From ddf5226bd7e120a5ef6fdf5fb82be36a48844cb7 Mon Sep 17 00:00:00 2001
From: Stephen Kelly <stephen.kelly@kdab.com>
Date: Tue, 19 Jun 2012 17:09:23 +0200
Subject: Forward-port change to QT4_ADD_RESOURCES macro for missing rcc files.

Forward-port of commit 9ce67d30011db4528d3d0bbee36412e13cfb80cc in
cmake.git.

Change-Id: I2d6c14f68f1630fc0835b3103e5058f52c2d0d13
Reviewed-by: David Faure <faure@kde.org>
---
 src/corelib/Qt5CoreMacros.cmake | 40 ++++++++++++++++++++++++----------------
 1 file changed, 24 insertions(+), 16 deletions(-)

(limited to 'src/corelib/Qt5CoreMacros.cmake')

diff --git a/src/corelib/Qt5CoreMacros.cmake b/src/corelib/Qt5CoreMacros.cmake
index cbd141aeb3..9d5f85a441 100644
--- a/src/corelib/Qt5CoreMacros.cmake
+++ b/src/corelib/Qt5CoreMacros.cmake
@@ -176,23 +176,31 @@ function(QT5_ADD_RESOURCES outfiles )
         get_filename_component(infile ${it} ABSOLUTE)
         get_filename_component(rc_path ${infile} PATH)
         set(outfile ${CMAKE_CURRENT_BINARY_DIR}/qrc_${outfilename}.cxx)
-        #  parse file for dependencies
-        #  all files are absolute paths or relative to the location of the qrc file
-        file(READ "${infile}" _RC_FILE_CONTENTS)
-        string(REGEX MATCHALL "<file[^<]+" _RC_FILES "${_RC_FILE_CONTENTS}")
+
         set(_RC_DEPENDS)
-        foreach(_RC_FILE ${_RC_FILES})
-            string(REGEX REPLACE "^<file[^>]*>" "" _RC_FILE "${_RC_FILE}")
-            if(NOT IS_ABSOLUTE "${_RC_FILE}")
-                set(_RC_FILE "${rc_path}/${_RC_FILE}")
-            endif()
-            set(_RC_DEPENDS ${_RC_DEPENDS} "${_RC_FILE}")
-        endforeach()
-        # Since this cmake function is doing the dependency scanning for these files,
-        # let's make a configured file and add it as a dependency so cmake is run
-        # again when dependencies need to be recomputed.
-        qt5_make_output_file("${infile}" "" "qrc.depends" out_depends)
-        configure_file("${infile}" "${out_depends}" COPY_ONLY)
+        if(EXISTS "${infile}")
+            #  parse file for dependencies
+            #  all files are absolute paths or relative to the location of the qrc file
+            file(READ "${infile}" _RC_FILE_CONTENTS)
+            string(REGEX MATCHALL "<file[^<]+" _RC_FILES "${_RC_FILE_CONTENTS}")
+            foreach(_RC_FILE ${_RC_FILES})
+                string(REGEX REPLACE "^<file[^>]*>" "" _RC_FILE "${_RC_FILE}")
+                if(NOT IS_ABSOLUTE "${_RC_FILE}")
+                    set(_RC_FILE "${rc_path}/${_RC_FILE}")
+                endif()
+                set(_RC_DEPENDS ${_RC_DEPENDS} "${_RC_FILE}")
+            endforeach()
+            # Since this cmake macro is doing the dependency scanning for these files,
+            # let's make a configured file and add it as a dependency so cmake is run
+            # again when dependencies need to be recomputed.
+            qt5_make_output_file("${infile}" "" "qrc.depends" out_depends)
+            configure_file("${infile}" "${out_depends}" COPY_ONLY)
+        else()
+            # The .qrc file does not exist (yet). Let's add a dependency and hope
+            # that it will be generated later
+            set(out_depends)
+        endif()
+
         add_custom_command(OUTPUT ${outfile}
                            COMMAND ${QT_RCC_EXECUTABLE}
                            ARGS ${rcc_options} -name ${outfilename} -o ${outfile} ${infile}
-- 
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