PKG: fix install_rule for symlink files

Packaging/CMakeLists.txt

@@ -45,25 +45,20 @@ set(QT_TRANSLATIONS_DIR       "${SUPERBUILD_INSTALL_DIR}/translations")
 get_filename_component(PACKAGE_OTB_SRC_DIR ${OTBPackaging_SOURCE_DIR} PATH)
 set(SUPERBUILD_SOURCE_DIR     "${PACKAGE_OTB_SRC_DIR}/SuperBuild")
 
-if(OTB_WRAP_PYTHON AND NOT PYTHON_EXECUTABLE)
-  find_package(PythonInterp REQUIRED)
-endif()
-
-find_program(FILE_COMMAND "file")
-if(WIN32)
-  set(ZIP_EXE_NAMES 7z 7za)
-  find_program(ZIP_EXECUTABLE NAMES ${ZIP_EXE_NAMES})
-  if(NOT ZIP_EXECUTABLE)
-    message(FATAL_ERROR
-      "Cannot find 7z executable '${ZIP_EXE_NAMES}' in your PATH")
-  endif()
-endif()
 
 set(LINUX FALSE)
 if( "${CMAKE_SYSTEM_NAME}"  MATCHES "Linux")
   set(LINUX TRUE)
 endif()
 
+if(OTB_WRAP_PYTHON AND NOT PYTHON_EXECUTABLE)
+  find_package(PythonInterp REQUIRED)
+endif()
+
+find_program(FILE_COMMAND NAMES  "file")
+find_program(READLINK NAMES "readlink")
+find_program(ZIP_EXECUTABLE NAMES 7z 7za)
+
 #install prefix is same as SUPERBUILD_INSTALL_DIR. could be changed later
 set(CMAKE_INSTALL_PREFIX "${SUPERBUILD_INSTALL_DIR}")
 
@@ -140,6 +135,8 @@ include(install_without_message)
 include(install_rule)
 include(isfile_symlink)
 include(update_symlinks_script)
+include(detect_using_file_command)
+include(install_otbapp_wrapper_scripts)
 
 # below functions include many install commands which are installing
 # files under PKG_STAGE_DIR
@@ -224,6 +221,7 @@ endif()
 create_package()
 
 if(BUILD_TESTING)
+  message("adding testing")
   enable_testing()
   include(testing.cmake)
 endif()

Packaging/Files/linux_pkgsetup.in

@@ -40,10 +40,9 @@ unset LD_LIBRARY_PATH
 
 #RK: We cannot avoid -maxdepth 1 option in find command below because,
 # there are files in $OUT_DIR/lib/gtk which we CANNOT add new rpath
-BINARY_FILES=$(find $OUT_DIR/lib $OUT_DIR/bin $OUT_DIR/lib/otb/applications -maxdepth 1 -type f -exec file {} \; | grep -i elf|cut -f1 -d':')
-PYMODULE_FILE=$(find $OUT_DIR/lib/python -maxdepth 1)
+BINARY_FILES=$(find $OUT_DIR/lib/python $OUT_DIR/lib $OUT_DIR/bin $OUT_DIR/lib/otb/applications -maxdepth 1 -type f -exec file {} \; | grep -i elf|cut -f1 -d':')
 # run patchelf
-for bin_file in $BINARY_FILES $PYMODULE_FILE; do
+for bin_file in $BINARY_FILES; do
     #echo "adding rpath to $bin_file"
     if [ -f "$bin_file" ]; then
         "$PATCH_ELF_EXE" "--set-rpath" "$OUT_DIR/lib" "$bin_file"
@@ -51,10 +50,10 @@ for bin_file in $BINARY_FILES $PYMODULE_FILE; do
 done
 
 #install uninstall_otb script
-echo "Installing uninstall script for OTB 'uninstall_otb.sh'"
-sed -i -E "s,OUT_DIR,$OUT_DIR,g" "$OUT_DIR/install_manifest.txt"
-sed -i -E "s,OUT_DIR,$OUT_DIR,g" "$OUT_DIR/uninstall_otb.sh"
-chmod +x "$OUT_DIR/uninstall_otb.sh"
+echo "Installing uninstall script for OTB 'tools/uninstall_otb.sh'"
+sed -i -E "s,OUT_DIR,$OUT_DIR,g" "$OUT_DIR/tools/install_manifest_otb.txt"
+sed -i -E "s,OUT_DIR,$OUT_DIR,g" "$OUT_DIR/tools/uninstall_otb.sh"
+chmod +x "$OUT_DIR/tools/uninstall_otb.sh"
 
 sed -i -E  "s,OUT_DIR,$OUT_DIR,g" "$OUT_DIR/monteverdi.sh"
 chmod +x "$OUT_DIR/monteverdi.sh"
@@ -79,6 +78,8 @@ printf %s\\n "You can also copy above line to  ~/.profile to keep changes perman
 printf %s\\n "More documentation can be found in $OUT_DIR/README"
 
 
+#rm -f  "$OUT_DIR/make_symlinks"
 rm -f  "$OUT_DIR/patchelf"
 rm -f  "$OUT_DIR/setup_python.sh"
 rm -f  "$OUT_DIR/pkgsetup"
+

Packaging/check_cmake_variables.cmake

@@ -18,8 +18,18 @@
 # limitations under the License.
 #
 macro(check_cmake_variables)
+  set(required_vars)
   if(OTB_WRAP_PYTHON)
-    set(required_vars PYTHON_EXECUTABLE)
+    list(APPEND required_vars PYTHON_EXECUTABLE)
+  endif()
+  
+  if(LINUX)
+    list(APPEND required_vars FILE_COMMAND)
+    list(APPEND required_vars READLINK)
+  endif()
+
+  if(WIN32)
+    list(APPEND required_vars ZIP_EXECUTABLE)
   endif()
   foreach(req
       ${required_vars}
@@ -35,6 +45,8 @@ macro(check_cmake_variables)
       LOADER_PROGRAM
       LOADER_ARGS
       LOADER_REGEX
+      PKG_ITK_SB_VERSION
+      PKG_OTB_VERSION_STRING
       )
     if(NOT DEFINED ${req} OR "${${req}}" STREQUAL "")
       message(FATAL_ERROR "you must set ${req}")

Packaging/detect_using_file_command.cmake

+function(detect_using_file_command input_file result_type result_dir)
+  
+  execute_process(COMMAND "${FILE_COMMAND}" "${input_file}"
+    RESULT_VARIABLE file_rv
+    OUTPUT_VARIABLE file_ov
+    ERROR_VARIABLE file_ev
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+  if(NOT file_rv STREQUAL "0")
+    message(FATAL_ERROR "${FILE_COMMAND} failed: ${file_rv}\n${file_ev}\n${file_ov}")
+  endif()
+
+  get_filename_component(input_file_NAME ${input_file} NAME)
+  string(REPLACE "${input_file}" " _file_full_ " file_ov "${file_ov}")
+  string(TOLOWER "${file_ov}" file_ov_lower)
+
+  set(detected_type)
+  set(detected_dir)
+  # below executable check works for both mac osx and linux
+  if("${file_ov_lower}" MATCHES "executable")
+    set(detected_type PROGRAMS)
+    set(detected_dir bin)
+    # detect position independent executables on Linux,
+    # where "file" gives "dynamically linked (uses shared libraries)"
+  elseif("${file_ov_lower}" MATCHES "dynamically linked.*\(uses shared libs\)")
+    set(detected_type FILES)
+    set(detected_dir lib)
+    # detect position independent executables on Linux,
+    # where "file" gives "shared object ... (uses shared libraries)"
+  elseif("${file_ov_lower}" MATCHES "shared object.*\(uses shared libs\)")
+    set(detected_type FILES)
+    set(detected_dir lib)
+    # detect shared libraries on Linux,
+    # where "file" gives "ELF 64-bit LSB shared object, AMD x86-64, version 1 (SYSV), not stripped"
+  elseif("${file_ov_lower}" MATCHES "elf.*shared object.*version")
+    set(detected_type FILES)
+    set(detected_dir lib)
+    # "file" version 5.22 does not print "(used shared libraries)"
+    # but uses "interpreter"
+  elseif("${file_ov_lower}" MATCHES "shared object.*interpreter")
+    set(detected_type FILES)
+    set(detected_dir lib)
+    # detect shared libraries on Mac OSX
+    # where "file" gives "Mach-O 64-bit x86_64 dynamically linked shared library"
+  elseif("${file_ov_lower}" MATCHES "mach-o.*dynamically linked shared library")
+    set(detected_type FILES)
+    set(detected_dir lib)
+    #below check is redundant.  detect executables on Mac OSX
+    # where "file" gives "Mach-O 64-bit x86_64 executable"
+  elseif("${file_ov_lower}" MATCHES "mach-o.*executable")
+    set(detected_type PROGRAMS)
+    set(detected_dir bin)
+    # detect shared libraries on Mac OSX
+    # where "file" gives "Mach-O 64-bit x86_64 bundle"
+  elseif("${file_ov_lower}" MATCHES "mach-o.*bundle")
+    set(detected_type FILES)
+    set(detected_dir lib)
+  elseif("${file_ov_lower}" MATCHES "mach-o.*bundle")
+    set(detected_type FILES)
+    set(detected_dir lib)
+  elseif("${file_ov_lower}" MATCHES "symbolic link")
+    #this will do a symlink check again using but that's okay!
+
+    #set type to symlink we are going to resolve it anyway
+    set(detected_type "symlink")
+
+    set(is_this_a_symbolic_link FALSE)
+    set(target_file)
+    isfile_symlink("${input_file}" is_this_a_symbolic_link target_file)    
+    if(is_this_a_symbolic_link)
+      
+      if(target_file)
+	set(libdir "lib")
+	setif_value_in_list(is_gtk_lib "${input_file_NAME}" GTK_LIB_LIST_1)
+	if(is_gtk_lib)
+	  set(libdir "lib/gtk")
+	endif()
+	file(APPEND
+	  ${CMAKE_BINARY_DIR}/make_symlinks
+	  "ln -sf \"$OUT_DIR/${libdir}/${target_file}\" \"$OUT_DIR/${libdir}/${input_file_NAME}\" \n"
+	  )
+      endif() #target_file
+    endif() #is_this_a_symbolic_link
+  else() #if("${file_ov_lower}" MATCHES ...)
+    #we are out of options at this point. throw error!
+    message(FATAL_ERROR "unknown/untracked file type found: ${input_file}")
+  endif() #if("${file_ov_lower}" MATCHES ...)
+
+  #message("detected_type=${detected_type}")
+  set(${result_type} "${detected_type}" PARENT_SCOPE)
+  set(${result_dir} "${detected_dir}" PARENT_SCOPE)
+endfunction()

Packaging/install_otbapp_wrapper_scripts.cmake

+function(install_otbapp_wrapper_scripts otbapp_libfile)
+  ########### install cli and gui script for each application ###########
+  set(my_script_ext "")
+  if(WIN32)
+    set(my_script_ext ".bat")
+  endif()
+  get_filename_component(otbapp_libfile_WE ${otbapp_libfile} NAME_WE)
+  #just remove otbapp_ first. we will add otbcli_ or otbgui_ later
+  set(otbapp_name)
+  string(REPLACE "otbapp_" "" otbapp_name ${otbapp_libfile_WE})
+
+  #now define cli_script with valid name otbcli_<APPNAME><EXT>
+  set(cli_script "otbcli_${otbapp_name}${my_script_ext}")
+  if(NOT EXISTS "${SUPERBUILD_INSTALL_DIR}/bin/${cli_script}")
+    #report error!
+    message(FATAL_ERROR "Cannot find ${cli_script} for ${otbapp_libfile}")
+  endif()
+  #install file
+  install(
+    PROGRAMS "${SUPERBUILD_INSTALL_DIR}/bin/${cli_script}"
+    DESTINATION ${PKG_STAGE_DIR}/bin
+    )
+
+  #Do the same for otbgui script but only if HAVE_QT4 is set.
+  if(NOT HAVE_QT4)
+    return()
+  endif()
+  
+  #now define gui_script_actual with valid name otbgui_<APPNAME><EXT>
+  set(gui_script "otbgui_${otbapp_name}${my_script_ext}")
+  if(NOT EXISTS "${SUPERBUILD_INSTALL_DIR}/bin/${gui_script}")
+    #report error
+    message(FATAL_ERROR "Cannot find ${gui_script} for ${otbapp_libfile}")
+  endif()
+  #install script file
+  install(
+  PROGRAMS "${SUPERBUILD_INSTALL_DIR}/bin/${gui_script}"
+  DESTINATION ${PKG_STAGE_DIR}/bin )
+endfunction() 

Packaging/install_rule.cmake

@@ -2,179 +2,71 @@ function(install_rule src_file)
 
   get_filename_component(src_file_EXT ${src_file} EXT)
   get_filename_component(src_file_NAME ${src_file} NAME)
-  
   get_filename_component(src_file_NAME_WE ${src_file} NAME_WE)
-  
   get_filename_component(src_file_PATH ${src_file} PATH)
 
-  if(NOT FILE_COMMAND)
-    message(FATAL_ERROR "warning: No 'file' command, cannot continue...")
-  endif()
-
   file(GLOB src_file_star "${src_file_PATH}/${src_file_NAME_WE}*")
 
   foreach(sfile ${src_file_star})
     #message( "sfile=${sfile}")
     get_filename_component(sfile_NAME ${sfile} NAME)
-    get_filename_component(file_full "${sfile}" ABSOLUTE)
-    string(TOLOWER "${file_full}" file_full_lower)
-
     string(TOLOWER "${sfile_NAME}" sfile_NAME_LOWER)
+    
+    get_filename_component(sfile_ABS "${sfile}" ABSOLUTE) #file_full -> sfile_ABS
+    string(TOLOWER "${sfile_ABS}" sfile_ABS_LOWER) #file_full_lower -> sfile_ABS_LOWER
+    
     if ("${sfile_NAME_LOWER}" MATCHES "^(otb|mvd)([a-z]+)(headertest|testdriver)")
       message( "SKIP INSTALL for ${sfile_NAME_LOWER}")
       continue()
-    endif()
-    
+    endif()    
     set(install_type)
     set(install_dir)
-    
-    if("${file_full_lower}" MATCHES "(\\.exe)$")
+    if("${sfile_ABS_LOWER}" MATCHES "(\\.exe)$")
       set(install_type PROGRAMS)
       set(install_dir bin)
-    elseif("${file_full_lower}" MATCHES "(\\.dll)$")
+    elseif("${sfile_ABS_LOWER}" MATCHES "(\\.dll)$")
       set(install_type FILES)
       set(install_dir bin) 
-    elseif("${file_full_lower}" MATCHES "(\\.lib)$")
+    elseif("${sfile_ABS_LOWER}" MATCHES "(\\.lib)$")
       set(install_type FILES)
       set(install_dir lib)
-    elseif("${file_full_lower}" MATCHES "(\\.a)$")
+    elseif("${sfile_ABS_LOWER}" MATCHES "(\\.a)$")
       set(install_type FILES)
       set(install_dir lib)
-    elseif("${file_full_lower}" MATCHES "\\.lnk$")
-      #Assuming the file is linked to a file with same name without .lnk extension
-      get_filename_component(real_file "${file_full_lower}" NAME_WE)
-      get_filename_component(real_file_PATH "${real_file}" PATH)
-      get_filename_component(real_file_PATH "${real_file_PATH}" PATH)
-      set(install_type "symlink")
-      set(install_dir ${real_file_PATH})
-      set(linked_to_file ${real_file})
-    elseif("${file_full_lower}" MATCHES "\\.prl$")
+    elseif("${sfile_ABS_LOWER}" MATCHES "\\.lnk$")
+      #we don't install symlink on windows. issue a warning
+      message(WARNING "${sfile_ABS} is a symbolic link and this will be excluded from package") 
       continue()
-    elseif("${file_full_lower}" MATCHES "\\.la$")
+    elseif("${sfile_ABS_LOWER}" MATCHES "\\.prl$")
       continue()
-    else()
-      execute_process(COMMAND "${FILE_COMMAND}" "${file_full}"
-	RESULT_VARIABLE file_rv
-	OUTPUT_VARIABLE file_ov
-	ERROR_VARIABLE file_ev
-	OUTPUT_STRIP_TRAILING_WHITESPACE
-	)
-      if(NOT file_rv STREQUAL "0")
-	message(FATAL_ERROR "${FILE_COMMAND} failed: ${file_rv}\n${file_ev}\n${file_ov}")
-      endif()
-      string(REPLACE "${file_full}" " _file_full_ " file_ov "${file_ov}")
-      string(TOLOWER "${file_ov}" file_ov)
-
-      # below executable check works for both mac osx and linux
-      if("${file_ov}" MATCHES "executable")
-	set(install_type PROGRAMS)
-	set(install_dir bin)
-	# detect position independent executables on Linux,
-	# where "file" gives "dynamically linked (uses shared libraries)"
-      elseif("${file_ov}" MATCHES "dynamically linked.*\(uses shared libs\)")
-	set(install_type FILES)
-	set(install_dir lib)
-	# detect position independent executables on Linux,
-	# where "file" gives "shared object ... (uses shared libraries)"
-      elseif("${file_ov}" MATCHES "shared object.*\(uses shared libs\)")
-	set(install_type FILES)
-	set(install_dir lib)
-	# detect shared libraries on Linux,
-	# where "file" gives "ELF 64-bit LSB shared object, AMD x86-64, version 1 (SYSV), not stripped"
-      elseif("${file_ov}" MATCHES "elf.*shared object.*version")
-	set(install_type FILES)
-	set(install_dir lib)
-	# "file" version 5.22 does not print "(used shared libraries)"
-	# but uses "interpreter"
-      elseif("${file_ov}" MATCHES "shared object.*interpreter")
-	set(install_type FILES)
-	set(install_dir lib)
-	# detect shared libraries on Mac OSX
-	# where "file" gives "Mach-O 64-bit x86_64 dynamically linked shared library"
-      elseif("${file_ov}" MATCHES "mach-o.*dynamically linked shared library")
-	set(install_type FILES)
-	set(install_dir lib)
-	#below check is redundant.  detect executables on Mac OSX
-	# where "file" gives "Mach-O 64-bit x86_64 executable"
-      elseif("${file_ov}" MATCHES "mach-o.*executable")
-	set(install_type PROGRAMS)
-	set(install_dir bin)
-	# detect shared libraries on Mac OSX
-	# where "file" gives "Mach-O 64-bit x86_64 bundle"
-      elseif("${file_ov}" MATCHES "mach-o.*bundle")
-	set(install_type FILES)
-	set(install_dir lib)
-      elseif("${file_ov}" MATCHES "mach-o.*bundle")
-	set(install_type FILES)
-	set(install_dir lib)
-      elseif("${file_ov}" MATCHES "symbolic link")
-	#Now find where the symlink is linked to.
-	#Do a regex replace
-	string(REGEX REPLACE "_file_full_*.*symbolic.link.to." "" target_file ${file_ov})
-	#older version of file command output has  [`} character(remove it).
-	string(REPLACE "`" "" target_file ${target_file} )
-	#older version of file command output has  {'} character(remove it).
-	string(REPLACE "'" "" target_file "${target_file}")
-	#strip final output
-	string(STRIP ${target_file} target_file)
-	setif_value_in_list(is_gtk_lib "${sfile_NAME}" GTK_LIB_LIST_1)
-	set(lib_dir "lib")
-	if(is_gtk_lib)
-	  set(lib_dir "lib/gtk")
-	  set(install_dir "lib/gtk")
-	endif()
-	
-	file(APPEND
-	  ${CMAKE_BINARY_DIR}/make_symlinks
-	  "ln -sf \"$OUT_DIR/${lib_dir}/${target_file}\" \"$OUT_DIR/${lib_dir}/${sfile_NAME}\" \n"
-	  )
-
-	continue()
-      endif()
-
-    endif()
-
-    if("${sfile_NAME}" MATCHES "^otbapp_")
+    elseif("${sfile_ABS_LOWER}" MATCHES "\\.la$")
+      continue()
+    elseif("${sfile_NAME_LOWER}" MATCHES "^otbapp_")
       set(install_dir "lib/otb/applications")
       set(install_type PROGRAMS)
-      ########### install cli and gui script for each application ###########
-      set(WRAPPER_SCRIPT_EXT "")
-      if(WIN32)
-	set(WRAPPER_SCRIPT_EXT ".bat")
-      endif()
-      
-      set(${src_file_NAME_WE}_CLI "${SUPERBUILD_INSTALL_DIR}/bin/otbcli_${src_file_NAME_WE}${WRAPPER_SCRIPT_EXT}")
-      set(${src_file_NAME_WE}_GUI "${SUPERBUILD_INSTALL_DIR}/bin/otbgui_${src_file_NAME_WE}${WRAPPER_SCRIPT_EXT}")
-      
-      string(REPLACE "otbapp_" "" ${src_file_NAME_WE}_GUI ${${src_file_NAME_WE}_GUI})
-      string(REPLACE "otbapp_" "" ${src_file_NAME_WE}_CLI ${${src_file_NAME_WE}_CLI})
-      
-      if(NOT EXISTS "${${src_file_NAME_WE}_CLI}")
-	message(FATAL_ERROR "Cannot find ${${src_file_NAME_WE}_CLI} for ${src_file_NAME_WE}")
-      endif()
-
-      if(NOT EXISTS "${${src_file_NAME_WE}_GUI}")
-	message(FATAL_ERROR "Cannot find ${${src_file_NAME_WE}_GUI} for ${src_file_NAME_WE}")
-      endif()
-
-      install(PROGRAMS
-	${${src_file_NAME_WE}_CLI}
-      	${${src_file_NAME_WE}_GUI}
-	DESTINATION
-	${PKG_STAGE_DIR}/bin )
-    endif()
-
-    if(install_type AND install_dir)
-      install(${install_type} "${sfile}"
-	DESTINATION
-	"${PKG_STAGE_DIR}/${install_dir}"
-	)
+      install_otbapp_wrapper_scripts(${sfile_NAME})
     else()
-      message(FATAL_ERROR "sfile=${sfile} || file_ov=${file_ov}")
-    endif()    
+      if(UNIX)
+	#the last else() loop where we run a 'file' command to find file type and directory
+	set(install_type)
+	set(install_dir)
+	#message("sfile_ABS=${sfile_ABS}")
+	detect_using_file_command(${sfile_ABS} install_type install_dir)
+      endif(UNIX)
+    endif()
     
-  endforeach()
-
-  
+    if(NOT install_type OR NOT install_type)
+      message(FATAL_ERROR "install_type OR install_dir is empty\ninstall_type=${install_dir}\ninstall_dir=${install_dir}")
+      return()
+    endif()
+    
+    if ( NOT install_type STREQUAL "symlink")
+       install(${install_type} "${sfile}"
+     	DESTINATION
+     	"${PKG_STAGE_DIR}/${install_dir}"
+     	)
+    
+     endif()
+  endforeach()  
 endfunction()   
 

Packaging/isfile_symlink.cmake

@@ -10,14 +10,16 @@ function(isfile_symlink file result_var1 result_var2)
   get_filename_component(file_full "${file}" ABSOLUTE)
   string(TOLOWER "${file_full}" file_full_lower)
 
-  # If file name ends in .exe on Windows, *assume* executable:
+  # If file name ends in .lnk on Windows,
+  # *assume* symlink a.k.a shortcut.
   #
   if(WIN32 AND NOT UNIX)
     if("${file_full_lower}" MATCHES "\\.lnk$")
       set(${result_var1} 1 PARENT_SCOPE)
-      #Assuming the file is linked to a file with same name without .lnk extension
-      get_filename_component(name_we_lnk "${file_full_lower}" NAME_WE)
-      set(${result_var2} "${name_we_lnk}" PARENT_SCOPE)
+      #Assuming the file is linked to a file
+      #with same name without .lnk extension
+      get_filename_component(file_full_name_we "${file_full}" NAME_WE)
+      set(${result_var2} "${file_full_name_we}" PARENT_SCOPE)
       return()
     endif()
 
@@ -27,7 +29,8 @@ function(isfile_symlink file result_var1 result_var2)
     #
   endif()
 
-  #if we are not on a unix or unix-like platform, then we don't have any business here
+  #if we are not on a unix or unix-like platform,
+  #then we don't have any business after this line.
   if(NOT UNIX)
     return()
   endif()
@@ -38,49 +41,65 @@ function(isfile_symlink file result_var1 result_var2)
   # If the file command's output contains "executable" and does *not* contain
   # "text" then it is likely an executable suitable for prerequisite analysis
   # via the get_prerequisites macro.
-  #
-  if(NOT FILE_COMMAND)
-    message(FATAL_ERROR "warning: No 'file' command, cannot continue...")
-  endif()
-
-  execute_process(COMMAND "${FILE_COMMAND}" "${file_full}"
-    RESULT_VARIABLE file_rv
-    OUTPUT_VARIABLE file_ov
-    ERROR_VARIABLE file_ev
+  
+  execute_process(COMMAND "${READLINK}" "${file_full}"
+    RESULT_VARIABLE readlink_rv
+    OUTPUT_VARIABLE readlink_ov
+    ERROR_VARIABLE readlink_ev
     OUTPUT_STRIP_TRAILING_WHITESPACE
     )
-  if(NOT file_rv STREQUAL "0")
-    message(FATAL_ERROR "${FILE_COMMAND} failed: ${file_rv}\n${file_ev}")
+
+  if(PKG_DEBUG)
+    message("${READLINK} on '${file_full} has output: '${readlink_ov}'\nreadlink_ev=${readlink_ev}")
+  endif()
+  
+  if(readlink_rv STREQUAL "1")
+    set(${result_var1} 0 PARENT_SCOPE)
+    set(${result_var2} "" PARENT_SCOPE)
+    return()
   endif()
 
-  # Replace the name of the file in the output with a placeholder token
-  # (the string " _file_full_ ") so that just in case the path name of
-  # the file contains the word "text" or "executable" we are not fooled
-  # into thinking "the wrong thing" because the file name matches the
-  # other 'file' command output we are looking for...
-  #
-  string(REPLACE "${file_full}" " _file_full_ " file_ov "${file_ov}")
-  string(TOLOWER "${file_ov}" file_ov_lower)
+  #got a symlink!. set result_var1 to TRUE
+  set(${result_var1} 1 PARENT_SCOPE)
 
-  # message(FATAL_ERROR "file_ov='${file_ov}'")
-  if("${file_ov_lower}" MATCHES "symbolic link")
-    set(${result_var1} 1 PARENT_SCOPE)
-    #Now find where the symlink is linked to.
-    #Do a regex replace
-    string(REGEX REPLACE "_file_full_*.*symbolic.link.to." "" symlinked_to ${file_ov})
+  #Now get the resolved link to result_var2
+  set(symlinked_to)
+  string(STRIP ${readlink_ov} symlinked_to)
+  set(${result_var2} "${symlinked_to}" PARENT_SCOPE)
 
-    #older version of file command output has  [`} character(remove it).
-    string(REPLACE "`" "" symlinked_to ${symlinked_to} )
+  return()
 
-    #older version of file command output has  {'} character(remove it).
-    string(REPLACE "'" "" symlinked_to "${symlinked_to}")
+  #  message(FATAL_ERROR "xx${READLINK} failed on '${file_full}' \nExit status: '${readlink_rv}' \nOutput: '${readlink_ov}' \nError status: '${readlink_ev}'")
 
-    #strip final output
-    string(STRIP ${symlinked_to} symlinked_to)
-    set(${result_var2} "${symlinked_to}" PARENT_SCOPE)
 
-    #message(FATAL_ERROR "${file_full} is symlinked_to ${symlinked_to}")
-    return()
-  endif()
+  # # Replace the name of the file in the output with a placeholder token
+  # # (the string " _file_full_ ") so that just in case the path name of
+  # # the file contains the word "text" or "executable" we are not fooled
+  # # into thinking "the wrong thing" because the file name matches the
+  # # other 'file' command output we are looking for...
+  # #
+  # string(REPLACE "${file_full}" " _file_full_ " file_ov "${file_ov}")
+  # string(TOLOWER "${file_ov}" file_ov_lower)
+
+  # # message(FATAL_ERROR "file_ov='${file_ov}'")
+  # if("${file_ov_lower}" MATCHES "symbolic link")
+  #   set(${result_var1} 1 PARENT_SCOPE)
+  #   #Now find where the symlink is linked to.
+  #   #Do a regex replace
+  #   string(REGEX REPLACE "_file_full_*.*symbolic.link.to." "" symlinked_to ${file_ov})
+
+  #   #older version of file command output has  [`} character(remove it).
+  #   string(REPLACE "`" "" symlinked_to ${symlinked_to} )
+
+  #   #older version of file command output has  {'} character(remove it).
+  #   string(REPLACE "'" "" symlinked_to "${symlinked_to}")
+
+  #   #strip final output
+  #   string(STRIP ${symlinked_to} symlinked_to)
+  #   set(${result_var2} "${symlinked_to}" PARENT_SCOPE)
+
+  #   #message(FATAL_ERROR "${file_full} is symlinked_to ${symlinked_to}")
+  #   return()
+  # endif()
 
 endfunction()

Packaging/process_file_recurse.cmake

@@ -98,7 +98,7 @@ function(process_file_recurse input_file)
       search_library(${item} PKG_SEARCHDIRS item_full_path)
       set(is_a_symlink FALSE)
       set(item_target_file)
-      isfile_symlink("${item_full_path}" is_a_symlink item_target_file)      
+      isfile_symlink("${item_full_path}" is_a_symlink item_target_file)
       if(is_a_symlink)
         set(${item}_RESOLVED TRUE CACHE INTERNAL "")
         set(item ${item_target_file})

Packaging/testing.cmake

@@ -3,7 +3,7 @@
 #          [WORKING_DIRECTORY <dir>])
 
 set(testing_dir ${CMAKE_BINARY_DIR}/tests)