QEMU adds the path to glib.h is added to all compilation commands.
This is simpler due to the pervasive use of static_library, and was
grandfathered in from the previous Make-based build system. Until
Meson 0.63 the only way to do this was to detect glib in configure
and use add_project_arguments, but now it is possible to use
add_project_dependencies instead.
gmodule is detected in a separate variable and added via both
block_ss (for --enable-modules) and plugins/meson.build (for
--enable-plugins).
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
block/meson.build | 1 +
configure | 83 +---------------------------------------
contrib/plugins/Makefile | 4 +-
meson.build | 81 +++++++++++++++++++++++++++++++++------
plugins/meson.build | 2 +-
5 files changed, 74 insertions(+), 97 deletions(-)
diff --git a/block/meson.build b/block/meson.build
index b7c68b83a36f..f2e0e86f3b0a 100644
--- a/block/meson.build
+++ b/block/meson.build
@@ -145,6 +145,7 @@ block_gen_c = custom_target('block-gen.c',
block_ss.add(block_gen_c)
block_ss.add(files('stream.c'))
+block_ss.add(gmodule)
softmmu_ss.add(files('qapi-sysemu.c'))
diff --git a/configure b/configure
index 9c5393a25de7..fb28dd3963bd 100755
--- a/configure
+++ b/configure
@@ -1426,84 +1426,6 @@ if ! has "$pkg_config_exe"; then
error_exit "pkg-config binary '$pkg_config_exe' not found"
fi
-##########################################
-# glib support probe
-
-# When bumping glib_req_ver, please check also whether we should increase
-# the _WIN32_WINNT setting in osdep.h according to the value from glib
-glib_req_ver=2.56
-glib_modules=gthread-2.0
-if test "$modules" = yes; then
- glib_modules="$glib_modules gmodule-export-2.0"
-elif test "$plugins" = "yes"; then
- glib_modules="$glib_modules gmodule-no-export-2.0"
-fi
-
-for i in $glib_modules; do
- if $pkg_config --atleast-version=$glib_req_ver $i; then
- glib_cflags=$($pkg_config --cflags $i)
- glib_libs=$($pkg_config --libs $i)
- else
- error_exit "glib-$glib_req_ver $i is required to compile QEMU"
- fi
-done
-
-glib_bindir="$($pkg_config --variable=bindir glib-2.0)"
-if test -z "$glib_bindir" ; then
- glib_bindir="$($pkg_config --variable=prefix glib-2.0)"/bin
-fi
-
-# This workaround is required due to a bug in pkg-config file for glib as it
-# doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
-
-if test "$static" = yes && test "$mingw32" = yes; then
- glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
-fi
-
-# Sanity check that the current size_t matches the
-# size that glib thinks it should be. This catches
-# problems on multi-arch where people try to build
-# 32-bit QEMU while pointing at 64-bit glib headers
-cat > $TMPC <<EOF
-#include <glib.h>
-#include <unistd.h>
-
-#define QEMU_BUILD_BUG_ON(x) \
- typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
-
-int main(void) {
- QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
- return 0;
-}
-EOF
-
-if ! compile_prog "$glib_cflags" "$glib_libs" ; then
- error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
- "You probably need to set PKG_CONFIG_LIBDIR"\
- "to point to the right pkg-config files for your"\
- "build target"
-fi
-
-# Silence clang warnings triggered by glib < 2.57.2
-cat > $TMPC << EOF
-#include <glib.h>
-typedef struct Foo {
- int i;
-} Foo;
-static void foo_free(Foo *f)
-{
- g_free(f);
-}
-G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
-int main(void) { return 0; }
-EOF
-if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
- if cc_has_warning_flag "-Wno-unused-function"; then
- glib_cflags="$glib_cflags -Wno-unused-function"
- CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
- fi
-fi
-
##########################################
# fdt probe
@@ -2361,13 +2283,10 @@ echo "PYTHON=$python" >> $config_host_mak
echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
echo "MESON=$meson" >> $config_host_mak
echo "NINJA=$ninja" >> $config_host_mak
+echo "PKG_CONFIG=${pkg_config_exe}" >> $config_host_mak
echo "CC=$cc" >> $config_host_mak
echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
echo "QEMU_OBJCFLAGS=$QEMU_OBJCFLAGS" >> $config_host_mak
-echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
-echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
-echo "GLIB_BINDIR=$glib_bindir" >> $config_host_mak
-echo "GLIB_VERSION=$(pkg-config --modversion glib-2.0)" >> $config_host_mak
echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
echo "EXESUF=$EXESUF" >> $config_host_mak
diff --git a/contrib/plugins/Makefile b/contrib/plugins/Makefile
index 23e0396687e8..8a316cd76f2f 100644
--- a/contrib/plugins/Makefile
+++ b/contrib/plugins/Makefile
@@ -3,7 +3,7 @@
# This Makefile example is fairly independent from the main makefile
# so users can take and adapt it for their build. We only really
# include config-host.mak so we don't have to repeat probing for
-# cflags that the main configure has already done for us.
+# programs that the main configure has already done for us.
#
BUILD_DIR := $(CURDIR)/../..
@@ -26,7 +26,7 @@ SONAMES := $(addsuffix .so,$(addprefix lib,$(NAMES)))
# The main QEMU uses Glib extensively so it's perfectly fine to use it
# in plugins (which many example do).
-CFLAGS = $(GLIB_CFLAGS)
+CFLAGS := $(shell $(PKG_CONFIG) --cflags glib-2.0)
CFLAGS += -fPIC -Wall $(filter -W%, $(QEMU_CFLAGS))
CFLAGS += $(if $(findstring no-psabi,$(QEMU_CFLAGS)),-Wpsabi)
CFLAGS += $(if $(CONFIG_DEBUG_TCG), -ggdb -O0)
diff --git a/meson.build b/meson.build
index c4fa82ae8ba4..f63ab7f83bed 100644
--- a/meson.build
+++ b/meson.build
@@ -495,19 +495,77 @@ endif
# Dependencies #
################
-# The path to glib.h is added to all compilation commands. This was
-# grandfathered in from the QEMU Makefiles.
-add_project_arguments(config_host['GLIB_CFLAGS'].split(),
- native: false, language: all_languages)
-glib = declare_dependency(compile_args: config_host['GLIB_CFLAGS'].split(),
- link_args: config_host['GLIB_LIBS'].split(),
- version: config_host['GLIB_VERSION'],
+# When bumping glib minimum version, please check also whether to increase
+# the _WIN32_WINNT setting in osdep.h according to the value from glib
+glib_req_ver = '>=2.56.0'
+glib = dependency('glib-2.0', version: glib_req_ver, required: true,
+ method: 'pkg-config')
+glib_cflags = []
+if config_host.has_key('CONFIG_MODULES')
+ gmodule = dependency('gmodule-export-2.0', version: glib_req_ver, required:
true,
+ method: 'pkg-config')
+elif config_host.has_key('CONFIG_PLUGIN')
+ gmodule = dependency('gmodule-no-export-2.0', version: glib_req_ver,
required: true,
+ method: 'pkg-config')
+else
+ gmodule = not_found
+endif
+
+# This workaround is required due to a bug in pkg-config file for glib as it
+# doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
+if targetos == 'windows' and get_option('prefer_static')
+ glib_cflags += ['-DGLIB_STATIC_COMPILATION']
+endif
+
+# Sanity check that the current size_t matches the
+# size that glib thinks it should be. This catches
+# problems on multi-arch where people try to build
+# 32-bit QEMU while pointing at 64-bit glib headers
+
+if not cc.compiles('''
+ #include <glib.h>
+ #include <unistd.h>
+
+ #define QEMU_BUILD_BUG_ON(x) \
+ typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
+
+ int main(void) {
+ QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
+ return 0;
+ }''', dependencies: glib, args: glib_cflags)
+ error('''sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T.
+ You probably need to set PKG_CONFIG_LIBDIR" to point
+ to the right pkg-config files for your build target.''')
+endif
+
+# Silence clang warnings triggered by glib < 2.57.2
+if not cc.compiles('''
+ #include <glib.h>
+ typedef struct Foo {
+ int i;
+ } Foo;
+ static void foo_free(Foo *f)
+ {
+ g_free(f);
+ }
+ G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
+ int main(void) { return 0; }''', dependencies: glib, args: ['-Werror'])
+ glib_cflags += cc.get_supported_arguments('-Wno-unused-function')
+endif
+glib = declare_dependency(dependencies: glib,
+ compile_args: glib_cflags,
+ version: glib.version(),
variables: {
- 'bindir': config_host['GLIB_BINDIR'],
+ 'bindir': glib.get_variable('bindir')
})
-# override glib dep with the configure results (for subprojects)
+
+# override glib dep to include the above refinements
meson.override_dependency('glib-2.0', glib)
+# The path to glib.h is added to all compilation commands.
+add_project_dependencies(glib.partial_dependency(compile_args: true, includes:
true),
+ native: false, language: all_languages)
+
gio = not_found
gdbus_codegen = not_found
gdbus_codegen_error = '@0@ requires gdbus-codegen, please install libgio'
@@ -923,7 +981,7 @@ if have_system and get_option('curses').allowed()
int main(void) {
iconv_t conv = iconv_open("WCHAR_T", "UCS-2");
return conv != (iconv_t) -1;
- }''', args: config_host['GLIB_CFLAGS'].split() +
config_host['GLIB_LIBS'].split() + link_args)
+ }''', args: link_args, dependencies: glib)
iconv = declare_dependency(link_args: link_args, dependencies: glib)
break
endif
@@ -2977,7 +3035,6 @@ subdir('ui')
subdir('hw')
subdir('gdbstub')
-
if enable_modules
libmodulecommon = static_library('module-common', files('module-common.c') +
genh, pic: true, c_args: '-DBUILD_DSO')
modulecommon = declare_dependency(link_whole: libmodulecommon, compile_args:
'-DBUILD_DSO')
@@ -3590,7 +3647,7 @@ if host_machine.system() == 'windows'
'@OUTPUT@',
get_option('prefix'),
meson.current_source_dir(),
- config_host['GLIB_BINDIR'],
+ glib.get_variable('bindir'),
host_machine.cpu(),
'--',
'-DDISPLAYVERSION=' + meson.project_version(),
diff --git a/plugins/meson.build b/plugins/meson.build
index 752377c66d32..04cb7d252aab 100644
--- a/plugins/meson.build
+++ b/plugins/meson.build
@@ -17,4 +17,4 @@ specific_ss.add(when: 'CONFIG_PLUGIN', if_true: [files(
'loader.c',
'core.c',
'api.c',
-), declare_dependency(link_args: plugin_ldflags)])
+), gmodule, declare_dependency(link_args: plugin_ldflags)])
--
2.38.1
