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[Qemu-devel] [PULL v2 3/8] configure: add CONFIG_GCRYPT_HMAC item


From: Daniel P. Berrange
Subject: [Qemu-devel] [PULL v2 3/8] configure: add CONFIG_GCRYPT_HMAC item
Date: Thu, 22 Dec 2016 10:47:35 +0000

From: "Longpeng(Mike)" <address@hidden>

This item will be used for support libcrypt-backed HMAC algorithms.

Support for hmac has been added in Libgcrypt 1.6.0, but we cannot
use pkg-config to get libcrypt's version. However we can make a
in configure to know whether current libcrypt support hmac.

Signed-off-by: Longpeng(Mike) <address@hidden>
Signed-off-by: Daniel P. Berrange <address@hidden>
---
 configure | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/configure b/configure
index 3770d7c..f30aa1b 100755
--- a/configure
+++ b/configure
@@ -313,6 +313,7 @@ gnutls_rnd=""
 nettle=""
 nettle_kdf="no"
 gcrypt=""
+gcrypt_hmac="no"
 gcrypt_kdf="no"
 vte=""
 virglrenderer=""
@@ -2417,6 +2418,19 @@ EOF
         if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
             gcrypt_kdf=yes
         fi
+
+        cat > $TMPC << EOF
+#include <gcrypt.h>
+int main(void) {
+  gcry_mac_hd_t handle;
+  gcry_mac_open(&handle, GCRY_MAC_HMAC_MD5,
+                GCRY_MAC_FLAG_SECURE, NULL);
+  return 0;
+}
+EOF
+        if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
+            gcrypt_hmac=yes
+        fi
     else
         if test "$gcrypt" = "yes"; then
             feature_not_found "gcrypt" "Install gcrypt devel"
@@ -5387,6 +5401,9 @@ if test "$gnutls_rnd" = "yes" ; then
 fi
 if test "$gcrypt" = "yes" ; then
   echo "CONFIG_GCRYPT=y" >> $config_host_mak
+  if test "$gcrypt_hmac" = "yes" ; then
+    echo "CONFIG_GCRYPT_HMAC=y" >> $config_host_mak
+  fi
   if test "$gcrypt_kdf" = "yes" ; then
     echo "CONFIG_GCRYPT_KDF=y" >> $config_host_mak
   fi
-- 
2.9.3




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