file(READ "${CMAKE_CURRENT_SOURCE_DIR}/parallel_hashmap/phmap_config.h" _PHMAP_H_CONTENTS)
string(REGEX REPLACE ".*#define PHMAP_VERSION_MAJOR ([0-9]+).*" "\\1" DETECTED_PHMAP_VERSION_MAJOR "${_PHMAP_H_CONTENTS}")
string(REGEX REPLACE ".*#define PHMAP_VERSION_MINOR ([0-9]+).*" "\\1" DETECTED_PHMAP_VERSION_MINOR "${_PHMAP_H_CONTENTS}")
string(REGEX REPLACE ".*#define PHMAP_VERSION_PATCH ([0-9]+).*" "\\1" DETECTED_PHMAP_VERSION_PATCH "${_PHMAP_H_CONTENTS}")
set(DETECTED_PHMAP_VERSION "${DETECTED_PHMAP_VERSION_MAJOR}.${DETECTED_PHMAP_VERSION_MINOR}.${DETECTED_PHMAP_VERSION_PATCH}")

message(STATUS "Detected PHMAP Version - ${DETECTED_PHMAP_VERSION}")