frameworks/qt5base/files/qmake.mk

   1 #
   2 # Copyright (C) 2015 OpenWrt.org
   3 # Author: Mirko Vogt <mirko@openwrt.org>
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7
   8 # qmake - oh my.. qmake is supposed to generate Makefiles suitable for cross-compiling
   9 # however fails itself hard being used in a cross compiling toolchain in any sane way.
  10 #
  11 # There are the QT_INSTALL_* variables - which get set via Qt's configure options,
  12 # containing paths which become hardcoded into the qmake binary.
  13 # Those paths are supposed to refer to the target system, however are also used for
  14 # include and linker paths.
  15 # Hence, setting QT_INSTALL_PREFIX=/usr would result in -I/usr/include,
  16 # -L/usr/lib, etc., referencing the host headers and libraries.
  17 # The QT_SYSROOT variable looks most promising for distinguishing between
  18 # host and target specific paths, however it fails hard and is totally undocumented.
  19 # The extprefix variable tries to cover the situation, however actually just prepends
  20 # its path to the QT_INSTALL_* variables - basically cosmetics.
  21 #
  22 # The QT_HOST_* variables are used for host tools, libraries, mkspecs and its data.
  23 #
  24 # As a consequence we set QT_INSTALL_* and QT_HOST_* to absolute paths, which
  25 # inevitably results in the following issues:
  26 #
  27 #  - 'make install' results in paths like:
  28 #    /tmp/install_root/home/cross/openwrt/staging_dir/target-*/usr.
  29 #    This is workarounded by overriding the PKG_INSTALL_DIR, so the Makefiles don't
  30 #    have to care about that.
  31 #  - Once compiled, qmake's location and its requirements (mkspecs, etc.) are fixed,
  32 #    since its absolute paths were hardcoded. No moving around of the toolchain.
  33 #  - Those variables might be used for target binaries for some weird reason, so
  34 #    paths to the host staging_dir would make it to the target, logically leading to
  35 #    errors.
  36 #  - Paths might make it into target binaries, thus referencing non-existing
  37 #    objects on the target platform. Tihs behaviour wasn't observed so far, however
  38 #    one might use the QT_INSTALL_* variables for some weird reason during runtime.
  39
  40
  41 QT_EXTPREFIX:=$(STAGING_DIR)/$(CONFIGURE_PREFIX)
  42 QT_SYSROOT:=
  43 QT_INSTALL_CONFIGURATION:=/etc/qt5
  44 QT_INSTALL_PREFIX:=$(CONFIGURE_PREFIX)
  45 QT_INSTALL_LIBS:=$(QT_INSTALL_PREFIX)/lib
  46 QT_INSTALL_DATA:=$(QT_INSTALL_PREFIX)/share/qt5
  47 QT_INSTALL_HEADERS:=$(QT_INSTALL_PREFIX)/include
  48 QT_INSTALL_BINS:=$(QT_INSTALL_PREFIX)/bin
  49 QT_INSTALL_DOCS:=$(QT_INSTALL_DATA)/doc
  50 QT_INSTALL_TRANSLATIONS:=$(QT_INSTALL_DATA)/translations
  51 QT_INSTALL_ARCHDATA:=$(QT_INSTALL_LIBS)/qt5
  52 QT_INSTALL_LIBEXECS:=$(QT_INSTALL_ARCHDATA)
  53 QT_INSTALL_TESTS:=$(QT_INSTALL_ARCHDATA)/tests
  54 QT_INSTALL_PLUGINS:=$(QT_INSTALL_ARCHDATA)/plugins
  55 QT_INSTALL_IMPORTS:=$(QT_INSTALL_ARCHDATA)/imports
  56 QT_INSTALL_QML:=$(QT_INSTALL_ARCHDATA)/qml
  57 QT_INSTALL_EXAMPLES:=$(QT_INSTALL_ARCHDATA)/examples
  58 QT_INSTALL_DEMOS:=$(QT_INSTALL_EXAMPLES)
  59 QT_HOST_EXTPREFIX:=$(STAGING_DIR)/host
  60 QT_HOST_PREFIX:=$(QT_HOST_EXTPREFIX)
  61 QT_HOST_DATA:=$(QT_HOST_PREFIX)/share
  62 QT_HOST_BINS:=$(QT_HOST_PREFIX)/bin
  63 QT_HOST_LIBS:=$(QT_HOST_PREFIX)/lib
  64
  65 QMAKE_SPEC:=linux-g++
  66 QMAKE_XSPEC:=linux-openwrt-g++
  67
  68 QMAKE_SPECFILE:=$(QT_HOST_DATA)/mkspecs/$(QMAKE_XSPEC)
  69
  70 PKG_INSTALL_DIR_ROOT:=$(PKG_INSTALL_DIR)
  71 PKG_INSTALL_DIR:=$(PKG_INSTALL_DIR_ROOT)/$(STAGING_DIR)
  72
  73 define Build/Configure/Default
  74         TARGET_CROSS="$(TARGET_CROSS)" \
  75         TARGET_CFLAGS="$(TARGET_CPPFLAGS) $(TARGET_CFLAGS)" \
  76         TARGET_CXXFLAGS="$(TARGET_CPPFLAGS) $(TARGET_CXXFLAGS)" \
  77         TARGET_LDFLAGS="$(TARGET_LDFLAGS)" \
  78         qmake \
  79                 -spec $(QMAKE_SPECFILE) \
  80                 -o $(PKG_BUILD_DIR)/$(2)/Makefile \
  81                 $(PKG_BUILD_DIR)/$(2)/$(if $(1),$(1),$(PKG_NAME)).pro
  82 endef
  83
  84 # we need to pass everything to $(MAKE) as well, as Makefiles may invoke qmake once again for creating further Makefiles
  85 define Build/Compile/Default
  86         +TARGET_CROSS="$(TARGET_CROSS)" \
  87         TARGET_CFLAGS="$(TARGET_CPPFLAGS) $(TARGET_CFLAGS)" \
  88         TARGET_CXXFLAGS="$(TARGET_CPPFLAGS) $(TARGET_CXXFLAGS)" \
  89         TARGET_LDFLAGS="$(TARGET_LDFLAGS)" \
  90                 $(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR)/$(MAKE_PATH) \
  91                         $(1)
  92 endef
  93
  94 define Build/Install/Default
  95         INSTALL_ROOT="$(PKG_INSTALL_DIR_ROOT)" \
  96                 $(MAKE) -C $(PKG_BUILD_DIR)/$(MAKE_PATH) \
  97                         $(1) install
  98 endef
  99
 100 define Build/Install/HostFiles
 101         $(INSTALL_DIR) \
 102                 $(1)/host
 103
 104         $(CP) \
 105                 $(PKG_INSTALL_DIR)/host/* \
 106                 $(1)/host/
 107 endef
 108
 109 define Build/Install/Headers
 110         $(INSTALL_DIR) \
 111                 $(1)/$(QT_INSTALL_HEADERS)
 112
 113         $(CP) \
 114                 $(PKG_INSTALL_DIR)/$(QT_INSTALL_HEADERS)/* \
 115                 $(1)/$(QT_INSTALL_HEADERS)/
 116 endef
 117
 118 define Build/Install/Libs
 119         $(INSTALL_DIR) \
 120                 $(1)/$(QT_INSTALL_LIBS)
 121
 122         $(CP) \
 123                 $(PKG_INSTALL_DIR)/$(QT_INSTALL_LIBS)/$(2).so* \
 124                 $(1)/$(QT_INSTALL_LIBS)/
 125 endef
 126
 127 define Build/Install/Plugins
 128         $(INSTALL_DIR) \
 129                 $(1)/$(QT_INSTALL_PLUGINS)/$(2)
 130
 131         $(CP) \
 132                 $(PKG_INSTALL_DIR)/$(QT_INSTALL_PLUGINS)/$(2)/$(3).so* \
 133                 $(1)/$(QT_INSTALL_PLUGINS)/$(2)/
 134 endef
 135
 136 define Build/Install/Examples
 137         $(INSTALL_DIR) \
 138                 $(1)/$(QT_INSTALL_EXAMPLES)
 139
 140         $(CP) \
 141                 $(PKG_INSTALL_DIR)/$(QT_INSTALL_EXAMPLES)/* \
 142                 $(1)/$(QT_INSTALL_EXAMPLES)/
 143
 144         $(FIND) $(1)/usr/share/qt5/examples/ \
 145                 -type f \( -name '*.cpp' -o -name '*.h' -o -name '*.pro' -o -name '*.pri' \) | \
 146                 $(XARGS) $(RM) -vf
 147 endef