m4/libesmtp.m4

   1 dnl vim:ft=config:
   2
   3 dnl Search for libesmtp, by Steven Engelhardt <sengelha@yahoo.com>
   4 dnl
   5 dnl libesmtp often requires linking against -lpthread or -lc_r (BSD).
   6 dnl This macro attempts to centralize this code.
   7
   8 AC_DEFUN([MUTT_AM_LIBESMTP],
   9 [
  10   AC_ARG_WITH(
  11     [libesmtp],
  12     [  --with-libesmtp=DIR      Compile in support for libesmtp for the MTA],
  13     [ if test "$with_libesmtp" != "no"
  14       then
  15         mutt_libesmtp_check_path="$PATH"
  16
  17         if test "$with_libesmtp" != "yes"
  18         then
  19           mutt_libesmtp_check_path="$tmp_path:$withval/bin"
  20         fi
  21
  22         dnl 1. Find libesmtp-config
  23         AC_PATH_PROG([mutt_libesmtp_config_path],
  24                      [libesmtp-config],
  25                      [no],
  26                      [$mutt_libesmtp_check_path])
  27
  28         if test "$mutt_libesmtp_config_path" = "no"
  29         then
  30           AC_MSG_ERROR([libesmtp-config binary not found.])
  31         fi
  32
  33         dnl 2. Get CFLAGS and LIBS from libesmtp-config
  34         mutt_libesmtp_cflags=`$mutt_libesmtp_config_path --cflags`
  35         mutt_libesmtp_libs=`$mutt_libesmtp_config_path --libs`
  36
  37         dnl 3. Verify libesmtp.h can be found with these settings
  38         temp_CFLAGS="$CFLAGS"
  39         CFLAGS="$CFLAGS $mutt_libesmtp_cflags"
  40         AC_CHECK_HEADER([libesmtp.h],
  41                         [],
  42                         AC_MSG_ERROR([Could not find libesmtp.h]))
  43         CFLAGS="$temp_CFLAGS"
  44
  45         dnl 4. Verify the libesmtp library can be linked in
  46         temp_CFLAGS="$CFLAGS"
  47         temp_LIBS="$LIBS"
  48         CFLAGS="$CFLAGS $mutt_libesmtp_cflags"
  49         LIBS="$LIBS $mutt_libesmtp_libs"
  50         AC_CHECK_LIB([esmtp],
  51                      [smtp_create_session],
  52                      [],
  53                      AC_MSG_ERROR([Could not find libesmtp]))
  54         CFLAGS="$temp_CFLAGS"
  55         LIBS="$temp_LIBS"
  56
  57         dnl 5. Export use_libesmtp variable so configure.in can
  58         dnl    act accordingly.
  59         use_libesmtp=yes
  60       fi
  61     ]
  62   )
  63 ])