[PULL v2 06/15] meson: fix keymaps without qemu-keymap

[Thomas Huth <thuth@redhat.com>]

From: Gerd Hoffmann <kraxel@redhat.com>

In case the qemu-keymap tool generating them is neither installed on the
system nor built from sources (due to xkbcommon not being available)
qemu will not find the keymaps when started directly from the build
tree,

This happens because commit ddcf607fa3d6 ("meson: drop keymaps symlink")
removed the symlink to the source tree, and the special handling for
install doesn't help in case we do not install qemu.

Lets fix that by simply copying over the file from the source tree as
fallback.

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200827102617.14448-1-kraxel@redhat.com>
[thuth: Rebased, changed "config_host['qemu_datadir']" to "qemu_datadir"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 pc-bios/keymaps/meson.build | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/pc-bios/keymaps/meson.build b/pc-bios/keymaps/meson.build
index bbac83ece3..2e2e0dfa3b 100644
--- a/pc-bios/keymaps/meson.build
+++ b/pc-bios/keymaps/meson.build
@@ -38,19 +38,29 @@ if meson.is_cross_build() or 'CONFIG_XKBCOMMON' not in config_host
 else
   native_qemu_keymap = qemu_keymap
 endif
+
 t = []
 foreach km, args: keymaps
-  t += custom_target(km,
-                     build_by_default: true,
-                     output: km,
-                     command: [native_qemu_keymap, '-f', '@OUTPUT@', args.split()],
-                     install_dir: qemu_datadir / 'keymaps')
+  if native_qemu_keymap.found()
+    # generate with qemu-kvm
+    t += custom_target(km,
+                       build_by_default: true,
+                       output: km,
+                       command: [native_qemu_keymap, '-f', '@OUTPUT@', args.split()],
+                       install_dir: qemu_datadir / 'keymaps')
+  else
+    # copy from source tree
+    t += custom_target(km,
+                       build_by_default: true,
+                       input: km,
+                       output: km,
+                       command: ['cp', '@INPUT@', '@OUTPUT@'],
+                       install_dir: qemu_datadir / 'keymaps')
+  endif
 endforeach
-if t.length() > 0
+
+if native_qemu_keymap.found()
   alias_target('update-keymaps', t)
-else
-  # install from the source tree
-  install_data(keymaps.keys(), install_dir: qemu_datadir / 'keymaps')
 endif
 
 install_data(['sl', 'sv'], install_dir: qemu_datadir / 'keymaps')
-- 
2.18.2