ac/openssl.m4

   1 dnl ******************************
   2 dnl OpenSSL
   3 dnl ******************************
   4
   5 AC_DEFUN(AM_PATH_OPENSSL,
   6 [dnl
   7         AC_ARG_ENABLE(openssl, [  --enable-openssl        Attempt to use OpenSSL for SSL support.],
   8                 [ac_cv_enable_openssl=$enableval], [ac_cv_enable_openssl=no])
   9
  10         dnl delect OpenSSL
  11         if test "x${ac_cv_enable_openssl}" != "xno"; then
  12                 AC_ARG_WITH(openssl-includes, [  --with-openssl-includes=PREFIX     Location of OpenSSL includes.],
  13                         with_openssl_includes="$withval", with_openssl_includes="/usr/include")
  14                 have_openssl_includes="no"
  15                 if test "x${with_openssl_includes}" != "xno"; then
  16                         CPPFLAGS_save="$CPPFLAGS"
  17
  18                         AC_MSG_CHECKING(for OpenSSL includes)
  19                         AC_MSG_RESULT("")
  20
  21                         CPPFLAGS="$CPPFLAGS -I$with_openssl_includes"
  22                         AC_CHECK_HEADERS(openssl/ssl.h openssl/x509.h, [ openssl_includes="yes" ])
  23                         CPPFLAGS="$CPPFLAGS_save"
  24
  25                         if test "x{$openssl_includes}" != "xno" -a "x{$openssl_includes}" != "x"; then
  26                                 have_openssl_includes="yes"
  27                                 OPENSSL_CFLAGS="-I$with_openssl_includes"
  28                         else
  29                                 OPENSSL_CFLAGS=""
  30                         fi
  31                 else
  32                         AC_MSG_CHECKING(for OpenSSL includes)
  33                         AC_MSG_RESULT(no)
  34                 fi
  35
  36                 AC_ARG_WITH(openssl-libs, [  --with-openssl-libs=PREFIX         Location of OpenSSL libs.],
  37                         with_openssl_libs="$withval")
  38                 if test "x${with_openssl_libs}" != "xno" -a "x${have_openssl_includes}" != "xno"; then
  39                         LIBS_save="$LIBS"
  40
  41                         case $with_openssl_libs in
  42                         ""|-L*) ;;
  43                         *) with_openssl_libs="-L$with_openssl_libs" ;;
  44                         esac
  45
  46                         AC_CHECK_LIB(dl, dlopen, DL_LIBS="-ldl", DL_LIBS="")
  47                         AC_CACHE_CHECK([for OpenSSL libraries], openssl_libs,
  48                         [
  49                                 LIBS="$LIBS $with_openssl_libs -lssl -lcrypto $DL_LIBS"
  50                                 AC_TRY_LINK_FUNC(SSL_read, openssl_libs="yes", openssl_libs="no")
  51                                 LIBS="$LIBS_save"
  52                         ])
  53                         if test "x${openssl_libs}" != "xno"; then
  54                                 AC_DEFINE(USE_OPENSSL, 1, [Define if you use OpenSSL to support SSL])
  55                                 msg_ssl="yes (OpenSSL)"
  56                                 OPENSSL_LIBS="$with_openssl_libs -lssl -lcrypto $DL_LIBS"
  57                         else
  58                                 OPENSSL_CFLAGS=""
  59                                 OPENSSL_LIBS=""
  60                         fi
  61                 else
  62                         AC_MSG_CHECKING(for OpenSSL libraries)
  63                         AC_MSG_RESULT(no)
  64                 fi
  65         else
  66                 OPENSSL_CFLAGS=""
  67                 OPENSSL_LIBS=""
  68                 ac_cv_enable_openssl="no"
  69         fi
  70
  71         AC_SUBST(OPENSSL_CFLAGS)
  72         AC_SUBST(OPENSSL_LIBS)
  73 ])