build.py: Add option to call cpack

Adds --with-cpack option.

- macOS: does nothing (we already create a better, signed disk image)
- Linux: creates qtcreator.deb in build directory
- Windows: Checks for NSIS and WIX installation,
  creates qtcreator.exe and qtcreator.msi as appropriate

Change-Id: Ie7816d04cb2e01e90795481e1519b0a6645f5cd3
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

scripts/build.py

@@ -7,8 +7,8 @@ from __future__ import print_function
 
 import argparse
 import collections
-import glob
 import os
+import shutil
 
 import common
 
@@ -70,6 +70,8 @@ def get_arguments():
                         action='store_true', default=False)
     parser.add_argument('--with-pch', help='Enable building with PCH',
                         action='store_true', default=False)
+    parser.add_argument('--with-cpack', help='Create packages with cpack',
+                        action='store_true', default=False)
     parser.add_argument('--add-path', help='Prepends a CMAKE_PREFIX_PATH to the build',
                         action='append', dest='prefix_paths', default=[])
     parser.add_argument('--add-module-path', help='Prepends a CMAKE_MODULE_PATH to the build',
@@ -92,6 +94,23 @@ def get_arguments():
 
     if not args.qt_path and not args.no_qtcreator:
         parser.error("argument --qt-path is required if --no-qtcreator is not given")
+
+    if args.with_cpack:
+        if common.is_mac_platform():
+            print('warning: --with-cpack is not supported on macOS, turning off')
+            args.with_cpack = False
+        elif common.is_linux_platform():
+            args.cpack_generators = ['DEB']
+        elif common.is_windows_platform():
+            args.cpack_generators = []
+            if shutil.which('makensis'):
+                args.cpack_generators += ['NSIS64']
+            if shutil.which('candle') and shutil.which('torch'):
+                args.cpack_generators += ['WIX']
+            else:
+                print('warning: could not find NSIS or WIX, turning cpack off')
+                args.with_cpack = False
+
     return args
 
 def common_cmake_arguments(args):
@@ -149,7 +168,6 @@ def build_qtcreator(args, paths):
                   '-DBUILD_DEVELOPER_DOCS=' + cmake_option(not args.no_docs),
                   '-DBUILD_EXECUTABLE_SDKTOOL=OFF',
                   '-DQTC_FORCE_XCB=ON',
-                  '-DCMAKE_INSTALL_PREFIX=' + common.to_posix_path(paths.install),
                   '-DWITH_TESTS=' + cmake_option(args.with_tests)]
     cmake_args += common_cmake_arguments(args)
 
@@ -168,6 +186,9 @@ def build_qtcreator(args, paths):
         cmake_args += ['-DWITH_SANITIZE=ON',
                        '-DSANITIZE_FLAGS=' + ",".join(args.sanitize_flags)]
 
+    if args.with_cpack:
+        cmake_args += ['-DCPACK_PACKAGE_FILE_NAME=qtcreator' + args.zip_infix]
+
     cmake_args += args.config_args
 
     common.check_print_call(cmake_args + [paths.src], paths.build)
@@ -288,6 +309,8 @@ def package_qtcreator(args, paths):
                                      paths.src,
                                      paths.install],
                                     paths.result)
+    if args.with_cpack and args.cpack_generators:
+        common.check_print_call(['cpack', '-G', ';'.join(args.cpack_generators)], paths.build)
 
 
 def get_paths(args):