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######################################################################
# This will test to see if the system has a regex.h file. If so, then
# that header will be included and the library will not build its own
# regex support. If the regex.h is located, then it is assumed that the
# Standard C Library has built-in support for Regex and it will not be
# necessary for SWORD to use its own system internally.
#
# Variables:
# REGEX_INCLUDE_DIR - the directory containing the regex.h file
# REGEX_FOUND - Set to true if the system's regex.h exists
# We call this twice because on Mac, at least for me, it finds a regex.h
# inside of /System/Library/Frameworks/Ruby.framework/Headers, which is
# the paramount of useless. By calling it the first time with some basic
# Unix/Linux compatible forced paths, if it finds it there, then we won't
# have to search again, the value will be cached. However, if the first
# call to FIND_PATH fails, then the search will be run again below.
FIND_PATH(REGEX_INCLUDE_DIR regex.h
PATHS /usr/include /usr/local/include
NO_DEFAULT_PATH
ONLY_CMAKE_FIND_ROOT_PATH
)
# Second call
IF(NOT REGEX_INCLUDE_DIR)
FIND_PATH(REGEX_INCLUDE_DIR regex.h
ONLY_CMAKE_FIND_ROOT_PATH # Hopefully that will assist in iPhone stuffs
)
ENDIF(NOT REGEX_INCLUDE_DIR)
FIND_LIBRARY(REGEX_LIBRARY
NAMES regex gnurx)
IF(REGEX_INCLUDE_DIR)
SET(REGEX_FOUND 1)
MESSAGE(STATUS "System regex.h: Yes")
ELSE(REGEX_INCLUDE_DIR)
MESSAGE(STATUS "System regex.h: No")
ENDIF(REGEX_INCLUDE_DIR)
MARK_AS_ADVANCED(
REGEX_INCLUDE_DIR
)
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