AC_LIB_*CRYPT*: renamed to ax_lib_*crypt*

Renamed the recently submitted AC_LIB_*CRYPT* macro to use an AX_LIB
prefix. Also, the AX_LIB_CRYPTO macro will now find the IDEA algorithm.

1 files changed, 86 insertions, 0 deletions

diff --git a/m4/ax_lib_crypto.m4 b/m4/ax_lib_crypto.m4
new file mode 100644
index 0000000..3fc0532
--- /dev/null
+++ b/m4/ax_lib_crypto.m4
@@ -0,0 +1,86 @@
+# ===========================================================================
+#             http://autoconf-archive.cryp.to/ax_lib_crypto.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_LIB_CRYPTO([yes|no|auto])
+#
+# DESCRIPTION
+#
+#   Searches for the 'crypto' library with the --with... option.
+#
+#   If found, define HAVE_CRYPTO and macro CRYPTO_LIBS. Also defines
+#   CRYPTO_WITH_<algo> for the algorithms found available. Possible
+#   algorithms: AES BF CAMELLIA CAST DES IDEA RC2 RC5 MD2 MD4 MD5 SHA RIPEMD
+#   RSA DSA DH
+#
+#   The argument is used if no --with...-crypto option is set. Value "yes"
+#   requires the configuration by default. Value "no" does not require it by
+#   default. Value "auto" configures the library only if available.
+#
+#   See also AX_LIB_BEECRYPT and AX_LIB_GCRYPT.
+#
+# LAST MODIFICATION
+#
+#   2008-08-07
+#
+# COPYLEFT
+#
+#   Copyright (c) 2008 Fabien Coelho <autoconf.archive@coelho.net>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.
+
+# AX_CHECK_CRYPTO_LIB([algo-name],[function])
+AC_DEFUN([AX_CHECK_CRYPTO_LIB],[
+  AC_CHECK_LIB([crypto], $2, [
+    AC_DEFINE([CRYPTO_WITH_$1],[1],[Algorithm $1 in openssl crypto library])
+  ])
+])
+
+# AX_LIB_CRYPTO([yes|no|auto])
+AC_DEFUN([AX_LIB_CRYPTO],[
+  AC_MSG_CHECKING([whether openssl crypto is enabled])
+  AC_ARG_WITH([crypto],[  --with-crypto           requite crypto library
+  --without-crypto        disable crypto library],[
+    AC_MSG_RESULT([$withval])
+    ac_with_crypto=$withval
+  ],[
+    AC_MSG_RESULT([$1])
+    ac_with_crypto=$1
+  ])
+  if test "$ac_with_crypto" = "yes" -o "$ac_with_crypto" = "auto" ; then
+    AC_CHECK_HEADERS([openssl/opensslconf.h],[
+      AC_CHECK_LIB([crypto], [CRYPTO_lock],[
+        AC_DEFINE([HAVE_CRYPTO],[1],[Openssl crypto library is available])
+	HAVE_CRYPTO=1
+	AC_SUBST([CRYPTO_LIBS],[-lcrypto])
+	# ciphers
+        AX_CHECK_CRYPTO_LIB([AES],[AES_ecb_encrypt])
+        AX_CHECK_CRYPTO_LIB([BF],[BF_ecb_encrypt])
+        AX_CHECK_CRYPTO_LIB([CAST],[CAST_ecb_encrypt])
+        AX_CHECK_CRYPTO_LIB([CAMELLIA],[Camellia_ecb_encrypt])
+        AX_CHECK_CRYPTO_LIB([DES],[DES_ecb_encrypt])
+        AX_CHECK_CRYPTO_LIB([IDEA],[idea_ecb_encrypt])
+        AX_CHECK_CRYPTO_LIB([RC2],[RC2_ecb_encrypt])
+        AX_CHECK_CRYPTO_LIB([RC5],[RC5_32_ecb_encrypt])
+	# digests
+        AX_CHECK_CRYPTO_LIB([MD2],[MD2])
+        AX_CHECK_CRYPTO_LIB([MD4],[MD4])
+        AX_CHECK_CRYPTO_LIB([MD5],[MD5])
+        AX_CHECK_CRYPTO_LIB([RIPEMD],[RIPEMD160])
+        AX_CHECK_CRYPTO_LIB([SHA],[SHA1])
+	# others
+	AX_CHECK_CRYPTO_LIB([RSA],[RSA_set_method])
+	AX_CHECK_CRYPTO_LIB([DSA],[DSA_set_method])
+	AX_CHECK_CRYPTO_LIB([DH],[DH_set_method])
+      ])
+    ])
+    # complain only if crypto as *explicitely* required
+    if test "$ac_with_crypto" = "yes" -a "x$HAVE_CRYPTO" = "x" ; then
+      AC_MSG_ERROR([cannot configure required openssl crypto library])
+    fi
+  fi
+])