AC_INIT([libpsl], [0.4.0], [tim.ruehsen@gmx.de], [libpsl], [http://github.com/rockdaboot/libpsl])
AC_PREREQ([2.59])
AM_INIT_AUTOMAKE([1.10 -Wall no-define])

# Generate two configuration headers; one for building the library itself with
# an autogenerated template, and a second one that will be installed alongside
# the library.
AC_CONFIG_HEADERS([config.h])
AC_PROG_CXX
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
#LT_INIT([disable-static])
LT_INIT
AC_CONFIG_MACRO_DIR([m4])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

#
# Gettext
#
AM_GNU_GETTEXT([external],[need-ngettext])
AM_GNU_GETTEXT_VERSION([0.18.1])

#
# check for gtk-doc
#
m4_ifdef([GTK_DOC_CHECK], [
GTK_DOC_CHECK([1.15],[--flavour no-tmpl])
],[
AM_CONDITIONAL([ENABLE_GTK_DOC], false)
])

#
# enable creation of man pages
#
AC_ARG_ENABLE(man,[AC_HELP_STRING([--enable-man],
                                  [generate man pages [default=auto]])],enable_man=yes,enable_man=no)
AS_IF([test "$enable_man" != no], [
  AC_PATH_PROG([XSLTPROC], [xsltproc])
  AS_IF([test -z "$XSLTPROC"], [
    AS_IF([test "$enable_man" = yes], [
      AC_MSG_ERROR([xsltproc is required for --enable-man])
    ])
    enable_man=no
  ])
])
AM_CONDITIONAL(ENABLE_MAN, test x$enable_man != xno)
AC_MSG_CHECKING([whether to generate man pages])
AS_IF([ test "$enable_man" != no ], [
  AC_MSG_RESULT([yes])
], [
  AC_MSG_RESULT([no])
])


# Define these substitions here to keep all version information in one place.
# For information on how to properly maintain the library version information,
# refer to the libtool manual, section "Updating library version information":
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
#
# 1. Start with version information of ‘0:0:0’ for each libtool library.
# 2. Update the version information only immediately before a public release of your software. More frequent updates are unnecessary, and only guarantee that the current interface number gets larger faster.
# 3. If the library source code has changed at all since the last update, then increment revision (‘c:r:a’ becomes ‘c:r+1:a’).
# 4. If any interfaces have been added, removed, or changed since the last update, increment current, and set revision to 0.
# 5. If any interfaces have been added since the last public release, then increment age.
# 6. If any existing interfaces have been removed or changed since the last public release, then set age to 0. 
AC_SUBST([LIBPSL_SO_VERSION], [2:0:2])
AC_SUBST([LIBPSL_VERSION], $VERSION)

# Check for libicu
HAVE_LIBICU=no
AC_ARG_WITH(libicu,
  AC_HELP_STRING([--without-libicu], [build libpsl without IDNA/Punycode support]),
  [],
  [
     # using pkg-config won't work on older systems like Ubuntu 12.04 LTS Server Edition 64bit
     OLDLIBS=$LIBS
     LIBS="-licuuc $LIBS"
     AC_MSG_CHECKING([for ICU unicode library])
     AC_LINK_IFELSE(
       [AC_LANG_PROGRAM(
         [[#include <unicode/ustring.h>]],
         [[u_strToUTF8(NULL, 0, NULL, NULL, 0, NULL);]])],
       [HAVE_LIBICU=yes; AC_MSG_RESULT([yes]) AC_DEFINE([WITH_LIBICU], [1], [generate PSL data with IDNA2008 UTS#46 punycode])],
       [LIBS=$OLDLIBS; AC_MSG_ERROR([no working ICU unicode library was found])])

#    AC_SEARCH_LIBS(uidna_close, icuuc,
#      [HAVE_LIBICU=yes; AC_DEFINE([WITH_LIBICU], [1], [generate PSL data with IDNA2008 UTS#46 punycode])],
#      [AC_MSG_ERROR(*** libicu was not found. Aborting.)],
#      -licudata )
#    PKG_CHECK_MODULES(LIBICU, [icu-uc],
#      [HAVE_LIBICU=yes; AC_DEFINE([WITH_LIBICU], [1], [generate PSL data with IDNA2008 UTS#46 punycode])])
  ])

# Check for enable/disable builtin PSL data
AC_ARG_ENABLE(builtin,
  AS_HELP_STRING([--disable-builtin], [do not compile PSL data into library]),
  [
    enable_builtin=no
  ], [
    enable_builtin=yes
    AC_DEFINE([WITH_BUILTIN], [1], [compile PSL data into library])
    AS_IF([test $HAVE_LIBICU != yes],
      [
        # Check for idn2 fallback to generate punycode
        AC_CHECK_PROG(HAVE_IDN2, idn2, yes, AC_MSG_ERROR(Cannot find required tool 'idn2' as fallback.))
      ])
  ])
AM_CONDITIONAL([WITH_BUILTIN], [test $enable_builtin = yes])

# Check for valgrind
ac_enable_valgrind=no
AC_ARG_ENABLE(valgrind-tests,
  AS_HELP_STRING([--enable-valgrind-tests], [enable using Valgrind for tests]),
  [ac_enable_valgrind=$enableval], [ac_enable_valgrind=no])

if test "${ac_enable_valgrind}" = "yes" ; then
  AC_CHECK_PROG(HAVE_VALGRIND, valgrind, yes, no)
  if test "$HAVE_VALGRIND" = "yes" ; then
    VALGRIND_ENVIRONMENT="valgrind --error-exitcode=1 --leak-check=yes --show-reachable=yes --track-origins=yes"
    AC_SUBST(VALGRIND_ENVIRONMENT)
    TESTS_INFO="Test suite will be run under Valgrind"
  else
    TESTS_INFO="Valgrind not found"
  fi
else
  TESTS_INFO="Valgrind testing not enabled"
fi

# Check for custom PSL file
AC_ARG_WITH(psl-file,
  AC_HELP_STRING([--with-psl-file=[PATH]], [path to PSL file]),
  PSL_FILE=$withval,
  PSL_FILE="\$(top_srcdir)/data/effective_tld_names.dat")
AC_SUBST(PSL_FILE)

# Check for custom PSL test file
AC_ARG_WITH(psl-testfile,
  AC_HELP_STRING([--with-psl-testfile=[PATH]], [path to PSL test file]),
  PSL_TESTFILE=$withval,
  PSL_TESTFILE="\$(top_srcdir)/data/test_psl.txt")
AC_SUBST(PSL_TESTFILE)

# Override the template file name of the generated .pc file, so that there
# is no need to rename the template file when the API version changes.
AC_CONFIG_FILES([Makefile
                 include/Makefile
                 src/Makefile
                 tools/Makefile
                 po/Makefile.in
                 docs/libpsl/Makefile
                 docs/libpsl/version.xml
                 data/Makefile
                 tests/Makefile
                 libpsl.pc:libpsl.pc.in])
AC_OUTPUT

AC_MSG_NOTICE([Summary of build options:

  Version:           ${PACKAGE_VERSION}
  Host OS:           ${host_os}
  Install prefix:    ${prefix}
  Compiler:          ${CC}
  CFlags:            ${CFLAGS} ${CPPFLAGS}
  LDFlags:           ${LDFLAGS}
  ICU:               ${HAVE_LIBICU}
  Builtin PSL:       ${enable_builtin}
  PSL File:          ${PSL_FILE}
  PSL Test File:     ${PSL_TESTFILE}
  Tests:             ${TESTS_INFO}
])