configure.ac

   1 # SPDX-License-Identifier: GPL-3.0-only
   2
   3 AC_PREREQ([2.61])
   4 AC_INIT([tfortune], [m4_esyscmd_s(./version-gen.sh)],
   5         [maan@tuebingen.mpg.de], [], [http://people.tuebingen.mpg.de/maan/tfortune/])
   6 AC_CONFIG_HEADERS([config.h])
   7 AC_CONFIG_FILES([config.mak])
   8 AC_USE_SYSTEM_EXTENSIONS
   9 AC_PROG_CC
  10 AC_PROG_CPP
  11
  12 AC_DEFUN([REQUIRE_EXECUTABLE], [
  13         AC_PATH_PROG(m4_toupper([$1]), [$1])
  14         test -z "$m4_toupper([$1])" && AC_MSG_ERROR([$1 is required])
  15 ])
  16 REQUIRE_EXECUTABLE([m4])
  17 REQUIRE_EXECUTABLE([flex])
  18 REQUIRE_EXECUTABLE([bison])
  19 REQUIRE_EXECUTABLE([lopsubgen])
  20
  21 HAVE_LOPSUB=yes
  22 AC_CHECK_HEADER(lopsub.h, [], [HAVE_LOPSUB=no])
  23 AC_CHECK_LIB([lopsub], [lls_merge], [], [HAVE_LOPSUB=no])
  24 if test $HAVE_LOPSUB == no; then AC_MSG_ERROR([
  25         The lopsub library is required to build this software, but
  26         the above checks indicate it is not installed on your system.
  27         Run the following command to download a copy.
  28                 git clone git://git.tuebingen.mpg.de/lopsub.git
  29         Install the library, then run this configure script again.
  30
  31         If you installed lopsub at a non-standard location, make sure to set
  32         PATH, CPPFLAGS and LDFLAGS accordingly. For example:
  33
  34                 pfx=/prefix/where/lopsub/is/installed
  35                 export PATH=\$pfx/bin:\$PATH
  36                 export CPPFLAGS=-I\$pfx/include
  37                 export LDFLAGS=-L\$pfx/lib
  38 ])
  39 fi
  40 AC_OUTPUT