From: Andres Mejia <amejia004@gmail.com>
Date: Sat, 2 Feb 2013 03:10:15 +0000 (-0500)
Subject: Use cmake module similar to FindLZMA.cmake to find Nettle include dir and library.
X-Git-Tag: v3.1.2~32
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5972a554b2641ab7875f91ab41aa106014bb522a;p=thirdparty%2Flibarchive.git

Use cmake module similar to FindLZMA.cmake to find Nettle include dir and library.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ac9186e99..bba08c85a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -514,16 +514,17 @@ LIBARCHIVE_CHECK_C_SOURCE_COMPILES(
 # Find Nettle
 #
 IF(ENABLE_NETTLE)
-  CHECK_LIBRARY_EXISTS(nettle "nettle_sha1_digest" "" NETTLE_FOUND)
+  FIND_PACKAGE(Nettle)
   IF(NETTLE_FOUND)
-    CMAKE_PUSH_CHECK_STATE()	# Save the state of the variables
-    SET(CMAKE_REQUIRED_LIBRARIES "nettle")
-    FIND_LIBRARY(NETTLE_LIBRARY NAMES nettle)
-    LIST(APPEND ADDITIONAL_LIBS ${NETTLE_LIBRARY})
-    CMAKE_POP_CHECK_STATE()	# Restore the state of the variables
-  ELSE(NETTLE_FOUND)
-    SET(ENABLE_NETTLE OFF)
+    SET(HAVE_LIBNETTLE 1)
+    SET(HAVE_NETTLE_MD5_H 1)
+    SET(HAVE_NETTLE_RIPEMD160_H 1)
+    SET(HAVE_NETTLE_SHA_H 1)
+    INCLUDE_DIRECTORIES(${NETTLE_INCLUDE_DIR})
+    LIST(APPEND ADDITIONAL_LIBS ${NETTLE_LIBRARIES})
   ENDIF(NETTLE_FOUND)
+  MARK_AS_ADVANCED(CLEAR NETTLE_INCLUDE_DIR)
+  MARK_AS_ADVANCED(CLEAR NETTLE_LIBRARIES)
 ENDIF(ENABLE_NETTLE)
 
 #
diff --git a/build/cmake/FindNettle.cmake b/build/cmake/FindNettle.cmake
new file mode 100644
index 000000000..54ec9f5d3
--- /dev/null
+++ b/build/cmake/FindNettle.cmake
@@ -0,0 +1,23 @@
+# - Find Nettle
+# Find the Nettle include directory and library
+#
+#  NETTLE_INCLUDE_DIR    - where to find <nettle/sha.h>, etc.
+#  NETTLE_LIBRARIES      - List of libraries when using libnettle.
+#  NETTLE_FOUND          - True if libnettle found.
+
+IF (NETTLE_INCLUDE_DIR)
+  # Already in cache, be silent
+  SET(NETTLE_FIND_QUIETLY TRUE)
+ENDIF (NETTLE_INCLUDE_DIR)
+
+FIND_PATH(NETTLE_INCLUDE_DIR nettle/md5.h nettle/ripemd160.h nettle/sha.h)
+FIND_LIBRARY(NETTLE_LIBRARY NAMES nettle libnettle)
+
+# handle the QUIETLY and REQUIRED arguments and set NETTLE_FOUND to TRUE if 
+# all listed variables are TRUE
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(NETTLE DEFAULT_MSG NETTLE_LIBRARY NETTLE_INCLUDE_DIR)
+
+IF(NETTLE_FOUND)
+  SET(NETTLE_LIBRARIES ${NETTLE_LIBRARY})
+ENDIF(NETTLE_FOUND)
diff --git a/build/cmake/config.h.in b/build/cmake/config.h.in
index 0631195d6..50faae5c1 100644
--- a/build/cmake/config.h.in
+++ b/build/cmake/config.h.in
@@ -588,6 +588,9 @@ typedef uint64_t uintmax_t;
 /* Define to 1 if you have the `lzo2' library (-llzo2). */
 #cmakedefine HAVE_LIBLZO2 1
 
+/* Define to 1 if you have the `nettle' library (-lnettle). */
+#cmakedefine HAVE_LIBNETTLE 1
+
 /* Define to 1 if you have the `pcre' library (-lpcre). */
 #cmakedefine HAVE_LIBPCRE 1
 
@@ -703,6 +706,15 @@ typedef uint64_t uintmax_t;
 /* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
 #cmakedefine HAVE_NDIR_H 1
 
+/* Define to 1 if you have the <nettle/md5.h> header file. */
+#cmakedefine HAVE_NETTLE_MD5_H 1
+
+/* Define to 1 if you have the <nettle/ripemd160.h> header file. */
+#cmakedefine HAVE_NETTLE_RIPEMD160_H 1
+
+/* Define to 1 if you have the <nettle/sha.h> header file. */
+#cmakedefine HAVE_NETTLE_SHA_H 1
+
 /* Define to 1 if you have the `nl_langinfo' function. */
 #cmakedefine HAVE_NL_LANGINFO 1