Preserve the functionality of the environment variables, but
allow using the command line instead.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 configure                     | 16 +++++++++-------
 meson_options.txt             |  7 +++++++
 qga/meson.build               |  9 ++++++---
 scripts/meson-buildoptions.sh |  9 +++++++++
 4 files changed, 31 insertions(+), 10 deletions(-)

diff --git a/configure b/configure
index 4b24c572d56..8827a29bf4c 100755
--- a/configure
+++ b/configure
@@ -1592,12 +1592,6 @@ echo >> $config_host_mak
 
 echo all: >> $config_host_mak
 
-if test "$targetos" = "windows"; then
-  echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER-QEMU}" >> $config_host_mak
-  echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO-Linux}" >> $config_host_mak
-  echo "QEMU_GA_VERSION=${QEMU_GA_VERSION-$(cat "$source_path"/VERSION)}" >> $config_host_mak
-fi
-
 echo "SRC_PATH=$source_path" >> $config_host_mak
 echo "TARGET_DIRS=$target_list" >> $config_host_mak
 echo "GDB=$gdb_bin" >> $config_host_mak
@@ -1724,6 +1718,15 @@ if test "$skip_meson" = no; then
   if test "$SMBD" != ''; then
     echo "smbd = $(meson_quote "$SMBD")" >> $cross
   fi
+  if test "${QEMU_GA_MANUFACTURER}" != ''; then
+    echo "qemu_ga_manufacturer = $(meson_quote "${QEMU_GA_MANUFACTURER}")" >> $cross
+  fi
+  if test "${QEMU_GA_DISTRO}" != ''; then
+    echo "qemu_ga_distro = $(meson_quote "${QEMU_GA_DISTRO}")" >> $cross
+  fi
+  if test "${QEMU_GA_VERSION}" != ''; then
+    echo "qemu_ga_version = $(meson_quote "${QEMU_GA_VERSION}")" >> $cross
+  fi
 
   echo >> $cross
   echo "[binaries]" >> $cross
@@ -1775,7 +1778,6 @@ if test "$skip_meson" = no; then
 
   rm -rf meson-private meson-info meson-logs
 
-  # Built-in options
   test "$download" = "disabled" && meson_option_add "--wrap-mode=nodownload"
   test "$default_feature" = no && meson_option_add -Dauto_features=disabled
   test "$static" = yes && meson_option_add -Dprefer_static=true
diff --git a/meson_options.txt b/meson_options.txt
index e237b268469..1b0c02b4a58 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -353,5 +353,12 @@ option('qom_cast_debug', type: 'boolean', value: true,
 option('slirp_smbd', type : 'feature', value : 'auto',
        description: 'use smbd (at path --smbd=*) in slirp networking')
 
+option('qemu_ga_manufacturer', type: 'string', value: 'QEMU',
+       description: '"manufacturer" name for qemu-ga registry entries')
+option('qemu_ga_distro', type: 'string', value: 'Linux',
+       description: 'second path element in qemu-ga registry entries')
+option('qemu_ga_version', type: 'string', value: '',
+       description: 'version number for qemu-ga installer')
+
 option('hexagon_idef_parser', type : 'boolean', value : true,
        description: 'use idef-parser to automatically generate TCG code for the Hexagon frontend')
diff --git a/qga/meson.build b/qga/meson.build
index 59cae0cc6ee..940a51d55db 100644
--- a/qga/meson.build
+++ b/qga/meson.build
@@ -145,6 +145,9 @@ if targetos == 'windows'
     else
       libpcre = 'libpcre2'
     endif
+    qga_msi_version = get_option('qemu_ga_version') == '' \
+      ? project.version() \
+      : get_option('qemu_ga_version')
     qga_msi = custom_target('QGA MSI',
                             input: files('installer/qemu-ga.wxs'),
                             output: 'qemu-ga-@0@.msi'.format(host_arch),
@@ -155,9 +158,9 @@ if targetos == 'windows'
                               qemu_ga_msi_vss,
                               '-D', 'BUILD_DIR=' + meson.project_build_root(),
                               '-D', 'BIN_DIR=' + glib_pc.get_variable('bindir'),
-                              '-D', 'QEMU_GA_VERSION=' + config_host['QEMU_GA_VERSION'],
-                              '-D', 'QEMU_GA_MANUFACTURER=' + config_host['QEMU_GA_MANUFACTURER'],
-                              '-D', 'QEMU_GA_DISTRO=' + config_host['QEMU_GA_DISTRO'],
+                              '-D', 'QEMU_GA_VERSION=' + qga_msi_version,
+                              '-D', 'QEMU_GA_MANUFACTURER=' + get_option('qemu_ga_manufacturer'),
+                              '-D', 'QEMU_GA_DISTRO=' + get_option('qemu_ga_distro'),
                               '-D', 'LIBPCRE=' + libpcre,
                             ])
     all_qga += [qga_msi]
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
index dec33820163..bda88993bd1 100644
--- a/scripts/meson-buildoptions.sh
+++ b/scripts/meson-buildoptions.sh
@@ -64,6 +64,12 @@ meson_options_help() {
   printf "%s\n" '  --localstatedir=VALUE    Localstate data directory [/var/local]'
   printf "%s\n" '  --mandir=VALUE           Manual page directory [share/man]'
   printf "%s\n" '  --prefix=VALUE           Installation prefix [/usr/local]'
+  printf "%s\n" '  --qemu-ga-distro=VALUE   second path element in qemu-ga registry entries'
+  printf "%s\n" '                           [Linux]'
+  printf "%s\n" '  --qemu-ga-manufacturer=VALUE'
+  printf "%s\n" '                           "manufacturer" name for qemu-ga registry entries'
+  printf "%s\n" '                           [QEMU]'
+  printf "%s\n" '  --qemu-ga-version=VALUE  version number for qemu-ga installer'
   printf "%s\n" '  --smbd=VALUE             Path to smbd for slirp networking'
   printf "%s\n" '  --sysconfdir=VALUE       Sysconf data directory [etc]'
   printf "%s\n" '  --tls-priority=VALUE     Default TLS protocol/cipher priority string'
@@ -422,6 +428,9 @@ _meson_option_parse() {
     --enable-qed) printf "%s" -Dqed=enabled ;;
     --disable-qed) printf "%s" -Dqed=disabled ;;
     --firmwarepath=*) quote_sh "-Dqemu_firmwarepath=$(meson_option_build_array $2)" ;;
+    --qemu-ga-distro=*) quote_sh "-Dqemu_ga_distro=$2" ;;
+    --qemu-ga-manufacturer=*) quote_sh "-Dqemu_ga_manufacturer=$2" ;;
+    --qemu-ga-version=*) quote_sh "-Dqemu_ga_version=$2" ;;
     --with-suffix=*) quote_sh "-Dqemu_suffix=$2" ;;
     --enable-qga-vss) printf "%s" -Dqga_vss=enabled ;;
     --disable-qga-vss) printf "%s" -Dqga_vss=disabled ;;
-- 
2.41.0