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# Find ANTLR
# ANTLR_FOUND - system has ANTLR lib
# ANTLR_BINARY - the ANTLR binary
# ANTLR_INCLUDE_DIR - the ANTLR include directory
# ANTLR_LIBRARIES - Libraries needed to use ANTLR
# Check default location of ANTLR built with contrib/get-antlr-3.4.
# If the user provides a directory we will not search the default paths and
# fail if ANTLR was not found in the specified directory.
if(NOT ANTLR_HOME)
set(ANTLR_HOME ${PROJECT_SOURCE_DIR}/antlr-3.4)
set(CHECK_SYSTEM_VERSION TRUE)
endif()
find_program(ANTLR_BINARY
NAMES antlr3
PATHS ${ANTLR_HOME}/bin
NO_DEFAULT_PATH)
find_path(ANTLR_INCLUDE_DIR
NAMES antlr3.h
PATHS ${ANTLR_HOME}/include
NO_DEFAULT_PATH)
find_library(ANTLR_LIBRARIES
NAMES antlr3c antlr3c-static
PATHS ${ANTLR_HOME}/lib
NO_DEFAULT_PATH)
if(CHECK_SYSTEM_VERSION)
find_program(ANTLR_BINARY NAMES antlr3)
find_path(ANTLR_INCLUDE_DIR NAMES antlr3.h)
find_library(ANTLR_LIBRARIES NAMES antlr3c)
endif()
# Check if antlr3FileStreamNew is available. If not we have to
# define CVC4_ANTLR3_OLD_INPUT_STREAM (src/parser/CMakeLists.txt).
if(ANTLR_INCLUDE_DIR)
include(CheckSymbolExists)
set(CMAKE_REQUIRED_INCLUDES ${ANTLR_INCLUDE_DIR})
set(CMAKE_REQUIRED_LIBRARIES ${ANTLR_LIBRARIES})
check_symbol_exists(
antlr3FileStreamNew "antlr3defs.h" HAVE_ANTLR3_FILE_STREAM_NEW)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
ANTLR DEFAULT_MSG ANTLR_BINARY ANTLR_INCLUDE_DIR ANTLR_LIBRARIES)
mark_as_advanced(ANTLR_BINARY ANTLR_INCLUDE_DIR ANTLR_LIBRARIES
HAVE_ANTLR3_FILE_STREAM_NEW)
if(ANTLR_LIBRARIES)
message(STATUS "Found ANTLR libs: ${ANTLR_LIBRARIES}")
endif()
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