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Re: [PATCH for-7.0] meson.build: Fix dependency of page-vary-common.c to

From: Thomas Huth
Subject: Re: [PATCH for-7.0] meson.build: Fix dependency of page-vary-common.c to config-poison.h
Date: Wed, 30 Mar 2022 14:24:21 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.6.0

On 30/03/2022 14.05, Philippe Mathieu-Daudé wrote:
Hi Thomas,

On 30/3/22 13:48, Thomas Huth wrote:
Before compiling page-vary-common.c, we have to make sure that
config-poison.h has been generated (which is in the "genh" list).

I am a bit confused, "config-poison.h" is include by "exec/poison.h"
which is included by "qemu/osdep.h" for all non-softmmu code (tools,
common and -user).

Why is pagevary specific?

pagevary is certainly not specific here, we're doing this
all over the place in meson.build:

$ grep -r static_library.*genh meson.build
  libmodulecommon = static_library('module-common', files('module-common.c') + 
genh, pic: true, c_args: '-DBUILD_DSO')
  pagevary = static_library('page-vary-common', sources: pagevary + genh,
      sl = static_library(d + '-' + m, [genh, module_ss.sources()],
libqom = static_library('qom', qom_ss.sources() + genh,
libauthz = static_library('authz', authz_ss.sources() + genh,
libcrypto = static_library('crypto', crypto_ss.sources() + genh,
libio = static_library('io', io_ss.sources() + genh,
libmigration = static_library('migration', sources: migration_files + genh,
libblock = static_library('block', block_ss.sources() + genh,
libblockdev = static_library('blockdev', blockdev_ss.sources() + genh,
libqmp = static_library('qmp', qmp_ss.sources() + genh,
libchardev = static_library('chardev', chardev_ss.sources() + genh,
libhwcore = static_library('hwcore', sources: hwcore_ss.sources() + genh,

Shouldn't add genh to all common_ss[]?

Maybe the problem is how common_all[] is created?

Maybe there is a better way to handle these dependencies ...
but that's rather a bigger change and thus something for
the 7.1 cycle, I think.


Resolves: https://gitlab.com/qemu-project/qemu/-/issues/948
Signed-off-by: Thomas Huth <thuth@redhat.com>
  meson.build | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index aef724ad3c..04ce33fef1 100644
--- a/meson.build
+++ b/meson.build
@@ -2881,7 +2881,7 @@ if get_option('b_lto')
    if get_option('cfi')
      pagevary_flags += '-fno-sanitize=cfi-icall'
-  pagevary = static_library('page-vary-common', sources: pagevary,
+  pagevary = static_library('page-vary-common', sources: pagevary + genh,
                              c_args: pagevary_flags)
    pagevary = declare_dependency(link_with: pagevary)

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