#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.69])
AC_INIT([Extract PDFmark], [1.1.1], , [extractpdfmark],
       [https://github.com/trueroad/extractpdfmark])
AM_INIT_AUTOMAKE([foreign])
AC_CONFIG_SRCDIR([src/main.cc])
AC_CONFIG_HEADERS([config.h])

PACKAGE_COPYRIGHT="Copyright (C) 2016-2022 Masamichi Hosoda"
PACKAGE_LICENSE="License: GPL3+"

AC_SUBST([PACKAGE_COPYRIGHT])
AC_SUBST([PACKAGE_LICENSE])
AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT], ["$PACKAGE_COPYRIGHT"],
                  [Define to the copyright of this package.])
AC_DEFINE_UNQUOTED([PACKAGE_LICENSE], ["$PACKAGE_LICENSE"],
                  [Define to the license of this package.])

# Checks for programs.
AC_PROG_CXX
AX_CXX_COMPILE_STDCXX_11([noext], [mandatory])
AC_PROG_RANLIB
AC_PROG_GREP

AC_PATH_PROG([DIFF], [diff])
AS_IF([test "x$DIFF" = x],
     [AC_MSG_WARN([diff isn't found. `make check' will skip tests.])])
AC_SUBST([DIFF])

AC_PATH_PROG([GHOSTSCRIPT], [gs])
AS_IF([test ! "x$GHOSTSCRIPT" = x],
     [AC_MSG_CHECKING([for gs version ( >= 9.14 )])
      gs_ver=`$GHOSTSCRIPT --version`
      AX_COMPARE_VERSION([$gs_ver], [ge], [9.14],
          [AC_MSG_RESULT([yes])],
          [AC_MSG_RESULT([no])
           GHOSTSCRIPT=])])
AM_CONDITIONAL([HAVE_GHOSTSCRIPT], [test ! "x$GHOSTSCRIPT" = x])
AM_COND_IF([HAVE_GHOSTSCRIPT],
          ,
          [AC_MSG_WARN(
               [Ghostscript isn't found. `make check' will skip some tests.])])
AC_SUBST([GHOSTSCRIPT])

AC_MSG_CHECKING([for pre-generated test PDFs])
AS_IF([test ! -e ${srcdir}/test/desttype.pdf],
     [AC_MSG_RESULT([no])
      AC_PATH_PROG([PDFTEX], [pdftex])
      AS_IF([test "x$PDFTEX" = x],
            [AC_MSG_WARN(
                 [pdftex isn't found. Test PDFs cannot be generated.])
             AC_MSG_WARN(
                 [You cannot use `make check'.])],
            [AM_COND_IF([HAVE_GHOSTSCRIPT],
                        [AC_MSG_NOTICE(
                            [pdftex is found. Test PDFs will be generated.])],
                        [AC_MSG_WARN(
                            [pdftex is found but ghostscript isn't found.])
                         AC_MSG_WARN(
                            [You cannot use `make check'.])])])],
     [AC_MSG_RESULT([yes])])
AC_SUBST([PDFTEX])

AC_MSG_CHECKING([for pre-generated expected PDFmark files])
AS_IF([test ! -e ${srcdir}/test/desttype-expected.pdfmark],
     [AC_MSG_RESULT([no])
      AC_MSG_WARN(
          [PDFmark files will be generated.])
      AC_MSG_WARN(
          [`make check' cannot compare with the correct expected results.])],
     [AC_MSG_RESULT([yes])])

# Checks for libraries.
PKG_PROG_PKG_CONFIG

AC_ARG_WITH([poppler],
            AS_HELP_STRING([--with-poppler=@<:@auto|cpp|glib|core|core-private@:>@],
                           [Poppler I/F (default: auto)]),
                           ,
                           [with_poppler=auto])
AS_CASE(["$with_poppler"],
       ["cpp"],
           [AC_MSG_NOTICE([--with-poppler=cpp requires poppler >= 0.74.0])
            PKG_CHECK_MODULES([POPPLER_CPP], [poppler-cpp >= 0.74.0])],
       ["glib"],
           [AC_MSG_NOTICE([--with-poppler=glib requires poppler >= 0.78.0])
            PKG_CHECK_MODULES([POPPLER_GLIB], [poppler-glib >= 0.78.0])],
       ["core"],
           [AC_MSG_NOTICE(
                [--with-poppler=core requires poppler 0.48.0 - 0.75.0])
            PKG_CHECK_MODULES([POPPLER],
                [poppler >= 0.48.0 poppler <= 0.75.0])],
       ["core-private"],
           [AC_MSG_NOTICE(
                [--with-poppler=core-private requires poppler 0.13.3 - 0.75.0])
            PKG_CHECK_MODULES([POPPLER],
                [poppler >= 0.24.4 poppler <= 0.75.0],,
                [PKG_CHECK_MODULES([POPPLER], [poppler >= 0.19.2],
                     [AC_MSG_WARN([poppler < 0.24.4 is found.])
                      AC_MSG_WARN([`make check' will fail some tests.])],
                     [PKG_CHECK_MODULES([POPPLER], [poppler >= 0.13.3])
                      AC_MSG_WARN([poppler < 0.19.2 is found.])
                      AC_MSG_WARN([`make check' will fail some tests.])
                      AC_DEFINE_UNQUOTED([POPPLER_CORE_IF_VERSION],
                          ["`$PKG_CONFIG --modversion poppler`"],
                          [Define poppler version if POPPLER_VERSION cannot be used.])])])],
       ["auto"],
           [AC_MSG_NOTICE([selecting for --with-poppler=auto])
            AC_MSG_NOTICE([ trying for cpp (poppler-cpp >= 0.74.0)])
            PKG_CHECK_MODULES(
                [POPPLER_CPP], [poppler-cpp >= 0.74.0],
                [with_poppler="cpp"],
                [AC_MSG_NOTICE([ trying for glib (poppler-glib >= 0.78.0)])
                 PKG_CHECK_MODULES(
                     [POPPLER_GLIB], [poppler-glib >= 0.78.0],
                     [with_poppler="glib"],
                     [AC_MSG_NOTICE(
                          [ trying for core (poppler 0.48.0 - 0.75.0)])
                      PKG_CHECK_MODULES(
                          [POPPLER], [poppler >= 0.48.0 poppler <= 0.75.0],
                          [with_poppler="core"],
                          [AC_MSG_NOTICE(
                               [ trying for core-private (poppler >= 0.24.4)])
                           PKG_CHECK_MODULES([POPPLER],
                               [poppler >= 0.24.4 poppler <= 0.75.0],
                               [with_poppler="core-private"])])])])
            AC_MSG_NOTICE([use --with-poppler=$with_poppler])],
       [AC_MSG_ERROR([unrecognized --with-poppler argument: $with_poppler])])
AS_CASE(["$with_poppler"],
       ["cpp"],
           [POPPLER_IF="poppler-cpp"
            use_library="cpp"],
       ["glib"],
           [POPPLER_IF="poppler-glib"
            use_library="glib"],
       ["core"],
           [POPPLER_IF="poppler-core"
            use_library="core"
            AC_DEFINE([HAVE_POPPLER_CORE_IF], [1],
                      [Define if poppler-core is selected])],
       ["core-private"],
           [POPPLER_IF="poppler-core private"
            use_library="core"],
       [AC_MSG_ERROR([programming error])])
AM_CONDITIONAL([USE_POPPLER_CORE], [test $use_library = core])
AM_CONDITIONAL([USE_POPPLER_GLIB], [test $use_library = glib])
AM_CONDITIONAL([USE_POPPLER_CPP], [test $use_library = cpp])
AC_DEFINE_UNQUOTED([PACKAGE_STRING], ["$PACKAGE_STRING (with $POPPLER_IF)"],
   [Define to the full name and version, method of this package.])

# Checks for header files.
AM_COND_IF([USE_POPPLER_CORE],
          [AC_LANG_PUSH([C++])
           TEMP_CPPFLAGS=$CPPFLAGS
           CPPFLAGS="$CPPFLAGS $POPPLER_CFLAGS"
           AC_CHECK_HEADERS([Link.h PDFDoc.h PDFDocFactory.h],
               ,
               [AC_MSG_ERROR([poppler xpdf headers are not found.])])
           CPPFLAGS=$TMP_CPPFLAGS
           AC_LANG_POP])

AC_ARG_ENABLE([codecvt],
             [AS_HELP_STRING(
                 [--enable-codecvt],
                 [enable codecvt for UTF-8 checking (default is disable)])],
             ,
             [enable_codecvt=no])
AS_IF([test "x$enable_codecvt" != xno],
     [AC_LANG_PUSH([C++])
      AC_CHECK_HEADERS([codecvt])
      AC_LANG_POP])
AS_IF([test "x$ac_cv_header_codecvt" == xyes],
     [AC_DEFINE([USE_CODECVT], [1], [Define if codecvt is enabled.])])

AC_ARG_ENABLE([iconv],
             [AS_HELP_STRING(
                 [--disable-iconv],
                 [disable iconv for UTF-8 checking (default is enable)])],
             ,
             [enable_iconv=yes])
# AM_ICONV does not seem to be able to put in IF block.
AM_ICONV
AM_CONDITIONAL([USE_ICONV],
   [test "x$enable_iconv" = xyes && \
    test "x$am_cv_func_iconv" = xyes && \
    test "x$ac_cv_header_codecvt" != xyes])
AM_COND_IF([USE_ICONV],
   [AC_DEFINE([USE_ICONV], [1], [Define if iconv is enabled.])],
   [AS_IF([test "x$ac_cv_header_codecvt" != xyes],
       [AC_MSG_WARN(
[Some `make check' will fail since both codecvt and iconv are disabled.])])])

# Checks for typedefs, structures, and compiler characteristics.
AM_COND_IF([USE_POPPLER_CORE],
          [AC_LANG_PUSH([C++])
           TEMP_CPPFLAGS=$CPPFLAGS
           CPPFLAGS="$CPPFLAGS $POPPLER_CFLAGS"
           AC_MSG_CHECKING([for poppler's GooString::c_str ()])
           AC_COMPILE_IFELSE(
               [AC_LANG_PROGRAM(
                    [[ #include <Link.h> ]],
                    [[ GooString goo; const char *dummy = goo.c_str (); ]])],
               [AC_MSG_RESULT([yes])
                AC_DEFINE([HAS_GOOSTRING_C_STR], [1],
                    [Define if poppler's GooString::c_str () exists])],
               [AC_MSG_RESULT([no])])
           CPPFLAGS=$TMP_CPPFLAGS
           AC_LANG_POP])

# Checks for library functions.

AC_CONFIG_FILES([Makefile
                src/Makefile
                src/poppler-core/Makefile
                src/poppler-glib/Makefile
                src/poppler-cpp/Makefile
                man/Makefile
                test/Makefile])
AC_OUTPUT

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