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)

The ExternalProject_Add() looks like:

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=${CMAKE_INSTALL_PREFIX}
  -DCMAKE_PREFIX_PATH=${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
)


—
Gonzalo Garramuno
ggarra13@gmail.com




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