AC_PREREQ([2.63])
AC_INIT([jo], [1.9], [jp@mens.de])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_SRCDIR([jo.c])

# Checks for programs.
AC_PROG_CC

# Checks for header files.
AC_USE_SYSTEM_EXTENSIONS
AC_CHECK_HEADERS([stddef.h stdint.h stdlib.h string.h unistd.h stdbool.h])

# Checks for library functions.
# AC_FUNC_MALLOC
# AC_FUNC_REALLOC
AC_FUNC_STRTOD
AC_CHECK_FUNCS([strchr strrchr strlcpy strlcat snprintf pledge err errx])

# backport PKG_CHECK_VAR from pkgconfig 0.29
m4_ifndef([PKG_CHECK_VAR], [AC_DEFUN([PKG_CHECK_VAR],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl

_PKG_CONFIG([$1], [variable="][$3]["], [$2])
AS_VAR_COPY([$1], [pkg_cv_][$1])

AS_VAR_IF([$1], [""], [$5], [$4])dnl
])dnl PKG_CHECK_VAR
])


AM_INIT_AUTOMAKE([foreign -Wall])
AM_SILENT_RULES([yes])
AC_REQUIRE_AUX_FILE([tap-driver.sh])

AC_ARG_VAR(PANDOC, [pandoc path])
AC_PATH_PROG(PANDOC, [pandoc], [])
if test -z "$PANDOC"
then
  AC_MSG_WARN([pandoc not found, man pages rebuild will not be possible])
fi
AM_CONDITIONAL([USE_PANDOC], [test -n "$PANDOC"])

PKG_CHECK_VAR(bashcompdir, [bash-completion], [completionsdir], ,
     bashcompdir="${sysconfdir}/bash_completion.d")
AC_SUBST(bashcompdir)

AC_CONFIG_FILES([Makefile tests/jo.07.sh])
AC_OUTPUT

echo "
  Jo.............: version $PACKAGE_VERSION
  Prefix.........: $prefix
  C compiler.....: $CC $CFLAGS $CPPFLAGS
  Pandoc.........: ${PANDOC:-NONE}
  Bash completion: $bashcompdir/jo.bash

  Now type 'make @<:@<target>@:>@'
    where the optional <target> is:
      all                - build all binaries
      check              - run the tests
      install            - install everything
"