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# Copyright (C) 2012 The Libphonenumber Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Author: Fredrik Roubert
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# It used to be common to provide pre-compiled Google Test libraries, but this
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# practice is not recommended and is increasingly rare today:
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#
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# http://code.google.com/p/googletest/wiki/FAQ#Why_is_it_not_recommended_to_install_a_pre-compiled_copy_of_Goog
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#
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# This helper function will either find a pre-compiled library or else find the
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# source code and add a library target to build the library from source.
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function (find_or_build_gtest)
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# Find header files.
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find_path (GTEST_INCLUDE_DIR gtest/gtest.h)
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if (${GTEST_INCLUDE_DIR} STREQUAL "GTEST_INCLUDE_DIR-NOTFOUND")
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message (FATAL_ERROR
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"Can't find Google C++ Testing Framework: can't locate gtest/gtest.h. "
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"Please read the README and also take a look at tools/cpp/gtest.cmake.")
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endif ()
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include_directories (${GTEST_INCLUDE_DIR})
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# Check for a pre-compiled library.
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find_library (GTEST_LIB gtest)
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if (${GTEST_LIB} STREQUAL "GTEST_LIB-NOTFOUND")
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# No pre-compiled library found, attempt building it from source.
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find_path (GTEST_SOURCE_DIR src/gtest-all.cc
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HINTS /usr/src/gtest /usr/local/src/gtest)
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add_library (gtest STATIC ${GTEST_SOURCE_DIR}/src/gtest-all.cc)
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include_directories (${GTEST_SOURCE_DIR})
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set (GTEST_LIB gtest PARENT_SCOPE)
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endif ()
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endfunction ()
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