Import gcrypt public-key cryptography and implement signature checking.

grub-core/lib/libgcrypt/cipher/Makefile.am

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+# Makefile for cipher modules
+# Copyright (C) 1998, 1999, 2000, 2001, 2002,
+#               2003, 2009 Free Software Foundation, Inc.
+#
+# This file is part of Libgcrypt.
+#
+# Libgcrypt is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# Libgcrypt is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+# Process this file with automake to produce Makefile.in
+
+EXTRA_DIST = Manifest
+
+# Need to include ../src in addition to top_srcdir because gcrypt.h is
+# a built header.
+AM_CPPFLAGS = -I../src -I$(top_srcdir)/src 
+AM_CFLAGS = $(GPG_ERROR_CFLAGS)
+
+
+noinst_LTLIBRARIES = libcipher.la
+
+GCRYPT_MODULES = @GCRYPT_CIPHERS@ @GCRYPT_PUBKEY_CIPHERS@ @GCRYPT_DIGESTS@
+
+libcipher_la_DEPENDENCIES = $(GCRYPT_MODULES)
+libcipher_la_LIBADD = $(GCRYPT_MODULES)
+
+libcipher_la_SOURCES = \
+cipher.c pubkey.c ac.c md.c \
+hmac-tests.c \
+bithelp.h  \
+primegen.c  \
+hash-common.c hash-common.h \
+rmd.h
+
+EXTRA_libcipher_la_SOURCES = \
+arcfour.c \
+blowfish.c \
+cast5.c \
+crc.c \
+des.c \
+dsa.c \
+elgamal.c \
+ecc.c \
+md4.c \
+md5.c \
+rijndael.c rijndael-tables.h \
+rmd160.c \
+rsa.c \
+seed.c \
+serpent.c \
+sha1.c \
+sha256.c \
+sha512.c \
+tiger.c \
+whirlpool.c \
+twofish.c \
+rfc2268.c \
+camellia.c camellia.h camellia-glue.c
+
+if ENABLE_O_FLAG_MUNGING
+o_flag_munging = sed -e 's/-O[2-9s]*/-O1/g'
+else
+o_flag_munging = cat
+endif
+
+
+# We need to lower the optimization for this module.
+tiger.o: $(srcdir)/tiger.c
+	`echo $(COMPILE) -c $(srcdir)/tiger.c | $(o_flag_munging) `
+
+tiger.lo: $(srcdir)/tiger.c
+	`echo $(LTCOMPILE) -c $(srcdir)/tiger.c | $(o_flag_munging) `