--- /dev/null
+From: Alexander Dahl <alex@netz39.de>
+Date: Wed, 28 Oct 2015 16:04:13 +0100
+Subject: [PATCH] cmake: use INTERPROCEDURAL_OPTIMIZATION target property
+
+Instead of hacking on compiler flags use the cmake way for handling
+interprocedural optimization. Tests showed cmake currently ignores this
+for gcc and clang, at least on Debian Wheezy and Jessie. This actually
+results in no interprocedural optimization for the moment. However it
+allows to compile fastd against a toolchain without LTO support, which
+was broken because of a hack included here for finding binutils.
+
+According to the upstream author of fastd the main reason for enabling
+LTO was binary size on an OpenWRT target for Freifunk Gluon, where they
+have very few space left on devices with only 4 MB flash memory.
+
+Signed-off-by: Alexander Dahl <post@lespocky.de>
+---
+ cmake/CMakeFindBinUtils.cmake | 7 -------
+ cmake/checks.cmake | 14 --------------
+ src/CMakeLists.txt | 9 +++++++++
+ 3 files changed, 9 insertions(+), 21 deletions(-)
+ delete mode 100644 cmake/CMakeFindBinUtils.cmake
+
+diff --git a/cmake/CMakeFindBinUtils.cmake b/cmake/CMakeFindBinUtils.cmake
+deleted file mode 100644
+index 753577a..0000000
+--- a/cmake/CMakeFindBinUtils.cmake
++++ /dev/null
+@@ -1,7 +0,0 @@
+-if(CMAKE_COMPILER_IS_GNUCC)
+- find_program(CMAKE_AR NAMES ${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
+- find_program(CMAKE_NM NAMES ${_CMAKE_TOOLCHAIN_PREFIX}gcc-nm HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
+- find_program(CMAKE_RANLIB NAMES ${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
+-endif(CMAKE_COMPILER_IS_GNUCC)
+-
+-include(${CMAKE_ROOT}/Modules/CMakeFindBinUtils.cmake)
+diff --git a/cmake/checks.cmake b/cmake/checks.cmake
+index f9f0399..3c1f38b 100644
+--- a/cmake/checks.cmake
++++ b/cmake/checks.cmake
+@@ -10,20 +10,6 @@ if(ARCH_X86 OR ARCH_X86_64)
+ endif(ARCH_X86 OR ARCH_X86_64)
+
+
+-
+-if(ENABLE_LTO)
+- set(CFLAGS_LTO "-flto")
+- set(CFLAGS_NO_LTO "-fno-lto")
+-
+- check_c_compiler_flag("-fwhole-program" HAVE_FLAG_WHOLE_PROGRAM)
+- if(HAVE_FLAG_WHOLE_PROGRAM)
+- set(LDFLAGS_LTO "-flto -fwhole-program")
+- else(HAVE_FLAG_WHOLE_PROGRAM)
+- set(LDFLAGS_LTO "-flto")
+- endif(HAVE_FLAG_WHOLE_PROGRAM)
+-endif(ENABLE_LTO)
+-
+-
+ check_c_source_compiles("
+ #include <sys/types.h>
+ #include <sys/socket.h>
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index e7dd5d1..4991656 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -47,6 +47,15 @@ add_executable(fastd
+ set_property(TARGET fastd PROPERTY COMPILE_FLAGS "${FASTD_CFLAGS}")
+ set_property(TARGET fastd PROPERTY LINK_FLAGS "${PTHREAD_LDFLAGS} ${UECC_LDFLAGS_OTHER} ${NACL_LDFLAGS_OTHER} ${OPENSSL_CRYPTO_LDFLAGS_OTHER} ${JSONC_LDFLAGS_OTHER} ${LDFLAGS_LTO}")
+ set_property(TARGET fastd APPEND PROPERTY INCLUDE_DIRECTORIES ${CAP_INCLUDE_DIR} ${NACL_INCLUDE_DIRS} ${JSONC_INCLUDE_DIRS})
++if(ENABLE_LTO)
++ set_target_properties(fastd PROPERTIES
++ INTERPROCEDURAL_OPTIMIZATION ON
++ )
++else(ENABLE_LTO)
++ set_target_properties(fastd PROPERTIES
++ INTERPROCEDURAL_OPTIMIZATION OFF
++ )
++endif(ENABLE_LTO)
+ target_link_libraries(fastd protocols methods ciphers macs ${RT_LIBRARY} ${CAP_LIBRARY} ${UECC_LIBRARIES} ${NACL_LIBRARIES} ${OPENSSL_CRYPTO_LIBRARIES} ${JSONC_LIBRARIES})
+
+ add_dependencies(fastd version)
+--
+2.1.4
+
--- /dev/null
+config BR2_PACKAGE_FASTD
+ bool "fastd"
+ depends on BR2_TOOLCHAIN_HAS_THREADS
+ select BR2_PACKAGE_LIBUECC
+ select BR2_PACKAGE_LIBSODIUM
+ select BR2_PACKAGE_LIBCAP
+ help
+ Fast and Secure Tunneling Daemon
+
+ https://projects.universe-factory.net/projects/fastd/wiki
+
+if BR2_PACKAGE_FASTD
+
+config BR2_PACKAGE_FASTD_STATUS_SOCKET
+ bool "status socket support"
+ default y
+ select BR2_PACKAGE_JSON_C
+ help
+ Enable support for a socket to get fastd's status.
+
+endif
+
+comment "fastd needs a toolchain w/ threads"
+ depends on !BR2_TOOLCHAIN_HAS_THREADS
--- /dev/null
+################################################################################
+#
+# fastd
+#
+################################################################################
+
+FASTD_VERSION = v17
+FASTD_SITE = git://git.universe-factory.net/fastd
+FASTD_LICENSE = BSD-2c
+FASTD_LICENSE_FILES = COPYRIGHT
+FASTD_CONF_OPTS = -DENABLE_LIBSODIUM=ON
+FASTD_DEPENDENCIES = libuecc libsodium libcap
+
+ifeq ($(BR2_PACKAGE_OPENSSL),y)
+FASTD_CONF_OPTS += -DENABLE_OPENSSL=ON
+FASTD_DEPENDENCIES += openssl
+else
+FASTD_CONF_OPTS += -DENABLE_OPENSSL=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_FASTD_STATUS_SOCKET),y)
+FASTD_CONF_OPTS += -DWITH_STATUS_SOCKET=ON
+FASTD_DEPENDENCIES += json-c
+else
+FASTD_CONF_OPTS += -DWITH_STATUS_SOCKET=OFF
+endif
+
+ifeq ($(BR2_INIT_SYSTEMD),y)
+FASTD_CONF_OPTS += -DENABLE_SYSTEMD=ON
+else
+FASTD_CONF_OPTS += -DENABLE_SYSTEMD=OFF
+endif
+
+ifeq ($(BR2_GCC_ENABLE_LTO),y)
+FASTD_CONF_OPTS += -DENABLE_LTO=ON
+else
+FASTD_CONF_OPTS += -DENABLE_LTO=OFF
+endif
+
+$(eval $(cmake-package))