package/libwebsock/0001-Switch-to-use-pkg-config-to-detect-libevent-and-open.patch

   1 From a6c35dbab5a2a75c176e031122ee64152e50e5d3 Mon Sep 17 00:00:00 2001
   2 From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
   3 Date: Thu, 1 Jan 2015 12:23:43 +0100
   4 Subject: [PATCH] Switch to use pkg-config to detect libevent and openssl
   5
   6 Switching to pkg-config fixes a number of problems when detecting the
   7 libraries. For example the detection of libpthread was failing,
   8 because libevent_threads was added to LIBS before libevent itself,
   9 causing the libpthread test to fail due to missing symbols. pkg-config
  10 is anyway nowadays the preferred way for detecting libraries. It also
  11 has the benefit of working properly in static library situations.
  12
  13 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
  14 ---
  15  configure.ac | 36 ++++++++++++------------------------
  16  1 file changed, 12 insertions(+), 24 deletions(-)
  17
  18 diff --git a/configure.ac b/configure.ac
  19 index d4109ce..fc1cadc 100644
  20 --- a/configure.ac
  21 +++ b/configure.ac
  22 @@ -27,35 +27,20 @@ AC_FUNC_MALLOC
  23  AC_FUNC_REALLOC
  24  AC_CHECK_FUNCS([memset socket strstr])
  25
  26 -AC_CHECK_HEADERS([event2/thread.h], [
  27 -                                       LIBS="-levent_pthreads ${LIBS}"
  28 -                                   ], [
  29 -                                                echo "libevent_pthreads required, failing"
  30 -                                                exit -1
  31 -                                                ])
  32 -AC_CHECK_LIB(pthread, pthread_create, [LIBS="-lpthread ${LIBS}"], [
  33 +AC_CHECK_LIB(pthread, pthread_create, [PTHREAD_LIBS="-lpthread"], [
  34                                                  echo "pthreads required, failing"
  35                                                  exit -1
  36                                                  ])
  37 -AC_CHECK_LIB(event, event_base_dispatch, [], [
  38 -                                               echo "libevent required, failing"
  39 -                                               exit -1
  40 -                                               ])
  41 +
  42 +PKG_CHECK_MODULES([EVENT], [libevent])
  43 +PKG_CHECK_MODULES([EVENT_PTHREAD], [libevent_pthreads])
  44
  45  AS_IF([test "x$with_ssl" != "xno"],
  46         [
  47 -       AC_CHECK_LIB([ssl], [SSL_CTX_new],
  48 -               [
  49 -                       LIBS="-lssl ${LIBS}"
  50 -                       AC_CHECK_LIB([event_openssl], [bufferevent_openssl_socket_new], [
  51 -                               LIBS="-levent_openssl ${LIBS}"
  52 -                               have_ssl=yes
  53 -                       ], [have_ssl=no])
  54 -               ],
  55 -               [have_ssl=no])
  56 -       ],
  57 -       [have_ssl=no])
  58 -
  59 +       PKG_CHECK_MODULES([SSL], [openssl], [have_ssl=yes], [have_ssl=no])
  60 +       AS_IF([test "x${have_ssl}" = "xyes"],
  61 +               [PKG_CHECK_MODULES([EVENT_OPENSSL], [libevent_openssl], [have_ssl=yes], [have_ssl=no])])])
  62 +
  63  AS_IF([test "x$have_ssl" = "xyes"],
  64         [
  65                 AC_DEFINE([WEBSOCK_HAVE_SSL], [1], [Define if building SSL support])
  66 @@ -63,8 +48,11 @@ AS_IF([test "x$have_ssl" = "xyes"],
  67         [AS_IF([test "x$with_ssl" = "xyes"],
  68                 [AC_MSG_ERROR([SSL support requested but not found])
  69         ])])
  70 -
  71 +
  72  AM_CONDITIONAL([HAVE_SSL], [test "x$have_ssl" = "xyes"])
  73 +
  74 +LIBS="${EVENT_LIBS} ${EVENT_PTHREAD_LIBS} ${PTHREAD_LIBS} ${SSL_LIBS} ${EVENT_OPENSSL_LIBS}"
  75 +
  76  AC_DEFINE_UNQUOTED([WEBSOCK_PACKAGE_VERSION], ["$PACKAGE_VERSION"], [libwebsock version])
  77  AC_DEFINE_UNQUOTED([WEBSOCK_PACKAGE_STRING], ["$PACKAGE_STRING"], [libwebsock package string])
  78  AC_DEFINE_UNQUOTED([WEBSOCK_PACKAGE_NAME], ["$PACKAGE_NAME"], [libwebsock package name])
  79 --
  80 2.1.0
  81