m4/check_ssl.m4

   1 ##### http://autoconf-archive.cryp.to/check_ssl.html
   2 #
   3 # SYNOPSIS
   4 #
   5 #   CHECK_SSL
   6 #
   7 # DESCRIPTION
   8 #
   9 #   This macro will check various standard spots for OpenSSL including
  10 #   a user-supplied directory. The user uses '--with-ssl' or
  11 #   '--with-ssl=/path/to/ssl' as arguments to configure.
  12 #
  13 #   If OpenSSL is found the include directory gets added to CFLAGS and
  14 #   CXXFLAGS as well as '-DHAVE_SSL', '-lssl' & '-lcrypto' get added to
  15 #   LIBS, and the libraries location gets added to LDFLAGS. Finally
  16 #   'HAVE_SSL' gets set to 'yes' for use in your Makefile.in I use it
  17 #   like so (valid for gmake):
  18 #
  19 #       HAVE_SSL = @HAVE_SSL@
  20 #       ifeq ($(HAVE_SSL),yes)
  21 #           SRCS+= @srcdir@/my_file_that_needs_ssl.c
  22 #       endif
  23 #
  24 #   For bsd 'bmake' use:
  25 #
  26 #       .if ${HAVE_SSL} == "yes"
  27 #           SRCS+= @srcdir@/my_file_that_needs_ssl.c
  28 #       .endif
  29 #
  30 # LAST MODIFICATION
  31 #
  32 #   2003-01-28
  33 #
  34 # COPYLEFT
  35 #
  36 #   Copyright (c) 2003 Mark Ethan Trostler <trostler@juniper.net>
  37 #
  38 #   Copying and distribution of this file, with or without
  39 #   modification, are permitted in any medium without royalty provided
  40 #   the copyright notice and this notice are preserved.
  41
  42 AC_DEFUN([CHECK_SSL],
  43 [
  44 dnl AC_MSG_CHECKING(if ssl is wanted)
  45 AC_ARG_WITH(ssl,
  46 [  --with-ssl enable ssl [will check /usr/local/ssl
  47                             /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr ]
  48 ])
  49 dnl [   AC_MSG_RESULT(yes)
  50     for dir in $withval /usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr; do
  51         ssldir="$dir"
  52         if test -f "$dir/include/openssl/ssl.h"; then
  53             found_ssl="yes";
  54             SSL_CFLAGS="$CFLAGS -I$ssldir/include/openssl -DHAVE_SSL";
  55             AC_SUBST(SSL_CFLAGS)
  56             SSL_CXXFLAGS="$CXXFLAGS -I$ssldir/include/openssl -DHAVE_SSL";
  57             AC_SUBST(SSL_CXXFLAGS)
  58             break;
  59         fi
  60         if test -f "$dir/include/ssl.h"; then
  61             found_ssl="yes";
  62             SSL_CFLAGS="$CFLAGS -I$ssldir/include/ -DHAVE_SSL";
  63             AC_SUBST(SSL_CFLAGS)
  64             SSL_CXXFLAGS="$CXXFLAGS -I$ssldir/include/ -DHAVE_SSL";
  65             AC_SUBST(SSL_CXXFLAGS)
  66             break
  67         fi
  68     done
  69     if test x_$found_ssl != x_yes; then
  70         AC_MSG_ERROR(Cannot find ssl libraries)
  71     else
  72         printf "OpenSSL found in $ssldir\n";
  73         SSL_LIBS="$LIBS -lssl -lcrypto";
  74         AC_SUBST(SSL_LIBS)
  75         SSL_LDFLAGS="$LDFLAGS -L$ssldir/lib";
  76         AC_SUBST(SSL_LDFLAGS)
  77         HAVE_SSL=yes
  78     fi
  79     AC_SUBST(HAVE_SSL)
  80 dnl ],
  81 dnl [
  82 dnl     AC_MSG_RESULT(no)
  83 dnl ])
  84 ])dnl