On 13/8/22 10:01, Albrecht Schlosser wrote:

On 8/13/22 13:23 Gonzalo Garramuno wrote:

When running the compilation of fltk thru ExternalProject_Add() cmake will try to install fluid into the /Applications/ directory and it will fail due to lack of permissions unless run as root user.

-- Up-to-date: /Applications/fluid.app
CMake Error at fluid/cmake_install.cmake:49 (file):

   file INSTALL cannot set permissions on "/Applications/fluid.app": Operation

   not permitted.
Call Stack (most recent call first):
   cmake_install.cmake:105 (include)

OK, I understand the words, but I believe we need more context. What exactly are the steps you do when this happens? Could you please provide a full CMakeLists.txt with a demo (hello world) file that uses this technique and describe the commands you use so we (I) can test?

CMakeLists.txt
---------------------

cmake_minimum_required(VERSION 3.10)

# Use extraction timestamps
if( NOT CMAKE_VERSION LESS 3.24.0 )
  cmake_policy( SET CMP0135 NEW )
endif()

#
# Run this file by calling runme.sh - NOT cmake
#
project( Dependencies )


# use, i.e. don't skip the full RPATH for the build tree
SET(CMAKE_SKIP_BUILD_RPATH FALSE)

# when building, don't use the install RPATH already
# (but later on when installing)
SET(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)

# the RPATH to be used when installing
SET(CMAKE_INSTALL_RPATH "")


set( CMAKE_MAKEFILE_VERBOSE 1 )

# Many Build Libraries here, then we get to:

include( BuildFLTK.cmake )

BuildFLTK.cmake
------------------------


Include( ExternalProject )

ExternalProject_Add(
   FLTK
   GIT_REPOSITORY "https://github.com/fltk/fltk.git";
   GIT_PROGRESS 1
   CMAKE_ARGS
  -DCMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}
  -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
  -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}

# INSTALL_PREFIX.
  -DCMAKE_PREFIX_PATH=${CMAKE_INSTALL_PREFIX}
  -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
  -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
  -DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
  -DFLTK_BUILD_EXAMPLES=OFF
  -DFLTK_BUILD_TEST=OFF
  -DOPTION_BUILD_SHARED_LIBS=0
  -DOPTION_USE_SYSTEM_ZLIB=0
  -DOPTION_USE_SYSTEM_LIBJPEG=0
  -DOPTION_USE_SYSTEM_LIBPNG=0)

I call cmake, with:

cmake .. -DCMAKE_INSTALL_PREFIX=$PWD/install

--
Gonzalo Garramuño
ggarra13@gmail.com

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