@@ -71,7 +71,8 @@ API
Usage
=====
-The QEMU binary needs to be compiled for plugin support::
+Any QEMU binary with TCG support has plugins enabled by default.
+Earlier releases needed to be explicitly enabled with::
configure --enable-plugins
@@ -429,7 +429,7 @@ libxml2="auto"
debug_mutex="no"
libpmem="auto"
default_devices="true"
-plugins="no"
+plugins="$default_feature"
fuzzing="no"
rng_none="no"
secret_keyring="$default_feature"
@@ -3085,6 +3085,73 @@ for drv in $audio_drv_list; do
esac
done
+##########################################
+# plugin linker support probe
+
+if test "$plugins" != "no"; then
+
+ #########################################
+ # See if --dynamic-list is supported by the linker
+
+ ld_dynamic_list="no"
+ if test "$static" = "no" ; then
+ cat > $TMPTXT <<EOF
+{
+ foo;
+};
+EOF
+
+ cat > $TMPC <<EOF
+#include <stdio.h>
+void foo(void);
+
+void foo(void)
+{
+ printf("foo\n");
+}
+
+int main(void)
+{
+ foo();
+ return 0;
+}
+EOF
+
+ if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then
+ ld_dynamic_list="yes"
+ fi
+ fi
+
+ #########################################
+ # See if -exported_symbols_list is supported by the linker
+
+ ld_exported_symbols_list="no"
+ if test "$static" = "no" ; then
+ cat > $TMPTXT <<EOF
+ _foo
+EOF
+
+ if compile_prog "" "-Wl,-exported_symbols_list,$TMPTXT" ; then
+ ld_exported_symbols_list="yes"
+ fi
+ fi
+
+ if test "$ld_dynamic_list" = "no" &&
+ test "$ld_exported_symbols_list" = "no" ; then
+ if test "$plugins" = "yes"; then
+ error_exit \
+ "Plugin ($plugins) support requires dynamic linking and specifying a set of symbols " \
+ "that are exported to plugins. Unfortunately your linker doesn't " \
+ "support the flag (--dynamic-list or -exported_symbols_list) used " \
+ "for this purpose. You can't build with --static."
+ else
+ plugins="no"
+ fi
+ else
+ plugins="yes"
+ fi
+fi
+
##########################################
# glib support probe
@@ -3093,7 +3160,7 @@ glib_modules=gthread-2.0
if test "$modules" = yes; then
glib_modules="$glib_modules gmodule-export-2.0"
fi
-if test "$plugins" = yes; then
+if test "$plugins" = "yes"; then
glib_modules="$glib_modules gmodule-2.0"
fi
@@ -3931,60 +3998,6 @@ if compile_prog "" "" ; then
atomic64=yes
fi
-#########################################
-# See if --dynamic-list is supported by the linker
-ld_dynamic_list="no"
-if test "$static" = "no" ; then
- cat > $TMPTXT <<EOF
-{
- foo;
-};
-EOF
-
- cat > $TMPC <<EOF
-#include <stdio.h>
-void foo(void);
-
-void foo(void)
-{
- printf("foo\n");
-}
-
-int main(void)
-{
- foo();
- return 0;
-}
-EOF
-
- if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then
- ld_dynamic_list="yes"
- fi
-fi
-
-#########################################
-# See if -exported_symbols_list is supported by the linker
-
-ld_exported_symbols_list="no"
-if test "$static" = "no" ; then
- cat > $TMPTXT <<EOF
- _foo
-EOF
-
- if compile_prog "" "-Wl,-exported_symbols_list,$TMPTXT" ; then
- ld_exported_symbols_list="yes"
- fi
-fi
-
-if test "$plugins" = "yes" &&
- test "$ld_dynamic_list" = "no" &&
- test "$ld_exported_symbols_list" = "no" ; then
- error_exit \
- "Plugin support requires dynamic linking and specifying a set of symbols " \
- "that are exported to plugins. Unfortunately your linker doesn't " \
- "support the flag (--dynamic-list or -exported_symbols_list) used " \
- "for this purpose. You can't build with --static."
-fi
########################################
# check if getauxval is available.
@@ -354,29 +354,6 @@ build-some-softmmu:
TARGETS: xtensa-softmmu arm-softmmu aarch64-softmmu alpha-softmmu
MAKE_CHECK_ARGS: check-tcg
-# Run check-tcg against linux-user (with plugins)
-# we skip sparc64-linux-user until it has been fixed somewhat
-# we skip cris-linux-user as it doesn't use the common run loop
-build-user-plugins:
- extends: .native_build_job_template
- needs:
- job: amd64-debian-user-cross-container
- variables:
- IMAGE: debian-all-test-cross
- CONFIGURE_ARGS: --disable-tools --disable-system --enable-plugins --enable-debug-tcg --target-list-exclude=sparc64-linux-user,cris-linux-user
- MAKE_CHECK_ARGS: check-tcg
- timeout: 1h 30m
-
-build-some-softmmu-plugins:
- extends: .native_build_job_template
- needs:
- job: amd64-debian-user-cross-container
- variables:
- IMAGE: debian-all-test-cross
- CONFIGURE_ARGS: --disable-tools --disable-user --enable-plugins --enable-debug-tcg
- TARGETS: xtensa-softmmu arm-softmmu aarch64-softmmu alpha-softmmu
- MAKE_CHECK_ARGS: check-tcg
-
clang-system:
extends: .native_build_job_template
needs:
Aside from a minor bloat to file size the ability to have TCG plugins has no real impact on performance unless a plugin is actively loaded. Even then the libempty.so plugin shows only a minor degradation in performance caused by the extra book keeping the TCG has to do to keep track of instructions. As it's a useful feature lets just enable it by default and reduce our testing matrix a little. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> --- v2 - properly handle plugins being "" - make the test for linker support handle default case - move linker tests to before the glib-modules test --- docs/devel/tcg-plugins.rst | 3 +- configure | 125 ++++++++++++++++++++----------------- .gitlab-ci.d/buildtest.yml | 23 ------- 3 files changed, 71 insertions(+), 80 deletions(-) -- 2.20.1