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# Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
# This file is meant to be included into a target to provide an action
# to generate C header files. These headers include definitions
# that can be used in ARM assembly files.
#
# To use this, create a gyp target with the following form:
# {
# 'target_name': 'my_asm_headers_lib',
# 'type': 'static_library',
# 'sources': [
# 'foo.c',
# 'bar.c',
# ],
# 'includes': ['path/to/this/gypi/file'],
# }
#
# The headers are guaranteed to be generated before any
# source files, even within this target, are compiled.
#
# The 'asm_header_dir' variable specifies the path suffix that output
# files are generated under.
# TODO(kma): port this block from Android into other build systems.
{
'variables': {
'out_dir': '<(SHARED_INTERMEDIATE_DIR)/<(asm_header_dir)',
'process_outputs_as_sources': 1,
'conditions': [
# We only support Android and iOS.
['OS=="android"', {
'compiler_to_use':
'<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <(android_toolchain)/*-gcc)',
'compiler_options': '-I<(webrtc_root)/.. -I<@(android_ndk_include) -S',
'pattern_to_detect': 'offset_',
}],
['OS=="ios"', {
'compiler_to_use': 'clang',
'compiler_options':
'-arch armv7 -I<(webrtc_root)/.. -isysroot $(SDKROOT) -S',
'pattern_to_detect': '_offset_',
}],
]
},
'rules': [
{
'rule_name': 'generate_asm_header',
'extension': 'c',
'inputs': [
'generate_asm_header.py',
],
'outputs': [
'<(out_dir)/<(RULE_INPUT_ROOT).h',
],
'action': [
'python',
'<(webrtc_root)/build/generate_asm_header.py',
'--compiler=<(compiler_to_use)',
'--options=<(compiler_options)',
'--pattern=<(pattern_to_detect)',
'--dir=<(out_dir)',
'<(RULE_INPUT_PATH)',
],
'message': 'Generating assembly header files',
'process_outputs_as_sources': 1,
},
],
'direct_dependent_settings': {
'include_dirs': ['<(out_dir)',],
},
# This target exports a hard dependency because it generates header files.
'hard_dependency': 1,
}
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