With CPU hotplug sysctls implemented on Arm it becomes useful to have a
tool for calling them. Introduce a new congifure option "hptool" to
allow building hptool separately from other migration tools, and enable
it by default.

Signed-off-by: Mykyta Poturai <mykyta_poturai@epam.com>

v1->v2:
* switch to configure from legacy config
---
 config/Tools.mk.in               |  1 +
 tools/configure                  | 30 ++++++++++++++++++++++++++++++
 tools/configure.ac               |  1 +
 tools/libs/guest/Makefile.common |  4 ++++
 tools/misc/Makefile              |  2 +-
 5 files changed, 37 insertions(+), 1 deletion(-)
 mode change 100755 => 100644 tools/configure

diff --git a/config/Tools.mk.in b/config/Tools.mk.in
index e47ac23d11..eb4855d93d 100644
--- a/config/Tools.mk.in
+++ b/config/Tools.mk.in
@@ -49,6 +49,7 @@ CONFIG_LIBNL        := @libnl@
 CONFIG_GOLANG       := @golang@
 CONFIG_PYGRUB       := @pygrub@
 CONFIG_LIBFSIMAGE   := @libfsimage@
+CONFIG_HPTOOL       := @hptool@
 
 CONFIG_SYSTEMD      := @systemd@
 XEN_SYSTEMD_DIR     := @SYSTEMD_DIR@
diff --git a/tools/configure b/tools/configure
old mode 100755
new mode 100644
index 5abd44e21e..5cf5381c0a
--- a/tools/configure
+++ b/tools/configure
@@ -728,6 +728,7 @@ LD86
 AS86
 ipxe
 LINUX_BACKEND_MODULES
+hptool
 pygrub
 golang
 seabios
@@ -834,6 +835,7 @@ enable_ovmf
 enable_seabios
 enable_golang
 enable_pygrub
+enable_hptool
 with_linux_backend_modules
 enable_ipxe
 with_system_ipxe
@@ -1519,6 +1521,7 @@ Optional Features:
   --disable-seabios       Disable SeaBIOS (default is ENABLED)
   --disable-golang        Disable Go tools (default is ENABLED)
   --disable-pygrub        Disable pygrub (default is ENABLED)
+  --disable-hptool        Disable hptool (default is ENABLED)
   --enable-ipxe           Enable in-tree IPXE, (DEFAULT is off, see also
                           --with-system-ipxe)
   --enable-rombios        Enable ROMBIOS, (DEFAULT is on if ipxe is enabled,
@@ -4807,6 +4810,33 @@ pygrub=$ax_cv_pygrub
 
 
 
+# Check whether --enable-hptool was given.
+if test ${enable_hptool+y}
+then :
+  enableval=$enable_hptool;
+fi
+
+
+if test "x$enable_hptool" = "xno"
+then :
+
+    ax_cv_hptool="n"
+
+elif test "x$enable_hptool" = "xyes"
+then :
+
+    ax_cv_hptool="y"
+
+elif test -z $ax_cv_hptool
+then :
+
+    ax_cv_hptool="y"
+
+fi
+hptool=$ax_cv_hptool
+
+
+
 
 # Check whether --with-linux-backend-modules was given.
 if test ${with_linux_backend_modules+y}
diff --git a/tools/configure.ac b/tools/configure.ac
index dada1c3b15..3a0644ef89 100644
--- a/tools/configure.ac
+++ b/tools/configure.ac
@@ -90,6 +90,7 @@ AX_ARG_DEFAULT_DISABLE([ovmf], [Enable OVMF])
 AX_ARG_DEFAULT_ENABLE([seabios], [Disable SeaBIOS])
 AX_ARG_DEFAULT_ENABLE([golang], [Disable Go tools])
 AX_ARG_DEFAULT_ENABLE([pygrub], [Disable pygrub])
+AX_ARG_DEFAULT_ENABLE([hptool], [Disable hptool])
 
 AC_ARG_WITH([linux-backend-modules],
     AS_HELP_STRING([--with-linux-backend-modules="mod1 mod2"],
diff --git a/tools/libs/guest/Makefile.common b/tools/libs/guest/Makefile.common
index a026a2f662..774b1d5392 100644
--- a/tools/libs/guest/Makefile.common
+++ b/tools/libs/guest/Makefile.common
@@ -25,6 +25,10 @@ OBJS-y       += xg_core.o
 OBJS-$(CONFIG_X86) += xg_core_x86.o
 OBJS-$(CONFIG_ARM) += xg_core_arm.o
 
+ifneq (,$(filter y,$(CONFIG_MIGRATE)$(CONFIG_HPTOOL)))
+OBJS-y += xg_offline_page.o
+endif
+
 vpath %.c ../../../xen/common/libelf
 
 LIBELF_OBJS += libelf-tools.o libelf-loader.o
diff --git a/tools/misc/Makefile b/tools/misc/Makefile
index c26e544e83..f783f16ae6 100644
--- a/tools/misc/Makefile
+++ b/tools/misc/Makefile
@@ -16,7 +16,7 @@ INSTALL_BIN                    += xencov_split
 INSTALL_BIN += $(INSTALL_BIN-y)
 
 # Everything to be installed in regular sbin/
-INSTALL_SBIN-$(CONFIG_MIGRATE) += xen-hptool
+INSTALL_SBIN-$(CONFIG_HPTOOL)  += xen-hptool
 INSTALL_SBIN-$(CONFIG_X86)     += xen-hvmcrash
 INSTALL_SBIN-$(CONFIG_X86)     += xen-hvmctx
 INSTALL_SBIN-$(CONFIG_X86)     += xen-lowmemd
-- 
2.34.1