configure, meson: move symlinking of ROMs to meson

This is useful because pc-bios/meson.build already has a list of all ROM
files, and thus does not need to use wildcards.  The problems with
wildcards are mentioned above the definition of the LINKS variable,
but then the recommendation is disattended.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220517092616.1272238-6-pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220527153603.887929-17-alex.bennee@linaro.org>

2 files changed, 12 insertions, 20 deletions

diff --git a/configure b/configure
index c88ef94fec..7b6adc29fe 100755
--- a/configure
+++ b/configure
@@ -2100,21 +2100,6 @@ LINKS="$LINKS tests/avocado tests/data"
 LINKS="$LINKS tests/qemu-iotests/check"
 LINKS="$LINKS python"
 LINKS="$LINKS contrib/plugins/Makefile "
-for bios_file in \
-    $source_path/pc-bios/*.bin \
-    $source_path/pc-bios/*.elf \
-    $source_path/pc-bios/*.lid \
-    $source_path/pc-bios/*.rom \
-    $source_path/pc-bios/*.dtb \
-    $source_path/pc-bios/*.img \
-    $source_path/pc-bios/openbios-* \
-    $source_path/pc-bios/u-boot.* \
-    $source_path/pc-bios/palcode-* \
-    $source_path/pc-bios/qemu_vga.ndrv
-
-do
-    LINKS="$LINKS pc-bios/$(basename $bios_file)"
-done
 for f in $LINKS ; do
     if [ -e "$source_path/$f" ]; then
         mkdir -p `dirname ./$f`
diff --git a/pc-bios/meson.build b/pc-bios/meson.build
index c86dedf7df..41ba1c0ec7 100644
--- a/pc-bios/meson.build
+++ b/pc-bios/meson.build
@@ -23,7 +23,7 @@ if unpack_edk2_blobs
   endforeach
 endif
 
-blobs = files(
+blobs = [
   'bios.bin',
   'bios-256k.bin',
   'bios-microvm.bin',
@@ -83,11 +83,18 @@ blobs = files(
   'npcm7xx_bootrom.bin',
   'vof.bin',
   'vof-nvram.bin',
-)
+]
 
-if get_option('install_blobs')
-  install_data(blobs, install_dir: qemu_datadir)
-endif
+ln_s = [find_program('ln', required: true), '-sf']
+foreach f : blobs
+  roms += custom_target(f,
+                build_by_default: have_system,
+                output: f,
+                input: files('meson.build'),            # dummy input
+                install: get_option('install_blobs'),
+                install_dir: qemu_datadir,
+                command: [ ln_s, meson.project_source_root() / 'pc-bios' / f, '@OUTPUT@' ])
+endforeach
 
 subdir('descriptors')
 subdir('keymaps')