| # |
| # Copyright (c) 2015-2017 Nest Labs, Inc. |
| # All rights reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| # |
| # Description: |
| # This file defines a GNU autoconf M4-style macro for the presence |
| # of the LwIP package. |
| # |
| |
| # |
| # NL_WITH_LWIP(LWIP_ENABLED) |
| # |
| # ---------------------------------------------------------------------------- |
| AC_DEFUN([NL_WITH_LWIP], |
| [ |
| # If LwIP support is enabled... |
| if test "$1" = 1; then |
| |
| # Influential external variables for the package support |
| |
| AC_ARG_VAR(LWIP_CPPFLAGS, [LwIP C preprocessor flags]) |
| AC_ARG_VAR(LWIP_LDFLAGS, [LwIP linker flags]) |
| AC_ARG_VAR(LWIP_LIBS, [LwIP linker libraries]) |
| |
| # Allow the user to specify both external headers and libraries |
| # together (or internal). |
| |
| AC_ARG_WITH(lwip, |
| AS_HELP_STRING([--with-lwip=DIR], |
| [Specify location of the LwIP headers and libraries, or "internal" to build using Weave's internal copy of LwIP @<:@default=internal@:>@.]), |
| [ |
| if test "${withval}" = "no"; then |
| AC_MSG_ERROR([${PACKAGE_NAME} requires the LwIP package]) |
| elif test "${withval}" = "internal"; then |
| lwip_dir=${withval} |
| nl_with_lwip=${withval} |
| else |
| lwip_dir=${withval} |
| nl_with_lwip=external |
| fi |
| ], |
| [lwip_dir=; nl_with_lwip=internal]) |
| |
| # Allow users to specify external headers and libraries independently. |
| |
| AC_ARG_WITH(lwip-includes, |
| AS_HELP_STRING([--with-lwip-includes=DIR], |
| [Specify location of LwIP headers @<:@default=internal@:>@.]), |
| [ |
| if test "${withval}" = "no"; then |
| AC_MSG_ERROR([${PACKAGE_NAME} requires the LwIP package]) |
| fi |
| |
| if test "x${lwip_dir}" != "x"; then |
| AC_MSG_WARN([overriding --with-lwip=${lwip_dir}]) |
| fi |
| |
| if test "${withval}" = "internal"; then |
| lwip_header_dir=${withval} |
| nl_with_lwip=${withval} |
| else |
| lwip_header_dir=${withval} |
| nl_with_lwip=external |
| fi |
| ], |
| [ |
| lwip_header_dir=; |
| if test "x${nl_with_lwip}" = "x"; then |
| nl_with_lwip=internal |
| fi |
| ]) |
| |
| AC_ARG_WITH(lwip-libs, |
| AS_HELP_STRING([--with-lwip-libs=DIR], |
| [Specify location of LwIP libraries @<:@default=internal@:>@.]), |
| [ |
| if test "${withval}" = "no"; then |
| AC_MSG_ERROR([${PACKAGE_NAME} requires the LwIP package]) |
| fi |
| |
| if test "x${lwip_dir}" != "x"; then |
| AC_MSG_WARN([overriding --with-lwip=${lwip_dir}]) |
| fi |
| |
| if test "${withval}" = "internal"; then |
| lwip_library_dir=${withval} |
| nl_with_lwip=${withval} |
| else |
| lwip_library_dir=${withval} |
| nl_with_lwip=external |
| fi |
| ], |
| [ |
| lwip_library_dir=; |
| if test "x${nl_with_lwip}" = "x"; then |
| nl_with_lwip=internal |
| fi |
| ]) |
| |
| AC_ARG_WITH(lwip-target, |
| AS_HELP_STRING([--with-lwip-target=target], |
| [Specify the target environment for which LwIP will be built. Choose one of: standalone, nrf5, efr32, none @<:@default=standalone@:>@.]), |
| [ |
| if test "${nl_with_lwip}" != "internal"; then |
| AC_MSG_ERROR([--with-lwip-target can only be used when --with-lwip=internal is selected]) |
| else |
| case "${withval}" in |
| standalone|nrf5|efr32|none) |
| nl_with_lwip_target=${withval} |
| ;; |
| *) |
| AC_MSG_ERROR([Invalid value ${withval} for --with-lwip-target]) |
| ;; |
| esac |
| fi |
| ], |
| [ |
| nl_with_lwip_target=standalone |
| ]) |
| |
| AC_MSG_CHECKING([source of the LwIP package]) |
| AC_MSG_RESULT([${nl_with_lwip}]) |
| |
| # If the user has selected or has defaulted into the internal LwIP |
| # package, set the values appropriately. Otherwise, run through the |
| # usual routine. |
| |
| if test "${nl_with_lwip}" = "internal"; then |
| |
| LWIP_CPPFLAGS="-I${ac_abs_confdir}/third_party/lwip/repo/lwip/src/include -I${ac_abs_confdir}/third_party/lwip/repo/lwip/src/include/ipv4 -I${ac_abs_confdir}/third_party/lwip/repo/lwip/src/include/ipv6 -I${ac_abs_confdir}/src/lwip" |
| LWIP_LDFLAGS="-L${ac_pwd}/src/lwip" |
| LWIP_LIBS="-llwip" |
| |
| # On Darwin, "common" symbols are not added to the table of contents |
| # by ranlib and so can cause link time errors. This option |
| # offers a workaround. |
| case "${target_os}" in |
| *darwin*) |
| LWIP_CPPFLAGS="${LWIP_CPPFLAGS} -fno-common" |
| ;; |
| esac |
| |
| # The LwIP source code depends on a set of environment-specific headers and source |
| # files to configure it for use on a particular target platform. When an external |
| # LwIP implementation is chosen, the user is expected to pass the appropriate |
| # CPPFLAGS/LDFLAGS/LIBS values to configure to allow the build to find these files. |
| # |
| # When the "internal" LwIP package is selected, the user can use the --with-lwip-target |
| # option to chose among a set of pre-configured files for specific target platforms. |
| # The platform-specific files are located within subdirectories of src/lwip that are |
| # named after the platform. |
| # |
| # The default choice for --with-lwip-target is "standalone", which adapts LwIP for |
| # use on a desktop linux system. This is typically used for testing purposes. |
| # |
| # The target "none" directs the build to not include any environment-specific files. |
| # This allows the user to build with the internal LwIP sources but supplied their |
| # own environment-specific files using CPP/CFLAGS/LDFLAGS values. |
| |
| case "${nl_with_lwip_target}" in |
| standalone) |
| LWIP_CPPFLAGS="${LWIP_CPPFLAGS} -I${ac_abs_confdir}/src/lwip/standalone" |
| LWIP_LIBS="${LWIP_LIBS} -lpthread" |
| ;; |
| nrf5) |
| LWIP_CPPFLAGS="${LWIP_CPPFLAGS} -I${ac_abs_confdir}/src/lwip/nrf5 -I${ac_abs_confdir}/src/lwip/freertos" |
| ;; |
| efr32) |
| LWIP_CPPFLAGS="${LWIP_CPPFLAGS} -I${ac_abs_confdir}/src/lwip/efr32 -I${ac_abs_confdir}/src/lwip/freertos" |
| ;; |
| *) |
| ;; |
| esac |
| |
| AC_MSG_CHECKING([LwIP target environment]) |
| AC_MSG_RESULT([${nl_with_lwip_target}]) |
| |
| else |
| # We always prefer checking the values of the various '--with-lwip-...' |
| # options first to using pkg-config because the former might be used |
| # in a cross-compilation environment on a system that also contains |
| # pkg-config. In such a case, the user wants what he/she specified |
| # rather than what pkg-config indicates. |
| |
| if test "x${lwip_dir}" != "x" -o "x${lwip_header_dir}" != "x" -o "x${lwip_library_dir}" != "x"; then |
| if test "x${lwip_dir}" != "x"; then |
| if test -d "${lwip_dir}"; then |
| if test -d "${lwip_dir}/include"; then |
| LWIP_CPPFLAGS="-I${lwip_dir}/include -I${lwip_dir}/include/ipv4 -I${lwip_dir}/include/ipv6" |
| else |
| LWIP_CPPFLAGS="-I${lwip_dir} -I${lwip_dir}/ipv4 -I${lwip_dir}/ipv6" |
| fi |
| |
| if test -d "${lwip_dir}/lib"; then |
| LWIP_LDFLAGS="-L${lwip_dir}/lib" |
| else |
| LWIP_LDFLAGS="-L${lwip_dir}" |
| fi |
| else |
| AC_MSG_ERROR([No such directory ${lwip_dir}]) |
| fi |
| fi |
| |
| if test "x${lwip_header_dir}" != "x"; then |
| if test -d "${lwip_header_dir}"; then |
| LWIP_CPPFLAGS="-I${lwip_header_dir} -I${lwip_header_dir}/ipv4 -I${lwip_header_dir}/ipv6" |
| else |
| AC_MSG_ERROR([No such directory ${lwip_header_dir}]) |
| fi |
| fi |
| |
| if test "x${lwip_library_dir}" != "x"; then |
| if test -d "${lwip_library_dir}"; then |
| LWIP_LDFLAGS="-L${lwip_library_dir}" |
| else |
| AC_MSG_ERROR([No such directory ${lwip_library_dir}]) |
| fi |
| fi |
| |
| LWIP_LIBS="${LWIP_LDFLAGS} -llwip" |
| |
| elif test "x${PKG_CONFIG}" != "x" -a "${PKG_CONFIG} --exists lwip"; then |
| LWIP_CPPFLAGS="`${PKG_CONFIG} --cflags lwip`" |
| LWIP_LDFLAGS="`${PKG_CONFIG} --libs-only-L lwip`" |
| LWIP_LIBS="`${PKG_CONFIG} --libs-only-l lwip`" |
| |
| else |
| AC_MSG_ERROR([Cannot find the LwIP package.]) |
| fi |
| fi |
| |
| AC_SUBST(LWIP_CPPFLAGS) |
| AC_SUBST(LWIP_LDFLAGS) |
| AC_SUBST(LWIP_LIBS) |
| |
| |
| nl_saved_CPPFLAGS="${CPPFLAGS}" |
| nl_saved_LDFLAGS="${LDFLAGS}" |
| nl_saved_LIBS="${LIBS}" |
| |
| CPPFLAGS="${CPPFLAGS} ${LWIP_CPPFLAGS}" |
| LDFLAGS="${LDFLAGS} ${LWIP_LDFLAGS}" |
| LIBS="${LIBS} ${LWIP_LIBS}" |
| |
| # LwIP does a miserable job of making its headers work |
| # standalone. Check the two below, standalone, then check the |
| # rest. |
| |
| AC_CHECK_HEADERS([lwip/debug.h] [lwip/err.h], |
| [], |
| [ |
| AC_MSG_ERROR(The LwIP header "$ac_header" is required but cannot be found.) |
| ]) |
| |
| AC_CHECK_HEADERS([lwip/dns.h] [lwip/ethip6.h] [lwip/init.h] [lwip/ip_addr.h] [lwip/ip.h] [lwip/mem.h] [lwip/netif.h] [lwip/opt.h] [lwip/pbuf.h] [lwip/raw.h] [lwip/snmp.h] [lwip/stats.h] [lwip/sys.h] [lwip/tcp.h] [lwip/tcpip.h] [lwip/udp.h], |
| [], |
| [ |
| AC_MSG_ERROR(The LwIP header "$ac_header" is required but cannot be found.) |
| ], |
| [#include <lwip/err.h> |
| #include <lwip/ip4_addr.h> |
| ]) |
| |
| if test "${ac_no_link}" != "yes"; then |
| # If we are building against LwIP, check whether or not the |
| # version of LwIP has the new, standard {raw,udp}_bind_netif APIs |
| # that can be used rather than the bespoke Weave-specific LwIP |
| # intf_filter PCB fields. |
| # |
| # Assert -Werror=implicit-function-declaration to ensure we do not |
| # get a false positive due to C's usually optimistic and loose |
| # "we'll figure it out at link time" approach to symbols. |
| |
| nl_with_lwip_saved_CPPFLAGS="${CPPFLAGS}" |
| |
| CPPFLAGS="${CPPFLAGS} -Werror=implicit-function-declaration" |
| |
| AC_MSG_CHECKING([whether LwIP has raw_bind_netif()]) |
| AC_TRY_COMPILE([#include <lwip/init.h> |
| #include <lwip/netif.h> |
| #include <lwip/raw.h> |
| ],[struct raw_pcb *pcb = NULL; |
| const struct netif *netif = NULL; |
| raw_bind_netif(pcb, netif);],[ |
| AC_MSG_RESULT([yes]) |
| AC_DEFINE(HAVE_LWIP_RAW_BIND_NETIF, 1, [Define to 1 if LwIP has the raw_bind_netif() interface])],[ |
| AC_MSG_RESULT([no])]) |
| |
| AC_MSG_CHECKING([whether LwIP has udp_bind_netif()]) |
| AC_TRY_COMPILE([#include <lwip/init.h> |
| #include <lwip/netif.h> |
| #include <lwip/udp.h> |
| ],[struct udp_pcb *pcb = NULL; |
| const struct netif *netif = NULL; |
| udp_bind_netif(pcb, netif);],[ |
| AC_MSG_RESULT([yes]) |
| AC_DEFINE(HAVE_LWIP_UDP_BIND_NETIF, 1, [Define to 1 if LwIP has the udp_bind_netif() interface])],[ |
| AC_MSG_RESULT([no])]) |
| |
| CPPFLAGS="${nl_with_lwip_saved_CPPFLAGS}" |
| fi |
| |
| CPPFLAGS="${nl_saved_CPPFLAGS}" |
| LDFLAGS="${nl_saved_LDFLAGS}" |
| LIBS="${nl_saved_LIBS}" |
| |
| fi |
| |
| # Define automake conditionals for building Weave with LwIP |
| AM_CONDITIONAL([WEAVE_WITH_LWIP], [test "${1}" == 1]) |
| AM_CONDITIONAL([WEAVE_WITH_LWIP_INTERNAL], [test "${nl_with_lwip}" = "internal"]) |
| AM_CONDITIONAL([WEAVE_LWIP_TARGET_STANDALONE], [test "${nl_with_lwip}" = "internal" -a "${nl_with_lwip_target}" = "standalone" ]) |
| AM_CONDITIONAL([WEAVE_LWIP_TARGET_NRF5], [test "${nl_with_lwip}" = "internal" -a "${nl_with_lwip_target}" = "nrf5" ]) |
| AM_CONDITIONAL([WEAVE_LWIP_TARGET_EFR32], [test "${nl_with_lwip}" = "internal" -a "${nl_with_lwip_target}" = "efr32" ]) |
| |
| ]) |
