Check for libgcrypt version 1.2 and later

diff --git a/configure.ac b/configure.ac
index 3b951a9..ff8b239 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -65,16 +65,28 @@ AC_ARG_WITH(libgcrypt, [  --with-libgcrypt=DIR    use libgcrypt-config in DIR],[
 if test "$libgcryptpath" != "no"; then
     if test "$libgcryptpath" = "NONE"; then
        AC_PATH_PROG([libgcrypt],[libgcrypt-config],[NONE])
-    else
+    elif test -x $libgcryptpath/libgcrypt-config; then
        libgcrypt=$libgcryptpath/libgcrypt-config
+    else
+       libgcrypt=$libgcryptpath
     fi
     AC_MSG_CHECKING([for libgcrypt])
     if "$libgcrypt" --version >/dev/null 2>&1; then
-       LIBS="$LIBS `$libgcrypt --libs`"
-       CFLAGS="$CFLAGS `$libgcrypt --cflags`"
        libgcryptversion=`$libgcrypt --version`
+       libgcryptversion2=`echo "$libgcryptversion" | awk 'BEGIN { FS = "."; } { printf "%d", [$]1 * 1000 + [$]2;}'`
        AC_MSG_RESULT([$libgcryptversion])
-       AC_DEFINE([HAVE_GCRYPT_H],[1],[Define to 1 if libgcrypt is present])
+       if test $libgcryptversion2 -ge 1002; then
+           LIBS="$LIBS `$libgcrypt --libs`"
+           CFLAGS="$CFLAGS `$libgcrypt --cflags`"
+           AC_DEFINE([HAVE_GCRYPT_H],[1],[Define to 1 if libgcrypt is present])
+       else
+           if test "$libgcryptpath" = "NONE"; then
+               AC_MSG_WARN([Only libgcrypt version 1.2 and later supported])
+           else
+               AC_MSG_ERROR([Only libgcrypt version 1.2 and later supported])
+           fi
+           libgcryptversion=""
+       fi
     else
        AC_MSG_RESULT([no])
     fi