ac/openssl.m4

   1 dnl ******************************
   2 dnl OpenSSL
   3 dnl ******************************
   4
   5 AC_DEFUN([AM_PATH_OPENSSL],
   6 [dnl
   7         USE_OPENSSL=0
   8
   9         AC_ARG_ENABLE(openssl, [  --enable-openssl        Attempt to use OpenSSL for SSL support.],
  10                 [ac_cv_enable_openssl=$enableval], [ac_cv_enable_openssl=no])
  11
  12         dnl detect OpenSSL
  13         if test "x${ac_cv_enable_openssl}" != "xno"; then
  14                 AC_ARG_WITH(openssl-includes, [  --with-openssl-includes=PREFIX     Location of OpenSSL includes.],
  15                         with_openssl_includes="$withval", with_openssl_includes="/usr/include")
  16                 have_openssl_includes="no"
  17                 if test "x${with_openssl_includes}" != "xno"; then
  18                         CPPFLAGS_save="$CPPFLAGS"
  19
  20                         AC_MSG_CHECKING(for OpenSSL includes)
  21                         AC_MSG_RESULT("")
  22
  23                         CPPFLAGS="$CPPFLAGS -I$with_openssl_includes"
  24                         AC_CHECK_HEADERS(openssl/ssl.h openssl/x509.h, [ openssl_includes="yes" ])
  25                         CPPFLAGS="$CPPFLAGS_save"
  26
  27                         if test "x{$openssl_includes}" != "xno" -a "x{$openssl_includes}" != "x"; then
  28                                 have_openssl_includes="yes"
  29                                 OPENSSL_CFLAGS="-I$with_openssl_includes"
  30                         else
  31                                 OPENSSL_CFLAGS=""
  32                         fi
  33                 else
  34                         AC_MSG_CHECKING(for OpenSSL includes)
  35                         AC_MSG_RESULT(no)
  36                 fi
  37
  38                 AC_ARG_WITH(openssl-libs, [  --with-openssl-libs=PREFIX         Location of OpenSSL libs.],
  39                         with_openssl_libs="$withval")
  40                 if test "x${with_openssl_libs}" != "xno" -a "x${have_openssl_includes}" != "xno"; then
  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_save="$LIBS"
  50                                 LIBS="$LIBS $with_openssl_libs -lssl -lcrypto $DL_LIBS"
  51                                 AC_TRY_LINK_FUNC(SSL_read, openssl_libs="yes", openssl_libs="no")
  52                                 LIBS="$LIBS_save"
  53                         ])
  54                         if test "x${openssl_libs}" != "xno"; then
  55                                 AC_DEFINE(USE_OPENSSL, 1, [Define if you use OpenSSL to support SSL])
  56                                 USE_OPENSSL=1
  57                                 msg_ssl="yes (OpenSSL)"
  58                                 OPENSSL_LIBS="$with_openssl_libs -lssl -lcrypto $DL_LIBS"
  59                         else
  60                                 OPENSSL_CFLAGS=""
  61                                 OPENSSL_LIBS=""
  62                         fi
  63                 else
  64                         AC_MSG_CHECKING(for OpenSSL libraries)
  65                         AC_MSG_RESULT(no)
  66                 fi
  67         else
  68                 OPENSSL_CFLAGS=""
  69                 OPENSSL_LIBS=""
  70                 ac_cv_enable_openssl="no"
  71         fi
  72
  73         AC_SUBST(OPENSSL_CFLAGS)
  74         AC_SUBST(OPENSSL_LIBS)
  75 ])