[PATCH] tools: fix libgcrypt detection

[PATCH] tools: fix libgcrypt detection

[Andre Przywara]

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Hi,

if we want to check the functionality of libgcrypt, we shouldn't test a 
function only exported by openssl, but instead the one actually used in 
the code.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>

-- 
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 448 3567 12
----to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Andrew Bowd; Thomas M. McCoy; Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

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diff -r bec27eb6f72c tools/blktap2/drivers/check_gcrypt
--- a/tools/blktap2/drivers/check_gcrypt	Sat Nov 14 10:32:59 2009 +0000
+++ b/tools/blktap2/drivers/check_gcrypt	Mon Nov 16 09:30:44 2009 +0100
@@ -4,8 +4,7 @@
 #include <gcrypt.h>
 int main(void) 
 {
-    char dummy[14];
-    MD5("DUMMY", 5, dummy);
+    gcry_md_hash_buffer(GCRY_MD_MD5, NULL, NULL, 0);
     return 0; 
 }
 EOF

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