diff options
Diffstat (limited to 'm4/mhd.m4')
| -rw-r--r-- | m4/mhd.m4 | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/m4/mhd.m4 b/m4/mhd.m4 new file mode 100644 index 000000000..40e5b4684 --- /dev/null +++ b/m4/mhd.m4 @@ -0,0 +1,49 @@ +# mhd.m4 + +# This file is part of TALER +# Copyright (C) 2022 Taler Systems SA +# +# TALER is free software; you can redistribute it and/or modify it under the +# terms of the GNU General Public License as published by the Free Software +# Foundation; either version 3, or (at your option) any later version. +# +# TALER is distributed in the hope that it will be useful, but WITHOUT ANY +# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR +# A PARTICULAR PURPOSE. See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along with +# TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/license> + +# serial 1 + +dnl MHD_VERSION_AT_LEAST([VERSION]) +dnl +dnl Check that microhttpd.h can be used to build a program that prints out +dnl the MHD_VERSION tuple in X.Y.Z format, and that X.Y.Z is greater or equal +dnl to VERSION. If not, display message and cause the configure script to +dnl exit failurefully. +dnl +dnl This uses AX_COMPARE_VERSION to do the job. +dnl It sets shell var mhd_cv_version, as well. +dnl +AC_DEFUN([MHD_VERSION_AT_LEAST], +[AC_CACHE_CHECK([libmicrohttpd version],[mhd_cv_version], + [AC_LINK_IFELSE([AC_LANG_PROGRAM([[ + #include <stdio.h> + #include <microhttpd.h> +]],[[ + int v = MHD_VERSION; + printf ("%x.%x.%x\n", + (v >> 24) & 0xff, + (v >> 16) & 0xff, + (v >> 8) & 0xff); +]])], + [mhd_cv_version=$(./conftest)], + [mhd_cv_version=0])]) +AX_COMPARE_VERSION([$mhd_cv_version],[ge],[$1],, + [AC_MSG_ERROR([[ +*** +*** You need libmicrohttpd >= $1 to build this program. +*** ]])])]) + +# mhd.m4 ends here |