swtpm: enable native and nativesdk flavors

For use with qemu-tpm as described in the swtpm main README, swtpm
must be compiled natively. nativesdk is added just in case that
someone wants to add this to an SDK.

The fix_lib_search_path.patch was recently removed during the version
update, but it is still needed when building natively. Here's a
version that applies cleanly again.

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

recipes-tpm/swtpm/files/fix_lib_search_path.patch

@@ -0,0 +1,64 @@
+From 85706ceb6877ade3b589d3c390abf5b3492bb718 Mon Sep 17 00:00:00 2001
+From: Armin Kuster <akuster808@gmail.com>
+Date: Thu, 13 Oct 2016 02:03:56 -0700
+Subject: [PATCH] swtpm: add new package
+
+Upstream-Status: Inappropriate [OE config]
+
+Signed-off-by: Armin Kuster <akuster808@gmail.com>
+
+Rebased to current tip.
+
+Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
+
+---
+ configure.ac | 32 ++++++++++----------------------
+ 1 file changed, 10 insertions(+), 22 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index c4a9c6d..6267f64 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -395,29 +395,17 @@ CFLAGS="$CFLAGS -Wformat -Wformat-security"
+ dnl We have to make sure libtpms is using the same crypto library
+ dnl to avoid problems
+ AC_MSG_CHECKING([the crypto library libtpms is using])
+-dirs=$($CC $CFLAGS -Xlinker --verbose 2>/dev/null | \
+-       sed -n '/SEARCH_DIR/p' | \
+-       sed 's/SEARCH_DIR("=\?\(@<:@^"@:>@\+\)"); */\1\n/g')
+-for dir in $dirs $LIBRARY_PATH; do
+-  if test -r $dir/libtpms.so; then
+-    if test -n "`ldd $dir/libtpms.so | grep libcrypto.so`"; then
+-      libtpms_cryptolib="openssl"
+-      break
+-    fi
+-    if test -n "`ldd $dir/libtpms.so | grep libnss3.so`"; then
+-      libtpms_cryptolib="freebl"
+-      break
+-    fi
++dir="$SEARCH_DIR"
++if test -r $dir/libtpms.so; then
++  if test -n "`ldd $dir/libtpms.so | grep libcrypto.so`"; then
++    libtpms_cryptolib="openssl"
++    break
+   fi
+-  case $host_os in
+-  cygwin)
+-    if test -r $dir/libtpms.a; then
+-      if test -n "$(nm $dir/libtpms.a | grep "U AES_encrypt")"; then
+-        libtpms_cryptolib="openssl"
+-      fi
+-    fi
+-  esac
+-done
++  if test -n "`ldd $dir/libtpms.so | grep libnss3.so`"; then
++    libtpms_cryptolib="freebl"
++    break
++  fi
++fi
+ 
+ if test -z "$libtpms_cryptolib"; then
+   AC_MSG_ERROR([Could not determine libtpms crypto library.])
+-- 
+2.1.4
+

recipes-tpm/swtpm/swtpm_1.0.bb

@@ -9,6 +9,7 @@ SRCREV = "ca906a02124d0ed8b6194e845d272d23ee394a34"
 SRC_URI = " \
 	git://github.com/stefanberger/swtpm.git \
 	file://fix_signed_issue.patch \
+	file://fix_lib_search_path.patch \
 	"
 
 S = "${WORKDIR}/git"
@@ -45,3 +46,5 @@ USERADD_PARAM_${PN} = "--system -g ${TSS_GROUP} --home-dir  \
     --no-create-home  --shell /bin/false ${BPN}"
 
 RDEPENDS_${PN} = "libtpm expect socat bash"
+
+BBCLASSEXTEND = "native nativesdk"