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# Checks whether the gtest library is available on the system
# Allows for adjusting the include and library path.
# Sets have_gtest=yes if the library is present and
# reports the compiler and linker flags in
# GTEST_CXXFLAGS AND GTEST_LDFLAGS, respectively.
AC_DEFUN([AC_CHECK_GTEST],
[
AC_ARG_WITH([gtest-include-path],
[AS_HELP_STRING([--with-gtest-include-path],
[location of the Google test headers, defaults to /usr/include])],
[GTEST_CXXFLAGS="-I$withval"],
[GTEST_CXXFLAGS='-I/usr/include'])
AC_ARG_WITH([gtest-lib-path],
[AS_HELP_STRING([--with-gtest-lib-path], [location of the Google test libraries])],
[GTEST_LDFLAGS="-L$withval -lpthread"],
[GTEST_LDFLAGS='-lgtest -lpthread'])
AC_LANG_PUSH(C++)
AC_CHECK_LIB([gtest], [main], [:], [:], [-lpthread])
AC_LANG_POP
]) # AC_CHECK_GTEST
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