[PATCH] meson.build: Add --enable-use-pdb option

[Steve Aarnio <saarnio@qti.qualcomm.com>]

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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.

Signed-off-by: Steve Aarnio <saarnio@qti.qualcomm.com>
---
 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


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