From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 Makefile        |  8 +-------
 Makefile.target |  6 ------
 meson.build     | 22 ++++++++++++++++++++++
 scripts/hxtool  |  2 +-
 4 files changed, 24 insertions(+), 14 deletions(-)
 mode change 100644 => 100755 scripts/hxtool

diff --git a/Makefile b/Makefile
index f7af925..b9260a1 100644
--- a/Makefile
+++ b/Makefile
@@ -105,7 +105,7 @@ include $(SRC_PATH)/rules.mak
 # lor is defined in rules.mak
 CONFIG_BLOCK := $(call lor,$(CONFIG_SOFTMMU),$(CONFIG_TOOLS))
 
-generated-files-y = config-host.h qemu-options.def
+generated-files-y = config-host.h
 
 generated-files-y += module_block.h
 
@@ -247,8 +247,6 @@ all: $(DOCS) $(if $(BUILD_DOCS),sphinxdocs) $(TOOLS) $(HELPERS-y) recurse-all mo
 
 config-host.h: config-host.h-timestamp
 config-host.h-timestamp: config-host.mak
-qemu-options.def: $(SRC_PATH)/qemu-options.hx $(SRC_PATH)/scripts/hxtool
-	$(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@,"GEN","$@")
 
 TARGET_DIRS_RULES := $(foreach t, all fuzz clean install, $(addsuffix /$(t), $(TARGET_DIRS)))
 
@@ -355,9 +353,6 @@ ifdef CONFIG_MPATH
 scsi/qemu-pr-helper$(EXESUF): LIBS += -ludev -lmultipath -lmpathpersist
 endif
 
-qemu-img-cmds.h: $(SRC_PATH)/qemu-img-cmds.hx $(SRC_PATH)/scripts/hxtool
-	$(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@,"GEN","$@")
-
 module_block.h: $(SRC_PATH)/scripts/modules/module_block.py config-host.mak
 	$(call quiet-command,$(PYTHON) $< $@ \
 	$(addprefix $(SRC_PATH)/,$(patsubst %.mo,%.c,$(block-obj-m))), \
@@ -375,7 +370,6 @@ clean: recurse-clean
 	rm -f $(edk2-decompressed)
 	rm -f $(filter-out %.tlb,$(TOOLS)) $(HELPERS-y) TAGS cscope.* *.pod *~ */*~
 	rm -f fsdev/*.pod scsi/*.pod
-	rm -f qemu-img-cmds.h
 	rm -f $(foreach f,$(generated-files-y),$(f) $(f)-timestamp)
 	rm -f config-all-devices.mak
 	rm -f $(SUBDIR_DEVICES_MAK)
diff --git a/Makefile.target b/Makefile.target
index 0b32364..257afc2 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -225,12 +225,6 @@ endif
 gdbstub-xml.c: $(TARGET_XML_FILES) $(SRC_PATH)/scripts/feature_to_c.sh
 	$(call quiet-command,rm -f $@ && $(SHELL) $(SRC_PATH)/scripts/feature_to_c.sh $@ $(TARGET_XML_FILES),"GEN","$(TARGET_DIR)$@")
 
-hmp-commands.h: $(SRC_PATH)/hmp-commands.hx $(SRC_PATH)/scripts/hxtool
-	$(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@,"GEN","$(TARGET_DIR)$@")
-
-hmp-commands-info.h: $(SRC_PATH)/hmp-commands-info.hx $(SRC_PATH)/scripts/hxtool
-	$(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@,"GEN","$(TARGET_DIR)$@")
-
 clean: clean-target
 	rm -f *.a *~ $(PROGS)
 	rm -f $(shell find . -name '*.[od]')
diff --git a/meson.build b/meson.build
index e007c98..0c4988a 100644
--- a/meson.build
+++ b/meson.build
@@ -138,6 +138,7 @@ have_block = have_system or have_tools
 # Generators
 
 genh = []
+hxtool = find_program('scripts/hxtool')
 shaderinclude = find_program('scripts/shaderinclude.pl')
 qapi_gen = find_program('scripts/qapi-gen.py')
 qapi_gen_depends = [ meson.source_root() / 'scripts/qapi/__init__.py',
@@ -175,6 +176,27 @@ qemu_version = custom_target('qemu-version.h',
                              build_always_stale: true)
 genh += qemu_version
 
+hxdep = []
+hx_headers = [
+  ['qemu-options.hx', 'qemu-options.def'],
+  ['qemu-img-cmds.hx', 'qemu-img-cmds.h'],
+]
+if have_system
+  hx_headers += [
+    ['hmp-commands.hx', 'hmp-commands.h'],
+    ['hmp-commands-info.hx', 'hmp-commands-info.h'],
+  ]
+endif
+foreach d : hx_headers
+  custom_target(d[1],
+                input: files(d[0]),
+                output: d[1],
+                capture: true,
+                build_by_default: true, # to be removed when added to a target
+                command: [hxtool, '-h', '@INPUT0@'])
+endforeach
+genh += hxdep
+
 # Collect sourcesets.
 
 util_ss = ss.source_set()
diff --git a/scripts/hxtool b/scripts/hxtool
old mode 100644
new mode 100755
index 7b1452f..80516b9
--- a/scripts/hxtool
+++ b/scripts/hxtool
@@ -19,6 +19,6 @@ hxtoh()
 case "$1" in
 "-h") hxtoh ;;
 *) exit 1 ;;
-esac
+esac < "$2"
 
 exit 0
-- 
1.8.3.1