Fix for el7

Lower-libgcrypt-to-1.5.3.patch

@@ -0,0 +1,44 @@
+From fefc0d51b9d3ec6046a73cf317b31870048d1fc2 Mon Sep 17 00:00:00 2001
+From: Nicolas Chauvet <kwizart@gmail.com>
+Date: Mon, 6 Apr 2020 09:08:08 +0200
+Subject: [PATCH] Lower libgcrypt to 1.5.3
+
+Signed-off-by: Nicolas Chauvet <kwizart@gmail.com>
+---
+ configure.ac | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index 1dfe2fce9b..cdac533e10 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -4038,14 +4038,14 @@ AC_ARG_ENABLE(libgcrypt,
+ AC_ARG_VAR([GCRYPT_CFLAGS], [C compiler flags for gcrypt])
+ AC_ARG_VAR([GCRYPT_LIBS], [linker flags flags for gcrypt])
+ 
+-# require libgcrypt >= 1.6.0
++# require libgcrypt >= 1.5.3
+ AS_IF([test "${enable_libgcrypt}" != "no"], [
+-  AC_CACHE_CHECK([for gcrypt 1.6.0 or later], [ac_cv_lib_gcrypt], [
++  AC_CACHE_CHECK([for gcrypt 1.5.3 or later], [ac_cv_lib_gcrypt], [
+     VLC_SAVE_FLAGS
+     CFLAGS="${CFLAGS} ${GCRYPT_CFLAGS}"
+     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
+ [#include <gcrypt.h>
+-#if GCRYPT_VERSION_NUMBER < 0x010600
++#if GCRYPT_VERSION_NUMBER < 0x010503
+ #error
+ #endif]])], [
+       ac_cv_lib_gcrypt=yes
+@@ -4059,7 +4059,7 @@ AS_IF([test "${enable_libgcrypt}" != "no"], [
+     AC_DEFINE([HAVE_GCRYPT], 1, [Defined if having gcrypt])
+   ], [
+     AS_IF([test "${enable_libgcrypt}" = "yes"], [
+-      AC_MSG_ERROR([libgcrypt version 1.6.0 or higher not found. Install libgcrypt or pass --disable-libgcrypt.])
++      AC_MSG_ERROR([libgcrypt version 1.5.3 or higher not found. Install libgcrypt or pass --disable-libgcrypt.])
+     ])
+   ])
+ ])
+-- 
+2.25.1
+