dnl configure.in by David Necas (Yeti) <yeti@physics.muni.cz>

dnl This file is in public domain.

dnl Process this file with autoconf to produce a configure script.

dnl Shake before use.

AC_INIT(Enca, 1.19, [https://github.com/nijel/enca/issues])

AC_PREREQ(2.52)

AC_CONFIG_SRCDIR(src/enca.c)

AC_CONFIG_MACRO_DIR([m4])

AC_CONFIG_FILES( \

  Makefile \

  enca.spec \

  enca.pc \

  devel-docs/Makefile \

  data/Makefile \

  lib/Makefile \

  script/Makefile \

  script/b-cstocs \

  script/b-map \

  script/b-piconv \

  script/b-umap \

  src/Makefile \

  src/HELP \

  test/Makefile \

  tools/Makefile)

AC_CONFIG_HEADERS(config.h)

AM_INIT_AUTOMAKE([1.8 gnits check-news dist-xz])

AM_ACLOCAL_INCLUDE(m4)

AM_MAINTAINER_MODE

dnl RPM release (normally always 1, may be manually changed by package

dnl maintainer in spec later)

RELEASE=1

dnl Checks for programs.

AC_PROG_AWK

AC_PROG_CC

AC_GNU_SOURCE

AC_AIX

AC_ISC_POSIX

AC_PROG_LIBTOOL

AC_PROG_CC

AM_PROG_CC_C_O

AC_PROG_INSTALL

AC_PROG_LN_S

AC_PATH_PROG(MKTEMP_PROG, mktemp)

dnl With GCC, be paranoiac.  It should compile really cleanly.

dnl Except -Wno-sign-compare, but older gcc's don't know it.

if test "$GCC" = yes; then

  CFLAGS="-Wall -Wextra -W -pedantic $CFLAGS"

fi

dnl Check for various external converters.

AC_PATH_PROG(CSTOCS_PROG, cstocs)

AC_PATH_PROG(RECODE_PROG, recode)

AC_PATH_PROG(UMAP_PROG, umap)

AC_PATH_PROG(PICONV_PROG, piconv)

AC_PATH_PROG(MAP_PROG, map)

dnl External convetor.  It may be disabled later, if fork() doesn't work.

AC_ARG_ENABLE(external,

  [  --enable-external       enable conversion using external programs @<:@yes@:>@],

  [case "${enableval}" in

    yes) WANT_EXTERNAL=yes ;;

    no)  WANT_EXTERNAL=no ;;

    *)   AC_MSG_ERROR(bad value ${enableval} for --enable-external) ;;

    esac],

  [WANT_EXTERNAL=yes])

dnl gcov coverage

AM_GCOV

dnl Fool autoconf, it can't parse the for-cycle below

if false; then

AC_DEFINE_UNQUOTED(CSTOCS_PROG,"",[Define to path to the cstocs recoder.])

AC_DEFINE_UNQUOTED(MAP_PROG,"",[Define to path to the map recoder.])

AC_DEFINE_UNQUOTED(RECODE_PROG,"",[Define to path to the recode recoder.])

AC_DEFINE_UNQUOTED(PICONV_PROG,"",[Define to path to the piconv recoder.])

AC_DEFINE_UNQUOTED(UMAP_PROG,"",[Define to path to the umap recoder.])

fi

dnl Find default external converter

for w in cstocs recode piconv map umap; do

  wPROG=`echo $w | tr $as_cr_letters $as_cr_LETTERS`_PROG

  # Is this POSIX?  But even ash supports it.

  eval wPROGcv=$`echo ac_cv_path_$wPROG`

  if test -n "$wPROGcv"; then

    AC_DEFINE_UNQUOTED($wPROG,"$wPROGcv")

    if test -z "$DEFAULT_EXTERNAL_CONVERTER"; then

      DEFAULT_EXTERNAL_CONVERTER=$w

    fi

  fi

done

dnl And for gtk-doc

gtk_CHECK_GTK_DOC

dnl Checks for libraries.

ye_CHECK_LIBM

dnl Checks for header files.

AC_HEADER_STDC

AC_HEADER_SYS_WAIT

AC_HEADER_TIME

AC_HEADER_STAT

AC_HEADER_STDBOOL

AC_CHECK_HEADERS( \

  errno.h \

  fcntl.h \

  getopt.h \

  langinfo.h \

  limits.h \

  locale.h \

  memory.h \

  string.h \

  strings.h \

  sys/stat.h \

  sys/types.h \

  sys/wait.h \

  sys/time.h \

  time.h \

  unistd.h \

  wordexp.h)

dnl Checks for typedefs, structures, and compiler characteristics.

AC_C_CONST

AC_TYPE_SIZE_T

AC_TYPE_MODE_T

AC_TYPE_OFF_T

AC_TYPE_PID_T

AC_TYPE_UID_T

AC_CHECK_TYPE(ssize_t, int)

# FIXME: This is crude.  It seems to work on Linux, though.

AC_CHECK_DECLS(LC_MESSAGES,,,[#include <locale.h>])

ye_CHECK_VAR_PROGRAM_INVOCATION_SHORT_NAME

dnl Checks for library functions.

AC_FUNC_FORK

AC_CHECK_FUNCS( \

  ftruncate \

  gettimeofday \

  isatty \

  nl_langinfo \

  random \

  realpath \

  strstr \

  stpcpy \

  setlocale \

  ttyname \

  wordexp)

AC_REPLACE_FUNCS(getopt_long)

dnl Following two check for much more than just library functions, iconv test

dnl in fact has to build a simple iconv app to find out wheter it's usable.

CONVERTER_LIBS=

ye_CHECK_FUNC_ICONV_USABLE

ye_CHECK_LIB_RECODE

DEFAULT_CONVERTER_LIST="built-in"

if test "$librecode_ok" = "yes"; then

  DEFAULT_CONVERTER_LIST="$DEFAULT_CONVERTER_LIST,librecode"

else

  if test "$libiconv_ok" = "yes"; then

    DEFAULT_CONVERTER_LIST="$DEFAULT_CONVERTER_LIST,iconv"

  fi

fi

AC_DEFINE_UNQUOTED(DEFAULT_CONVERTER_LIST,"$DEFAULT_CONVERTER_LIST",[Define to default converter list.])

if test "$WANT_EXTERNAL" = "yes" -a "$ac_cv_func_fork_works" = "yes"; then

  AC_DEFINE(ENABLE_EXTERNAL,1,[Define to enable external converter programs.])

  if test -n "$DEFAULT_EXTERNAL_CONVERTER"; then

    enable_external="yes ($DEFAULT_EXTERNAL_CONVERTER)"

  else

    enable_external="yes (but no suitable found)"

  fi

else

  enable_external=no

  DEFAULT_EXTERNAL_CONVERTER=

fi

AC_DEFINE_UNQUOTED(DEFAULT_EXTERNAL_CONVERTER,"$DEFAULT_EXTERNAL_CONVERTER",[Define to default external converter program.])

dnl Try to find locale.alias.  FIXME! FIXME! FIXME! This works on GNU/Linux and

dnl perhaps nowhere else.  Any suggestions are welcome.

ye_PATH_LOCALE_ALIAS

dnl Random filename generation in scripts

if test -n "$MKTEMP_PROG"; then

  SHELL_RANDOM_FILENAME='`'$MKTEMP_PROG' /tmp/enca-$$-XXXXXXXX`'

else

  SHELL_RANDOM_FILENAME='/tmp/enca-$$-$RANDOM'

fi

AC_SUBST(RELEASE)

AC_SUBST(CONVERTER_LIBS)

AC_SUBST(DEFAULT_EXTERNAL_CONVERTER)

AC_SUBST(DEFAULT_CONVERTER_LIST)

AC_SUBST(SHELL_RANDOM_FILENAME)

AC_OUTPUT

dnl Inform user what optional features will be built.

if test "$yeti_recode_buggy" = yes; then

  librecode_state="$librecode_ok (buggy, see above)"

else

  librecode_state="$librecode_ok"

fi

if test -z "$yeti_cv_file_locale_alias"; then

  locale_alias_state="built-in (naive)"

else

  locale_alias_state="$yeti_cv_file_locale_alias"

fi

if test "$ac_cv_func_wordexp" = yes; then

  ENCAOPT_state="$ac_cv_func_wordexp"

else

  ENCAOPT_state="built-in parser (naive)"

fi

if test "$enable_static" = yes; then

  if test "$enable_shared" = yes; then

    libenca_state="static, shared"

  else

    libenca_state=static

  fi

else

  if test "$enable_shared" = yes; then

    # Can this happen?

    libenca_state=shared

  else

    libenca_state="not at all?"

  fi

fi

echo "================================================================="

echo "  Features:"

echo "    libenca will be built as:            $libenca_state"

echo "    GNU recode library interface:        $librecode_state"

echo "    UNIX98 iconv interface:              $libiconv_ok"

if test "$libiconv_ok" != "yes" && test "$librecode_ok" != "yes"; then

echo "    (consider installing at least one of GNU libiconv and GNU librecode)"

fi

echo "    External converters:                 $enable_external"

echo "    Language preferences from locale:    $ac_cv_func_setlocale"

if test "$ac_cv_func_setlocale" = yes; then

echo "    Language aliases decryption:         $locale_alias_state"

fi

echo "    Target charset from locale:          $ac_cv_func_nl_langinfo"

echo "    ENCAOPT environment variable:        $ENCAOPT_state"

echo "================================================================="

ye_WARN_FAIL($ac_cv_header_stdc,"ISO C headers")

ye_WARN_FAIL($ac_cv_header_unistd_h,"unistd.h")

ye_WARN_FAIL($ac_cv_header_sys_types_h,"sys/types.h")

ye_WARN_FAIL($ac_cv_header_sys_stat_h,"sys/stat.h")

echo

echo "Configure complete, now type \`make' to compile enca."

echo "If it compiles, don't forget to run \`make check'."