[Qemu-devel] [PULL 10/22] dump: add support for lzo/snappy

[Luiz Capitulino]

From: qiaonuohan <address@hidden>

kdump-compressed format supports three compression format, zlib/lzo/snappy.
Currently, only zlib is available. This patch is used to support lzo/snappy.
'--enable-lzo/--enable-snappy' is needed to be specified with configure to make
lzo/snappy available for qemu

Signed-off-by: Qiao Nuohan <address@hidden>
Reviewed-by: Laszlo Ersek <address@hidden>
Signed-off-by: Luiz Capitulino <address@hidden>
---
 configure | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/configure b/configure
index 88133a1..9b2dfd0 100755
--- a/configure
+++ b/configure
@@ -245,6 +245,8 @@ libusb=""
 usb_redir=""
 glx=""
 zlib="yes"
+lzo="no"
+snappy="no"
 guest_agent=""
 guest_agent_with_vss="no"
 vss_win32_sdk=""
@@ -953,6 +955,10 @@ for opt do
   ;;
   --disable-zlib-test) zlib="no"
   ;;
+  --enable-lzo) lzo="yes"
+  ;;
+  --enable-snappy) snappy="yes"
+  ;;
   --enable-guest-agent) guest_agent="yes"
   ;;
   --disable-guest-agent) guest_agent="no"
@@ -1242,6 +1248,8 @@ Advanced options (experts only):
   --enable-libusb          enable libusb (for usb passthrough)
   --disable-usb-redir      disable usb network redirection support
   --enable-usb-redir       enable usb network redirection support
+  --enable-lzo             enable the support of lzo compression library
+  --enable-snappy          enable the support of snappy compression library
   --disable-guest-agent    disable building of the QEMU Guest Agent
   --enable-guest-agent     enable building of the QEMU Guest Agent
   --with-vss-sdk=SDK-path  enable Windows VSS support in QEMU Guest Agent
@@ -1546,6 +1554,42 @@ fi
 libs_softmmu="$libs_softmmu -lz"
 
 ##########################################
+# lzo check
+
+if test "$lzo" != "no" ; then
+    cat > $TMPC << EOF
+#include <lzo/lzo1x.h>
+int main(void) { lzo_version(); return 0; }
+EOF
+    if compile_prog "" "-llzo2" ; then
+        :
+    else
+        error_exit "lzo check failed" \
+            "Make sure to have the lzo libs and headers installed."
+    fi
+
+    libs_softmmu="$libs_softmmu -llzo2"
+fi
+
+##########################################
+# snappy check
+
+if test "$snappy" != "no" ; then
+    cat > $TMPC << EOF
+#include <snappy-c.h>
+int main(void) { snappy_max_compressed_length(4096); return 0; }
+EOF
+    if compile_prog "" "-lsnappy" ; then
+        :
+    else
+        error_exit "snappy check failed" \
+            "Make sure to have the snappy libs and headers installed."
+    fi
+
+    libs_softmmu="$libs_softmmu -lsnappy"
+fi
+
+##########################################
 # libseccomp check
 
 if test "$seccomp" != "no" ; then
@@ -3865,6 +3909,8 @@ echo "libssh2 support   $libssh2"
 echo "TPM passthrough   $tpm_passthrough"
 echo "QOM debugging     $qom_cast_debug"
 echo "vhdx              $vhdx"
+echo "lzo support       $lzo"
+echo "snappy support    $snappy"
 
 if test "$sdl_too_old" = "yes"; then
 echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -4180,6 +4226,14 @@ if test "$glx" = "yes" ; then
   echo "GLX_LIBS=$glx_libs" >> $config_host_mak
 fi
 
+if test "$lzo" = "yes" ; then
+  echo "CONFIG_LZO=y" >> $config_host_mak
+fi
+
+if test "$snappy" = "yes" ; then
+  echo "CONFIG_SNAPPY=y" >> $config_host_mak
+fi
+
 if test "$libiscsi" = "yes" ; then
   echo "CONFIG_LIBISCSI=y" >> $config_host_mak
   if test "$libiscsi_version" = "1.4.0"; then
-- 
1.8.1.4