[Qemu-devel] [RFC PATCH v5 5/6] configure: introduce --enable-modules

[Fam Zheng <famz@redhat.com>]

The new option will enable support of shared object build. Otherwise
objects are static linked to executables.

Signed-off-by: Fam Zheng <famz@redhat.com>
---
 Makefile.target | 6 +++++-
 configure       | 8 ++++++++
 rules.mak       | 8 ++++++--
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/Makefile.target b/Makefile.target
index 1d92523..beab0f9 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -152,7 +152,11 @@ obj-y-save := $(obj-y)
 block-obj-y :=
 common-obj-y :=
 include $(SRC_PATH)/Makefile.objs
-dummy := $(call unnest-vars,..,block-obj-y common-obj-y)
+dummy := $(call unnest-vars,.., \
+               block-obj-y \
+               block-obj-m \
+               common-obj-y \
+               common-obj-m)
 
 # Now restore obj-y
 obj-y := $(obj-y-save)
diff --git a/configure b/configure
index a2858c2..f1d7fa7 100755
--- a/configure
+++ b/configure
@@ -192,6 +192,7 @@ gcov_tool="gcov"
 EXESUF=""
 DSOSUF=".so"
 LDFLAGS_SHARED="-shared"
+modules="no"
 prefix="/usr/local"
 mandir="\${prefix}/share/man"
 datadir="\${prefix}/share"
@@ -650,6 +651,8 @@ for opt do
   ;;
   --disable-debug-info)
   ;;
+  --enable-modules) modules="yes"
+  ;;
   --cpu=*)
   ;;
   --target-list=*) target_list="$optarg"
@@ -1052,6 +1055,7 @@ echo "  --libdir=PATH            install libraries in PATH"
 echo "  --sysconfdir=PATH        install config in PATH$confsuffix"
 echo "  --localstatedir=PATH     install local state in PATH (set at runtime on win32)"
 echo "  --with-confsuffix=SUFFIX suffix for QEMU data inside datadir and sysconfdir [$confsuffix]"
+echo "  --enable-modules         enable modules support"
 echo "  --enable-debug-tcg       enable TCG debugging"
 echo "  --disable-debug-tcg      disable TCG debugging (default)"
 echo "  --enable-debug-info       enable debugging information (default)"
@@ -3580,6 +3584,7 @@ echo "python            $python"
 if test "$slirp" = "yes" ; then
     echo "smbd              $smbd"
 fi
+echo "module support    $modules"
 echo "host CPU          $cpu"
 echo "host big endian   $bigendian"
 echo "target list       $target_list"
@@ -3697,6 +3702,9 @@ echo "libs_softmmu=$libs_softmmu" >> $config_host_mak
 
 echo "ARCH=$ARCH" >> $config_host_mak
 
+if test "$modules" = "yes"; then
+  echo "CONFIG_MODULES=y" >> $config_host_mak
+fi
 case "$cpu" in
   arm|i386|x86_64|x32|ppc|aarch64)
     # The TCG interpreter currently does not support ld/st optimization.
diff --git a/rules.mak b/rules.mak
index ea97888..860b8ac 100644
--- a/rules.mak
+++ b/rules.mak
@@ -185,7 +185,11 @@ $(foreach var,$(nested-vars), $(eval \
 $(foreach v,$(filter %-m,$(nested-vars)), \
     $(call add-modules,$v))
 
-$(eval modules: $(patsubst %.mo,%$(DSOSUF),$(modules-m)))
-$(eval all: modules)
+$(if $(CONFIG_MODULES), \
+    $(eval modules: $(patsubst %.mo,%$(DSOSUF),$(modules-m))) \
+    $(eval all: modules), \
+    $(foreach v,$(filter %-m,$(nested-vars)), \
+        $(eval $(patsubst %-m,%-y,$v) += $($v)) \
+        $(eval $v := )))
 
 endef
-- 
1.8.3.1