On 18.03.2026 22:18, Steve Aarnio wrote:
This option will (attempt to) modify the QEMU compile and link flags to
emit PDB symbol files rather than the standard (DWARF?) symbol output
from gcc/clang.
This enables using native Windows debug tools (Windbg/Visual Studio) for
debugging QEMU.
While the change looks good (but please don't use html or
quoted-printable encoding when sending patches), the name for
the option is a bit.. non-English, so to say. It might be
--enable-pdb for example, or --use-pdb, but probably not
what's suggested initially. There's one more possible issue
with this approach: when pdb isn't supported by the compiler,
this option is silently ignored, instead of giving some
useful diagnostics.
Overall, I think there's no need to have separate option especially
for pdb, - it can be enabled on windows when --enable-debug is
specified (or is it --debug? I don't remember).
This code:
option_cflags = (get_option('debug') ? ['-g'] : [])
can be extended to add the necessary compiler options.
Thanks,
/mjt
Signed-off-by: Steve Aarnio <[email protected]>
---
meson.build | 5 +++++
meson_options.txt | 2 ++
2 files changed, 7 insertions(+)
diff --git a/meson.build b/meson.build
index d7c4095b39..d27581e0c2 100644
--- a/meson.build
+++ b/meson.build
@@ -692,6 +692,11 @@ endif
qemu_common_flags += hardening_flags
+if get_option('debug') and get_option('use_pdb')
+ qemu_common_flags += cc.get_supported_arguments('-g','-gcodeview','-
gcolumn-info','-fno-omit-frame-pointer')
+ qemu_ldflags += cc.get_supported_link_arguments('-g','-Wl,--pdb=')
+endif
+
# Collect warning flags we want to set, sorted alphabetically
warn_flags = [
# First enable interesting warnings
diff --git a/meson_options.txt b/meson_options.txt
index 31d5916cfc..b1f3250d5c 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -372,6 +372,8 @@ option('debug_stack_usage', type: 'boolean', value:
false,
description: 'measure coroutine stack usage')
option('qom_cast_debug', type: 'boolean', value: true,
description: 'cast debugging support')
+option('use_pdb', type: 'boolean', value: false,
+ description: 'use pdb symbol format on debug windows builds')
option('slirp_smbd', type : 'feature', value : 'auto',
description: 'use smbd (at path --smbd=*) in slirp networking')
--
2.53.0
