编译错误：Color.cpp

System Information

Alpine Linux，一个常用于Docker的Linux发行版，它的软件包构建系统APKBUILD说是抄袭Arch的PKGBUILD也不为过。

hp:~/fcitx5$ neofetch --off

tis@hp 
------ 
OS: Alpine Linux edge x86_64 
Host: HP Pavilion Sleekbook 14 PC 08801000003B5900000300100 
Kernel: 5.4.68-0-lts 
Uptime: 1 hour, 49 mins 
Packages: 488 (apk) 
Shell: ash 
Resolution: 1366x768 
DE: Xfce 4.14 
Theme: Greybird [GTK2], Adwaita [GTK3] 
Icons: Faenza [GTK2], Adwaita [GTK3] 
Terminal: xfce4-terminal 
Terminal Font: Monospace 12 
CPU: Intel i5-3317U (4) @ 2.600GHz 
GPU: NVIDIA GeForce 610M/710M/810M/820M / GT 620M/625M/630M/720M 
GPU: Intel 3rd Gen Core processor Graphics Controller 
Memory: 1367MiB / 3828MiB

How the bug appears

国庆去Arch上找来fcitx5和xcb-imdkit的PKGBUILD文件，改了一下成APKBUILD（附在后面），后者几下搞好，前者怎么也搞不定，总是卡在lib/fcitx-utils/color.cpp那里：

-- The C compiler identification is GNU 10.2.0
-- The CXX compiler identification is GNU 10.2.0

# 中间省略

/home/tis/fcitx5/src/fcitx5-401a81e6f1916cf21d15381508e716ef3e2a5cbf/src/lib/fcitx-utils/color.cpp:50:13: error: expected constructor, destructor, or type conversion before '(' token
   50 | Color::Color(ushort r, ushort g, ushort b, ushort alpha)
      |             ^

What I've done

有人说是gcc的bug，于是我写了一个linux.toolchain.cmake把编译器改成clang

    cmake_minimum_required( VERSION 2.6.3 )
    set(CMAKE_SYSTEM_NAME Linux )

    SET (CMAKE_C_COMPILER             "/usr/bin/clang")
    SET (CMAKE_C_FLAGS                "-Wall -std=c99")
    SET (CMAKE_C_FLAGS_DEBUG          "-g")
    SET (CMAKE_C_FLAGS_MINSIZEREL     "-Os -DNDEBUG")
    SET (CMAKE_C_FLAGS_RELEASE        "-O4 -DNDEBUG")
    SET (CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 -g")

    SET (CMAKE_CXX_COMPILER             "/usr/bin/clang++")
    SET (CMAKE_CXX_FLAGS                "-Wall")
    SET (CMAKE_CXX_FLAGS_DEBUG          "-g")
    SET (CMAKE_CXX_FLAGS_MINSIZEREL     "-Os -DNDEBUG")
    SET (CMAKE_CXX_FLAGS_RELEASE        "-O4 -DNDEBUG")
    SET (CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -g")

    SET (CMAKE_AR      "/usr/bin/llvm-ar")
    SET (CMAKE_LINKER  "/usr/bin/llvm-ld")
    SET (CMAKE_NM      "/usr/bin/llvm-nm")
    SET (CMAKE_OBJDUMP "/usr/bin/llvm-objdump")
    SET (CMAKE_RANLIB  "/usr/bin/llvm-ranlib")

错误依旧


-- The C compiler identification is Clang 10.0.1
-- The CXX compiler identification is Clang 10.0.1

# 中间省略

/home/tis/fcitx5/src/fcitx5-401a81e6f1916cf21d15381508e716ef3e2a5cbf/src/lib/fcitx-utils/color.cpp:50:14: error: 
      unknown type name 'ushort'; did you mean 'short'?
Color::Color(ushort r, ushort g, ushort b, ushort alpha)
             ^~~~~~
             short
/home/tis/fcitx5/src/fcitx5-401a81e6f1916cf21d15381508e716ef3e2a5cbf/src/lib/fcitx-utils/color.cpp:50:24: error: 
      unknown type name 'ushort'; did you mean 'short'?
Color::Color(ushort r, ushort g, ushort b, ushort alpha)
                       ^~~~~~
                       short
/home/tis/fcitx5/src/fcitx5-401a81e6f1916cf21d15381508e716ef3e2a5cbf/src/lib/fcitx-utils/color.cpp:50:34: error: 
      unknown type name 'ushort'; did you mean 'short'?
Color::Color(ushort r, ushort g, ushort b, ushort alpha)
                                 ^~~~~~
                                 short
/home/tis/fcitx5/src/fcitx5-401a81e6f1916cf21d15381508e716ef3e2a5cbf/src/lib/fcitx-utils/color.cpp:50:44: error: 
      unknown type name 'ushort'; did you mean 'short'?
Color::Color(ushort r, ushort g, ushort b, ushort alpha)
                                           ^~~~~~
                                           short
/home/tis/fcitx5/src/fcitx5-401a81e6f1916cf21d15381508e716ef3e2a5cbf/src/lib/fcitx-utils/color.cpp:50:8: error: 
      out-of-line definition of 'Color' does not match any declaration in
      'fcitx::Color'
Color::Color(ushort r, ushort g, ushort b, ushort alpha)
       ^~~~~
5 errors generated.

Appendices

APKBUILD File for fcitx5

pkgname=fcitx5
pkgver=0.0.0.20200929
pkgrel=1
_commit=401a81e6f1916cf21d15381508e716ef3e2a5cbf
_endictver=20121020
pkgdesc="Next generation of fcitx"
arch="x86_64"
url="https://github.com/fcitx/fcitx5"
license="LGPL"
depends="cairo libevent enchant2 libxcb iso-codes libxkbcommon-x11  libxkbcommon 
         pango libxcb xcb-util-wm libxkbfile fmt-dev gdk-pixbuf libexecinfo
         cldr-emoji-annotation dbus-glib json-c xcb-util-keysyms"
depends_dev="cairo-dev libevent-dev enchant2-dev libxcb-dev iso-codes-dev libexecinfo-dev
         libxkbcommon-dev pango-dev libxcb-dev xcb-util-wm-dev libxkbfile-dev fmt-dev gdk-pixbuf-dev
         dbus-glib-dev json-c-dev xcb-util-keysyms-dev"
makedepends="extra-cmake-modules $depends_dev"
source="https://github.com/fcitx/fcitx5/archive/$_commit/fcitx5-$_commit.tar.gz 
https://download.fcitx-im.org/data/en_dict-$_endictver.tar.gz"
builddir="$srcdir/"
prepare() {
  cd $srcdir/$pkgname-$_commit/src/modules/spell/dict
  ln -s "$srcdir"/en_dict-$_endictver.tar.gz ./
}

build() {
  cd $srcdir/$pkgname-$_commit
  cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_INSTALL_LIBDIR=/usr/lib -DENABLE_WAYLAND=0 -DUSE_SYSTEMD=0 .
  make
}

check() {
  cd $srcdir/$pkgname-$_commit
  make test
}

package() {
  cd $srcdir/$pkgname-$_commit
  make DESTDIR="$pkgdir" install
}
sha512sums="17f1309e4a8a3159a71c8e311fc17f9262790ed729c410398851f23ada506939aa620b509b6ced89ea25fda82d4313b646bf33c8be6fddf76a57518b1a8196dc  fcitx5-401a81e6f1916cf21d15381508e716ef3e2a5cbf.tar.gz
8418bd02492bfd786c0fab93be4400ef027ec8e9fac02220cc1f653f5eb67f54573a6a84a15baba19bb34ab892745c87df16499d6304ea75009131e2ab3b97f2  en_dict-20121020.tar.gz"

fcitx / fcitx5

编译错误：Color.cpp #127

System Information

How the bug appears

What I've done

Appendices