Am 23.01.23 um 20:38 schrieb Andrey Drobyshev:

Hi Stefan,

On 1/23/23 19:28, Stefan Weil wrote:
Hi,

cross builds fail with this code. Please see details below.

Am 29.11.22 um 18:38 schrieb Andrey Drobyshev via:
This commit allows QGA to write to Windows event log using Win32 API's
ReportEvent() [1], much like syslog() under *nix guests.

In order to generate log message definitions we use a very basic message
text file [2], so that every QGA's message gets ID 1.  The tools
"windmc" and "windres" respectively are used to generate ".rc" file and
COFF object file, and then the COFF file is linked into qemu-ga.exe.

[1]
https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-reporteventa
[2]
https://learn.microsoft.com/en-us/windows/win32/eventlog/message-text-files

Originally-by: Yuri Pudgorodskiy <y...@virtuozzo.com>
Signed-off-by: Andrey Drobyshev <andrey.drobys...@virtuozzo.com>
---
   configure                 |  3 +++
   qga/installer/qemu-ga.wxs |  5 +++++
   qga/main.c                | 16 +++++++++++++---
   qga/meson.build           | 19 ++++++++++++++++++-
   qga/messages-win32.mc     |  9 +++++++++
   5 files changed, 48 insertions(+), 4 deletions(-)
   create mode 100644 qga/messages-win32.mc

diff --git a/configure b/configure
index 26c7bc5154..789a4f6cc9 100755
--- a/configure
+++ b/configure
@@ -372,6 +372,7 @@ smbd="$SMBD"
   strip="${STRIP-${cross_prefix}strip}"
   widl="${WIDL-${cross_prefix}widl}"
   windres="${WINDRES-${cross_prefix}windres}"
+windmc="${WINDMC-${cross_prefix}windmc}"
Here the needed cross prefix is added ...

   pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
   query_pkg_config() {
       "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
[...]
diff --git a/qga/meson.build b/qga/meson.build
index 3cfb9166e5..1ff159edc1 100644
--- a/qga/meson.build
+++ b/qga/meson.build
@@ -98,7 +98,24 @@ if targetos == 'windows'
     endif
   endif
   -qga = executable('qemu-ga', qga_ss.sources(),
+qga_objs = []
+if targetos == 'windows'
+  windmc = find_program('windmc', required: true)
... but here the cross prefix is missing and the cross build aborts
because windmc does not exist.
There's no need for the cross prefix here.  After you've run ./configure
with --cross-prefix, argument, you'll see the following in
build/config-meson.cross file:

[binaries]
....
widl = ['x86_64-w64-mingw32-widl']
windres = ['x86_64-w64-mingw32-windres']
windmc = ['x86_64-w64-mingw32-windmc']

And these are the actual values meson's find_program() is going to be
looking for.  So it doesn't seem like there's anything broken here, it's
a matter of build requirements.


My configure terminates with an error because of the missing windmc before it has written config-meson.cross. I have run an incremental build:

Program windmc found: NO

../../../qga/meson.build:103:2: ERROR: Program 'windmc' not found or not executable

A full log can be found at /qemu/bin/debug/x86_64-w64-mingw32/meson-logs/meson-log.txt
ninja: error: rebuilding 'build.ninja': subcommand failed
FAILED: build.ninja
/usr/bin/python3 /qemu/meson/meson.py --internal regenerate /qemu /home/stefan/src/gitlab/qemu-project/qemu/bin/debug/x86_64-w64-mingw32 --backend ninja
make: *** [Makefile:165: run-ninja] Fehler 1
make: Verzeichnis „/qemu/bin/debug/x86_64-w64-mingw32“ wird verlassen

A clean fresh build works indeed fine.

Stefan



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