<(target_arch)',
+    },
+    'host_arch%': '<(host_arch)',
+    'target_arch%': '<(target_arch)',

[Nico, 2014/05/24 23:14:23]

It looks like nothing reads host_arch and target_arch at the moment either,
maybe just remove them for now (this allows removing 4 nested variable blocks,
which is kind of nice). Sorry for missing this last time.

(It's possible to build for android with this gyp file as is, independent of the
presence of host_arch and target_arch, by setting CC_host and CC_target and
CFLAGS_target envvars. Chromium knows the location of the ndk compiler binaries,
so it can use make_global_settings to make this easier, but you don't have an
ndk deps'd in, so tweaking env vars is probably the best you can do.)

[jam, 2014/05/27 01:46:21]

these were needed by v8's gyp files. does that make sense?

+    'werror%': '-Werror',
+    'v8_optimized_debug%': 0,
+    'icu_gyp_path': '../v8/third_party/icu/icu.gyp',
+    'conditions': [
+      ['OS == "win"', {
+        'os_posix%': 0,
+      }, {
+        'os_posix%': 1,
+      }],
+    ],
+  },
+  'target_defaults': {
+    'default_configuration': 'Debug',
+    'configurations': {
+      'Debug': {
+        'cflags': [
+          '-g',
+          '-O0',          
+          '-fdata-sections',
+          '-ffunction-sections',
+        ],
+        'msvs_settings': {
+          'VCCLCompilerTool': {
+            'Optimization': '0',
+            'conditions': [
+              ['component=="shared_library"', {
+                'RuntimeLibrary': '3',  # /MDd
+              }, {
+                'RuntimeLibrary': '1',  # /MTd
+              }],
+            ],
+          },
+          'VCLinkerTool': {
+            'LinkIncremental': '2',
+          },
+        },
+        'xcode_settings': {
+          'GCC_OPTIMIZATION_LEVEL': '0',  # -O0
+        },
+      },
+      'Release': {
+        'cflags': [
+          '-fno-strict-aliasing',
+        ],
+        'xcode_settings': {
+          'GCC_OPTIMIZATION_LEVEL': '3',  # -O3
+          'GCC_STRICT_ALIASING': 'NO',
+        },
+        'msvs_settings': {
+          'VCCLCompilerTool': {
+            'Optimization': '2',
+            'InlineFunctionExpansion': '2',
+            'EnableIntrinsicFunctions': 'true',
+            'FavorSizeOrSpeed': '0',
+            'StringPooling': 'true',
+            'conditions': [
+              ['component=="shared_library"', {
+                'RuntimeLibrary': '2',  #/MD
+              }, {
+                'RuntimeLibrary': '0',  #/MT
+              }],
+            ],
+          },
+          'VCLinkerTool': {
+            'LinkIncremental': '1',
+            'OptimizeReferences': '2',
+            'EnableCOMDATFolding': '2',
+          },
+        },
+        'conditions': [
+          ['OS=="linux"', {
+            'cflags': [
+              '-fdata-sections',
+              '-ffunction-sections',
+              '-O3',
+              '-O2',
+            ],
+          }],
+          ['OS=="android"', {
+            'cflags!': [
+              '-O3',
+              '-Os',
+            ],
+            'cflags': [
+              '-fdata-sections',
+              '-ffunction-sections',
+              '-O2',
+            ],
+          }],
+        ],  # conditions
+      },
+    },
+    'defines!': [
+      'DEBUG',
+    ],
+    'cflags!': [

[Nico, 2014/05/24 23:14:23]

You mean 'cflags', not 'cflags!' here, right? (The former sets them, the latter
removes them if present)

[jam, 2014/05/27 01:46:21]

oops, that was by accident. fixing in followup

+      '-Wall',
+      '-W',
+      '-Wno-unused-parameter',
+      '-pthread', '-fno-exceptions',
+      '-fvisibility=hidden',
+    ],
+    'cflags_cc': [
+      '-Wnon-virtual-dtor',
+      '-fno-rtti',
+    ],
+    'ldflags': [
+      '-pthread',
+    ],
+    'msvs_cygwin_dirs': ['<(DEPTH)/v8/third_party/cygwin'],
+    'msvs_configuration_attributes': {
+      'OutputDirectory': '<(DEPTH)\\out\\$(ConfigurationName)',
+      'IntermediateDirectory': '$(OutDir)\\obj\\$(ProjectName)',
+      'CharacterSet': '1',
+    },
+    'msvs_settings': {
+      'VCCLCompilerTool': {
+        'MinimalRebuild': 'false',
+        'BufferSecurityCheck': 'true',
+        'EnableFunctionLevelLinking': 'true',
+        'RuntimeTypeInfo': 'false',
+        'WarningLevel': '3',
+        'WarnAsError': 'false',
+        'DebugInformationFormat': '3',
+        'Detect64BitPortabilityProblems': 'false',
+        'conditions': [
+          [ 'msvs_multi_core_compile', {
+            'AdditionalOptions': ['/MP'],
+          }],
+          ['component=="shared_library"', {
+            'ExceptionHandling': '1',  # /EHsc
+          }, {
+            'ExceptionHandling': '0',
+          }],
+        ],
+      },
+      'VCLibrarianTool': {
+        'AdditionalOptions': ['/ignore:4221'],
+      },
+      'VCLinkerTool': {
+        'GenerateDebugInformation': 'true',
+        'LinkIncremental': '1',
+        # SubSystem values:
+        #   0 == not set
+        #   1 == /SUBSYSTEM:CONSOLE
+        #   2 == /SUBSYSTEM:WINDOWS
+        'SubSystem': '1',
+        'AdditionalDependencies': [
+          'advapi32.lib',
+          'gdi32.lib',
+          'user32.lib',
+        ],
+      },
+    },
+    'xcode_settings': {
+      'ALWAYS_SEARCH_USER_PATHS': 'NO',
+      'GCC_CW_ASM_SYNTAX': 'NO',                # No -fasm-blocks
+      'GCC_DYNAMIC_NO_PIC': 'NO',               # No -mdynamic-no-pic
+                                                # (Equivalent to -fPIC)
+      'GCC_ENABLE_CPP_EXCEPTIONS': 'NO',        # -fno-exceptions
+      'GCC_ENABLE_CPP_RTTI': 'NO',              # -fno-rtti
+      'GCC_ENABLE_PASCAL_STRINGS': 'NO',        # No -mpascal-strings
+      # GCC_INLINES_ARE_PRIVATE_EXTERN maps to -fvisibility-inlines-hidden
+      'GCC_INLINES_ARE_PRIVATE_EXTERN': 'YES',
+      'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',      # -fvisibility=hidden
+      'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO',     # -Werror
+      'GCC_WARN_NON_VIRTUAL_DESTRUCTOR': 'YES', # -Wnon-virtual-dtor
+      'SYMROOT': '<(DEPTH)/xcodebuild',
+      'USE_HEADERMAP': 'NO',
+      'OTHER_CFLAGS': [
+        '-fno-strict-aliasing',
+      ],
+      'WARNING_CFLAGS': [
+        '-Wall',
+        '-Wendif-labels',
+        '-W',
+        '-Wno-unused-parameter',
+      ],
+    },
+  },
+  'conditions': [
+    ['component=="shared_library"', {
+      'cflags': [
+        '-fPIC',
+      ],
+    }],
+    ['OS=="win"', {
+      'target_defaults': {
+        'defines': [
+          '_CRT_SECURE_NO_DEPRECATE',
+          '_CRT_NONSTDC_NO_DEPRECATE',
+        ],
+        'conditions': [
+          ['component=="static_library"', {
+            'defines': [
+              '_HAS_EXCEPTIONS=0',
+            ],
+          }],
+        ],
+      },
+    }],  # OS=="win"
+    ['OS=="mac"', {
+      'target_defaults': {
+        'link_settings': {
+          'libraries': [
+            '$(SDKROOT)/System/Library/Frameworks/AppKit.framework',
+            '$(SDKROOT)/System/Library/Frameworks/CoreFoundation.framework',
+          ],
+        },
+        'target_conditions': [
+          ['_type!="static_library"', {
+            'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
+          }],
+        ],  # target_conditions
+      },  # target_defaults
+    }],  # OS=="mac"
+  ],
+}