[QUESTION] Why is GNUInstallDirs not used in CMakeLists.txt?

[asobhy-qnx]

Regarding the line below:

pybind11/CMakeLists.txt

Lines 181 to 184 in 59323a9

	# GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".
	set(PYBIND11_CMAKECONFIG_INSTALL_DIR
	"share/cmake/${PROJECT_NAME}"
	CACHE STRING "install path for pybind11Config.cmake")

Why can't it be:

set(PYBIND11_CMAKECONFIG_INSTALL_DIR "${CMAKE_INSTALL_DATAROOTDIR}/cmake/${PROJECT_NAME}" CACHE STRING "install path for pybind11Config.cmake")

[henryiii]

It was left there due to the comment: # GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".

Though I have no idea what that comment is referring to, as that's exactly what CMAKE_INSTALL_DATAROOTDIR and CMAKE_INSTALL_DATADIR is defined to... https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html

[asobhy-qnx]

Thank you