Can not find IPOPT

[fuhang1987]

CMakeLists.txt:24: error: By not providing "FindIPOPT.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "IPOPT", but CMake did not find one. Could not find a package configuration file provided by "IPOPT" with any of the following names: IPOPTConfig.cmake ipopt-config.cmake Add the installation prefix of "IPOPT" to CMAKE_PREFIX_PATH or set "IPOPT_DIR" to a directory containing one of the above files. If "IPOPT" provides a separate development package or SDK, be sure it has been installed.

[zerolover]

replace

path_optimizer/CMakeLists.txt

Line 20 in 5490467

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")

with
LIST(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)