fixes #1087 CMakeLists structural improvements desired

This doesn't modularize all the tests yet, but it goes a long way
in the right direction.

1 files changed, 108 insertions, 0 deletions

diff --git a/src/platform/posix/CMakeLists.txt b/src/platform/posix/CMakeLists.txt
new file mode 100644
index 00000000..02a8cb53
--- /dev/null
+++ b/src/platform/posix/CMakeLists.txt
@@ -0,0 +1,108 @@
+#
+# Copyright 2020 Staysail Systems, Inc. <info@staystail.tech>
+#
+# This software is supplied under the terms of the MIT License, a
+# copy of which should be located in the distribution where this
+# file was obtained (LICENSE.txt).  A copy of the license may also be
+# found online at https://opensource.org/licenses/MIT.
+#
+
+#  POSIX.
+
+# We cannot use nng_sources_if because these tests don't go into
+# the static library unless they also go into the dynamic.
+if (NNG_PLATFORM_POSIX)
+
+    find_package(Threads REQUIRED)
+    nng_link_libraries(Threads::Threads)
+
+    # Unconditionally declare the following feature test macros.  These are
+    # needed for some platforms (glibc and SunOS/illumos) and are harmless
+    # on the others.
+    nng_defines(_GNU_SOURCE)
+    nng_defines(_REENTRANT)
+    nng_defines(_THREAD_SAFE)
+    nng_defines(_POSIX_PTHREAD_SEMANTICS)
+
+    nng_check_func(lockf NNG_HAVE_LOCKF)
+    nng_check_func(flock NNG_HAVE_FLOCK)
+    nng_check_func(getrandom NNG_HAVE_GETRANDOM)
+    nng_check_func(arc4random_buf NNG_HAVE_ARC4RANDOM)
+
+    nng_check_lib(rt clock_gettime NNG_HAVE_CLOCK_GETTIME)
+    nng_check_lib(pthread sem_wait NNG_HAVE_SEMAPHORE_PTHREAD)
+    nng_check_lib(pthread pthread_atfork NNG_HAVE_PTHREAD_ATFORK_PTHREAD)
+    nng_check_lib(pthread pthread_set_name_np NNG_HAVE_PTHREAD_SET_NAME_NP)
+    nng_check_lib(pthread pthread_setname_np NNG_HAVE_PTHREAD_SETNAME_NP)
+    nng_check_lib(nsl gethostbyname NNG_HAVE_LIBNSL)
+    nng_check_lib(socket socket NNG_HAVE_LIBSOCKET)
+
+    # GCC needs libatomic on some architectures (e.g. ARM) because the
+    # underlying architecture may lack the necessary atomic primitives.
+    # One hopes that the libatomic implementation is superior to just using
+    # a pthread mutex.  The symbol chosen here was identified from GCC's
+    # libatomic map file.
+    #
+    # Arguably when using clang, compiler-rt might be better.
+    nng_check_lib(atomic __atomic_load_1 NNG_HAVE_LIBATOMIC)
+
+    nng_check_sym(AF_UNIX sys/socket.h NNG_HAVE_UNIX_SOCKETS)
+    nng_check_sym(backtrace_symbols_fd execinfo.h NNG_HAVE_BACKTRACE)
+    nng_check_struct_member(msghdr msg_control sys/socket.h NNG_HAVE_MSG_CONTROL)
+    nng_check_sym(eventfd sys/eventfd.h NNG_HAVE_EVENTFD)
+    nng_check_sym(kqueue sys/event.h NNG_HAVE_KQUEUE)
+    nng_check_sym(port_create port.h NNG_HAVE_PORT_CREATE)
+    nng_check_sym(epoll_create sys/epoll.h NNG_HAVE_EPOLL)
+    nng_check_sym(epoll_create1 sys/epoll.h NNG_HAVE_EPOLL_CREATE1)
+    nng_check_sym(getpeereid unistd.h NNG_HAVE_GETPEEREID)
+    nng_check_sym(SO_PEERCRED sys/socket.h NNG_HAVE_SOPEERCRED)
+    nng_check_struct_member(sockpeercred uid sys/socket.h NNG_HAVE_SOCKPEERCRED)
+    nng_check_sym(LOCAL_PEERCRED sys/un.h NNG_HAVE_LOCALPEERCRED)
+    nng_check_sym(LOCAL_PEERPID sys/un.h NNG_HAVE_LOCALPEERPID)
+    nng_check_sym(getpeerucred ucred.h NNG_HAVE_GETPEERUCRED)
+    nng_check_sym(atomic_flag_test_and_set stdatomic.h NNG_HAVE_STDATOMIC)
+
+    nng_sources(
+            posix_impl.h
+            posix_aio.h
+            posix_ipc.h
+            posix_config.h
+            posix_pollq.h
+            posix_tcp.h
+
+            posix_alloc.c
+            posix_atomic.c
+            posix_clock.c
+            posix_debug.c
+            posix_file.c
+            posix_ipcconn.c
+            posix_ipcdial.c
+            posix_ipclisten.c
+            posix_pipe.c
+            posix_resolv_gai.c
+            posix_sockaddr.c
+            posix_tcpconn.c
+            posix_tcpdial.c
+            posix_tcplisten.c
+            posix_thread.c
+            posix_udp.c
+    )
+
+    if (NNG_HAVE_PORT_CREATE)
+        nng_sources(posix_pollq_port.c)
+    elseif (NNG_HAVE_KQUEUE)
+        nng_sources(posix_pollq_kqueue.c)
+    elseif (NNG_HAVE_EPOLL AND NNG_HAVE_EVENTFD)
+        nng_sources(posix_pollq_epoll.c)
+    else ()
+        nng_sources(posix_pollq_poll.c)
+    endif ()
+
+    if (NNG_HAVE_ARC4RANDOM)
+        nng_sources(posix_rand_arc4random.c)
+    elseif (NNG_HAVE_GETRANDOM)
+        nng_sources(posix_rand_getrandom.c)
+    else ()
+        nng_sources(posix_rand_urandom.c)
+    endif ()
+endif ()
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