config/lyxinclude.m4

   1 dnl Some useful functions for LyXs configure.in                 -*- sh -*-
   2 dnl Author: Jean-Marc Lasgouttes (Jean-Marc.Lasgouttes@inria.fr)
   3 dnl         Lars Gullik Bjønnes (larsbj@lyx.org)
   4 dnl         Allan Rae (rae@lyx.org)
   5
   6 dnl Compute the default build type from AC_PACKAGE_VERSION at autoconf time.
   7 m4_define([LYX_BUILD_TYPE], [m4_bmatch(AC_PACKAGE_VERSION,
   8     [dev], [development],
   9     [pre\|alpha\|beta\|rc], [prerelease],
  10     [release])])
  11
  12
  13 dnl Usage LYX_CHECK_VERSION   Displays version of LyX being built and
  14 dnl sets variable "build_type"
  15 AC_DEFUN([LYX_CHECK_VERSION],[
  16 echo "configuring LyX version" AC_PACKAGE_VERSION
  17
  18 AC_MSG_CHECKING([for build type])
  19 lyx_devel_version=no
  20 lyx_prerelease=no
  21 AC_ARG_ENABLE(build-type,
  22   AC_HELP_STRING([--enable-build-type=STR],[set build type to rel(ease), pre(release), dev(elopment), prof(iling), or gprof (default: LYX_BUILD_TYPE)]),
  23   [case $enableval in
  24     dev*) build_type=development;;
  25     pre*) build_type=prerelease;;
  26     prof*)  build_type=profiling;;
  27     gprof*) build_type=gprof;;
  28     rel*) build_type=release;;
  29     *) AC_MSG_ERROR([bad build type specification \"$enableval\". Please use one of rel(ease), pre(release), dev(elopment), prof(iling), or gprof]);;
  30    esac],
  31   [build_type=LYX_BUILD_TYPE])
  32 AC_MSG_RESULT([$build_type])
  33 lyx_flags="$lyx_flags build=$build_type"
  34 case $build_type in
  35     development) lyx_devel_version=yes
  36                  LYX_DATE="not released yet" ;;
  37     prerelease) lyx_prerelease=yes ;;
  38 esac
  39
  40 AC_SUBST(lyx_devel_version)
  41 ])
  42
  43
  44 dnl Define the option to set a LyX version on installed executables and directories
  45 dnl
  46 dnl
  47 AC_DEFUN([LYX_VERSION_SUFFIX],[
  48 AC_MSG_CHECKING([for version suffix])
  49 dnl We need the literal double quotes in the rpm spec file
  50 RPM_VERSION_SUFFIX='""'
  51 AC_ARG_WITH(version-suffix,
  52   [AC_HELP_STRING([--with-version-suffix@<:@=STR@:>@], install lyx files as lyxSTR (default STR: -AC_PACKAGE_VERSION))],
  53   [if test "x$withval" = "xyes";
  54    then
  55      withval="-"AC_PACKAGE_VERSION
  56      ac_configure_args=`echo "$ac_configure_args" | sed "s,--with-version-suffix,--with-version-suffix=$withval,"`
  57    fi
  58    AC_SUBST(version_suffix,$withval)
  59    RPM_VERSION_SUFFIX="--with-version-suffix=$withval"])
  60 AC_SUBST(RPM_VERSION_SUFFIX)
  61 AC_SUBST(program_base_name,"lyx")
  62 AC_MSG_RESULT([$withval])
  63 ])
  64
  65
  66 dnl Check whether to configure for Qt5. Default is Qt4.
  67 dnl
  68 AC_DEFUN([LYX_CHECK_QT5],[
  69 AC_MSG_CHECKING([whether Qt5 is requested])
  70 AC_ARG_ENABLE([qt5],
  71   [  --enable-qt5            use Qt5 for building],
  72   USE_QT5=$enableval, USE_QT5=no)
  73 AC_MSG_RESULT([$USE_QT5])
  74 AC_SUBST([USE_QT5])
  75 ])
  76
  77
  78 dnl Usage: LYX_WARNING(message)  Displays the warning "message" and sets the
  79 dnl flag lyx_warning to yes.
  80 AC_DEFUN([LYX_WARNING],[
  81 lyx_warning_txt="$lyx_warning_txt
  82 == $1
  83 "
  84 lyx_warning=yes])
  85
  86
  87 dnl Usage: LYX_LIB_ERROR(file,library)  Displays an error message indication
  88 dnl  that 'file' cannot be found because 'lib' may be uncorrectly installed.
  89 AC_DEFUN([LYX_LIB_ERROR],[
  90 AC_MSG_ERROR([cannot find $1. Please check that the $2 library
  91    is correctly installed on your system.])])
  92
  93
  94 dnl Usage: LYX_CHECK_WARNINGS  Displays a warning message if a LYX_WARNING
  95 dnl   has occurred previously.
  96 AC_DEFUN([LYX_CHECK_WARNINGS],[
  97 if test x$lyx_warning = xyes; then
  98 cat <<EOF
  99 === The following minor problems have been detected by configure.
 100 === Please check the messages below before running 'make'.
 101 === (see the section 'Problems' in the INSTALL file)
 102 $lyx_warning_txt
 103
 104 EOF
 105 fi])
 106
 107
 108 dnl LYX_SEARCH_PROG(VARIABLE-NAME,PROGRAMS-LIST,ACTION-IF-FOUND)
 109 dnl
 110 define(LYX_SEARCH_PROG,[dnl
 111 for ac_prog in $2 ; do
 112 # Extract the first word of "$ac_prog", so it can be a program name with args.
 113   set dummy $ac_prog ; ac_word=$[2]
 114   if test -z "[$]$1"; then
 115     IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
 116     for ac_dir in $PATH; do
 117       test -z "$ac_dir" && ac_dir=.
 118       if test -f [$ac_dir/$ac_word]; then
 119         $1="$ac_prog"
 120         break
 121       fi
 122     done
 123     IFS="$ac_save_ifs"
 124   fi
 125
 126   if test -n "[$]$1"; then
 127     ac_result=yes
 128   else
 129     ac_result=no
 130   fi
 131   ifelse($3,,,[$3])
 132   test -n "[$]$1" && break
 133 done
 134 ])dnl
 135
 136
 137 dnl Usage: LYX_PROG_CLANG: set CLANG to yes if the compiler is clang.
 138 AC_DEFUN([LYX_PROG_CLANG],
 139 [AC_CACHE_CHECK([whether the compiler is clang],
 140                [lyx_cv_prog_clang],
 141 [AC_TRY_COMPILE([], [
 142 #ifndef __clang__
 143             this is not clang
 144 #endif
 145 ],
 146 [lyx_cv_prog_clang=yes ; CLANG=yes], [lyx_cv_prog_clang=no ; CLANG=no])])
 147 if test $CLANG = yes ; then
 148   AC_CACHE_CHECK([for clang version],
 149     [lyx_cv_clang_version],
 150     [clang_noversion=no
 151      AC_COMPUTE_INT(clang_major,__clang_major__,,[clang_noversion_=yes])
 152      AC_COMPUTE_INT(clang_minor,__clang_minor__,,[clang_noversion_=yes])
 153      AC_COMPUTE_INT(clang_patchlevel,__clang_patchlevel__,,[clang_noversion_=yes])
 154      if test $clang_noversion = yes ; then
 155        clang_version=unknown
 156      else
 157        clang_version=$clang_major.$clang_minor.$clang_patchlevel
 158      fi
 159      lyx_cv_clang_version=$clang_version])
 160 fi
 161 ])
 162
 163
 164 dnl Usage: LYX_CXX_CXX11_FLAGS: add to AM_CXXFLAGS the best flag that
 165 selects C++11 mode; gives an error when C++11 mode is not found.
 166 AC_DEFUN([LYX_CXX_CXX11_FLAGS],
 167 [AC_CACHE_CHECK([for at least C++11 mode], [lyx_cv_cxx11_flags],
 168  [lyx_cv_cxx11_flags=none
 169   for flag in -std=c++14 -std=c++11 "" -std=c++0x -std=gnu++14 -std=gnu++11 -std=gnu++0x ; do
 170     save_CPPFLAGS=$CPPFLAGS
 171     CPPFLAGS="$AM_CPPFLAGS $CPPFLAGS"
 172     save_CXXFLAGS=$CXXFLAGS
 173     CXXFLAGS="$flag $AM_CXXFLAGS $CXXFLAGS"
 174     dnl sample openmp source code to test
 175     AC_TRY_COMPILE([
 176        template <typename T>
 177        struct check
 178        {
 179            static_assert(sizeof(int) <= sizeof(T), "not big enough");
 180        };
 181
 182        typedef check<check<bool>> right_angle_brackets;
 183
 184        class TestDeleted
 185        {
 186        public:
 187            TestDeleted() = delete;
 188        };
 189
 190
 191        int a;
 192        decltype(a) b;
 193
 194        typedef check<int> check_type;
 195        check_type c;
 196        check_type&& cr = static_cast<check_type&&>(c);
 197
 198        auto d = a;], [],
 199     [lyx_cv_cxx11_flags=$flag; break])
 200    CXXFLAGS=$save_CXXFLAGS
 201    CPPFLAGS=$save_CPPFLAGS
 202   done])
 203   if test $lyx_cv_cxx11_flags = none ; then
 204     AC_ERROR([Cannot find suitable C++11 mode for compiler $CXX])
 205   fi
 206   AM_CXXFLAGS="$lyx_cv_cxx11_flags $AM_CXXFLAGS"
 207 ])
 208
 209
 210 dnl Usage: LYX_CXX_USE_REGEX
 211 dnl decide whether we want to use std::regex and set the
 212 dnl LYX_USE_STD_REGEX macro and conditional accordingly.
 213 AC_DEFUN([LYX_CXX_USE_REGEX],
 214 [AC_ARG_ENABLE(std-regex,
 215   AC_HELP_STRING([--enable-std-regex],[use std::regex instead of boost::regex (default is autodetected)]),
 216   [lyx_std_regex=$enableval],
 217   [AC_MSG_CHECKING([for correct regex implementation])
 218    save_CPPFLAGS=$CPPFLAGS
 219    CPPFLAGS="$AM_CPPFLAGS $CPPFLAGS"
 220    save_CXXFLAGS=$CXXFLAGS
 221    CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
 222    # The following code snippet has been taken taken from example in
 223    #   http://stackoverflow.com/questions/8561850/compile-stdregex-iterator-with-gcc
 224    AC_TRY_LINK(
 225      [
 226         #include <regex>
 227         #include <iostream>
 228
 229         #include <string.h>
 230
 231         typedef std::regex_iterator<const char *> Myiter;
 232      ], [
 233         const char *pat = "axayaz";
 234         Myiter::regex_type rx("a");
 235         Myiter next(pat, pat + strlen(pat), rx);
 236         Myiter end;
 237    ], [lyx_std_regex=yes], [lyx_std_regex=no])
 238    CXXFLAGS=$save_CXXFLAGS
 239    CPPFLAGS=$save_CPPFLAGS
 240    AC_MSG_RESULT([$lyx_std_regex])
 241  ])
 242
 243  if test $lyx_std_regex = yes ; then
 244   lyx_flags="$lyx_flags std-regex"
 245   AC_DEFINE([LYX_USE_STD_REGEX], 1, [define to 1 if std::regex should be preferred to boost::regex])
 246  fi
 247  AM_CONDITIONAL([LYX_USE_STD_REGEX], test $lyx_std_regex = yes)
 248 ])
 249
 250
 251 dnl Usage: LYX_CXX_USE_CALL_ONCE
 252 dnl check whether we can use std::call_once and set the
 253 dnl LYX_USE_STD_CALL_ONCE macro and conditional accordingly.
 254 AC_DEFUN([LYX_CXX_USE_CALL_ONCE],
 255 [AC_MSG_CHECKING([for std::call_once availability])
 256    save_CPPFLAGS=$CPPFLAGS
 257    CPPFLAGS="$AM_CPPFLAGS $CPPFLAGS"
 258    save_CXXFLAGS=$CXXFLAGS
 259    CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
 260    AC_TRY_LINK(
 261      [
 262         #include <mutex>
 263         static std::once_flag flag;
 264      ], [
 265         std::call_once(flag, [](){ return; });
 266    ], [lyx_std_call_once=yes], [lyx_std_call_once=no])
 267    CXXFLAGS=$save_CXXFLAGS
 268    CPPFLAGS=$save_CPPFLAGS
 269    AC_MSG_RESULT([$lyx_std_call_once])
 270
 271  if test $lyx_std_call_once = yes ; then
 272   AC_DEFINE([LYX_USE_STD_CALL_ONCE], 1, [define to 1 if std::call_once is supported by the compiler])
 273  fi
 274  AM_CONDITIONAL([LYX_USE_STD_CALL_ONCE], test $lyx_std_call_once = yes)
 275 ])
 276
 277
 278 dnl Usage: LYX_LIB_STDCXX: set lyx_cv_lib_stdcxx to yes if the STL library is libstdc++.
 279 AC_DEFUN([LYX_LIB_STDCXX],
 280 [AC_CACHE_CHECK([whether STL is libstdc++],
 281                [lyx_cv_lib_stdcxx],
 282 [AC_TRY_COMPILE([#include<vector>], [
 283 #if ! defined(__GLIBCXX__) && ! defined(__GLIBCPP__)
 284             this is not libstdc++
 285 #endif
 286 ],
 287 [lyx_cv_lib_stdcxx=yes], [lyx_cv_lib_stdcxx=no])])
 288 ])
 289
 290
 291 dnl Usage: LYX_LIB_STDCXX_CXX11_ABI: set lyx_cv_lib_stdcxx_cxx11_abi to yes
 292 dnl        if the STL library is GNU libstdc++ and the C++11 ABI is used.
 293 AC_DEFUN([LYX_LIB_STDCXX_CXX11_ABI],
 294 [AC_CACHE_CHECK([whether STL is libstdc++ using the C++11 ABI],
 295                [lyx_cv_lib_stdcxx_cxx11_abi],
 296 [AC_TRY_COMPILE([#include<vector>], [
 297 #if ! defined(_GLIBCXX_USE_CXX11_ABI) || ! _GLIBCXX_USE_CXX11_ABI
 298             this is not libstdc++ using the C++11 ABI
 299 #endif
 300 ],
 301 [lyx_cv_lib_stdcxx_cxx11_abi=yes], [lyx_cv_lib_stdcxx_cxx11_abi=no])])
 302 ])
 303
 304
 305 AC_DEFUN([LYX_PROG_CXX],
 306 [AC_REQUIRE([AC_PROG_CXX])
 307 AC_REQUIRE([AC_PROG_CXXCPP])
 308
 309 AC_LANG_PUSH(C++)
 310 LYX_PROG_CLANG
 311 LYX_CXX_CXX11_FLAGS
 312 LYX_LIB_STDCXX
 313 LYX_LIB_STDCXX_CXX11_ABI
 314 LYX_CXX_USE_REGEX
 315 LYX_CXX_USE_CALL_ONCE
 316 AC_LANG_POP(C++)
 317
 318 if test $lyx_cv_lib_stdcxx = "yes" ; then
 319   if test $lyx_cv_lib_stdcxx_cxx11_abi = "yes" ; then
 320     AC_DEFINE(USE_GLIBCXX_CXX11_ABI, 1, [use GNU libstdc++ with C++11 ABI])
 321   else
 322     AC_DEFINE(STD_STRING_USES_COW, 1, [std::string uses copy-on-write])
 323   fi
 324 else
 325   if test $lyx_cv_prog_clang = "yes" ; then
 326     AC_DEFINE(USE_LLVM_LIBCPP, 1, [use libc++ provided by llvm instead of GNU libstdc++])
 327   fi
 328 fi
 329
 330 ### We might want to get or shut warnings.
 331 AC_ARG_ENABLE(warnings,
 332   AC_HELP_STRING([--enable-warnings],[tell the compiler to display more warnings]),,
 333   [ if test $lyx_devel_version = yes -o $lyx_prerelease = yes && test $ac_cv_prog_gxx = yes ; then
 334         enable_warnings=yes;
 335     else
 336         enable_warnings=no;
 337     fi;])
 338 if test x$enable_warnings = xyes ; then
 339   lyx_flags="$lyx_flags warnings"
 340 fi
 341
 342 ### We might want to disable debug
 343 AC_ARG_ENABLE(debug,
 344   AC_HELP_STRING([--enable-debug],[enable debug information]),,
 345   [AS_CASE([$build_type], [rel*], [enable_debug=no], [enable_debug=yes])]
 346 )
 347
 348 AC_ARG_ENABLE(stdlib-debug,
 349   AC_HELP_STRING([--enable-stdlib-debug],[enable debug mode in the standard library]),,
 350   [AS_CASE([$build_type], [dev*], [enable_stdlib_debug=yes],
 351           [enable_stdlib_debug=no])]
 352 )
 353
 354 ### set up optimization
 355 AC_ARG_ENABLE(optimization,
 356     AC_HELP_STRING([--enable-optimization@<:@=ARG@:>@],[enable compiler optimisation]),,
 357     enable_optimization=yes;)
 358 case $enable_optimization in
 359     yes)
 360         if test $lyx_devel_version = yes ; then
 361             lyx_optim=-O
 362         else
 363             lyx_optim=-O2
 364         fi;;
 365     no) lyx_optim=;;
 366     *) lyx_optim=${enable_optimization};;
 367 esac
 368
 369 AC_ARG_ENABLE(assertions,
 370   AC_HELP_STRING([--enable-assertions],[add runtime sanity checks in the program]),,
 371   [AS_CASE([$build_type], [dev*|pre*], [enable_assertions=yes],
 372           [enable_assertions=no])]
 373 )
 374 if test "x$enable_assertions" = xyes ; then
 375    lyx_flags="$lyx_flags assertions"
 376    AC_DEFINE(ENABLE_ASSERTIONS,1,
 377     [Define if you want assertions to be enabled in the code])
 378 fi
 379
 380 # set the compiler options correctly.
 381 if test x$GXX = xyes; then
 382   dnl clang++ pretends to be g++ 4.2.1; this is not useful
 383   if test x$CLANG = xno; then
 384     dnl Useful for global version info
 385     gxx_version=`${CXX} -dumpversion`
 386     CXX_VERSION="($gxx_version)"
 387   else
 388     gxx_version=clang-$clang_version
 389     CXX_VERSION="($clang_version)"
 390   fi
 391
 392   AM_CXXFLAGS="$lyx_optim $AM_CXXFLAGS"
 393   if test x$enable_debug = xyes ; then
 394       AM_CXXFLAGS="-g $AM_CXXFLAGS"
 395   fi
 396   if test $build_type = gprof ; then
 397     AM_CXXFLAGS="$AM_CXXFLAGS -pg"
 398     AM_LDFLAGS="$AM_LDFLAGS -pg"
 399   fi
 400   if test $build_type = profiling ; then
 401     AM_CXXFLAGS="$AM_CXXFLAGS -fno-omit-frame-pointer"
 402   fi
 403
 404   if test x$USE_QT5 = xyes ; then
 405       AS_CASE([$host], [*mingw*|*cygwin*], [], [AM_CXXFLAGS="-fPIC $AM_CXXFLAGS"])
 406   fi
 407   dnl Warnings are for preprocessor too
 408   if test x$enable_warnings = xyes ; then
 409       case $gxx_version in
 410           9.*) AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra -Wno-deprecated-copy";;
 411           *) AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra";;
 412       esac
 413     fi
 414   case $gxx_version in
 415       2.*|3.*) AC_ERROR([gcc >= 4.6 is required]);;
 416       4.0*|4.1*|4.2*|4.3*|4.4*|4.5*) AC_ERROR([gcc >= 4.6 is required]);;
 417   esac
 418   if test x$enable_stdlib_debug = xyes ; then
 419     dnl FIXME: for clang/libc++, one should define _LIBCPP_DEBUG2=0
 420     dnl See http://clang-developers.42468.n3.nabble.com/libc-debug-mode-td3336742.html
 421     case $gxx_version in
 422       *)
 423         lyx_flags="$lyx_flags stdlib-debug"
 424         AC_DEFINE(_GLIBCXX_DEBUG, 1, [libstdc++ debug mode])
 425         AC_DEFINE(_GLIBCXX_DEBUG_PEDANTIC, 1, [libstdc++ pedantic debug mode])
 426         AC_SUBST(STDLIB_DEBUG, "-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC")
 427         ;;
 428     esac
 429   fi
 430 fi
 431
 432 # Some additional flags may be needed
 433 if test x$GXX = xyes; then
 434     case $gxx_version in
 435       clang-3.0*|clang-3.1*|clang-3.2*|clang-3.3*)
 436         dnl boost contains pragmas that are annoying on older clang versions
 437         AM_CPPFLAGS="-Wno-unknown-pragmas $AM_CPPFLAGS";;
 438       clang*)
 439         dnl the more recent versions support the deprecated-register warning,
 440         dnl which  is very annoying with Qt4.x right now.
 441         AM_CXXFLAGS="$AM_CXXFLAGS -Wno-deprecated-register";;
 442     esac
 443 fi
 444 ])
 445
 446 dnl Usage: LYX_USE_INCLUDED_BOOST : select if the included boost should
 447 dnl        be used.
 448 AC_DEFUN([LYX_USE_INCLUDED_BOOST],[
 449         AC_MSG_CHECKING([whether to use included boost library])
 450         AC_ARG_WITH(included-boost,
 451             [AC_HELP_STRING([--without-included-boost], [do not use the boost lib supplied with LyX, try to find one in the system directories - compilation will abort if nothing suitable is found])],
 452             [lyx_cv_with_included_boost=$withval],
 453             [lyx_cv_with_included_boost=yes])
 454         AM_CONDITIONAL(USE_INCLUDED_BOOST, test x$lyx_cv_with_included_boost = xyes)
 455         AC_MSG_RESULT([$lyx_cv_with_included_boost])
 456         if test x$lyx_cv_with_included_boost = xyes ; then
 457             lyx_included_libs="$lyx_included_libs boost"
 458             BOOST_INCLUDES='-I$(top_srcdir)/3rdparty/boost'
 459             if test $lyx_std_regex = yes ; then
 460               BOOST_LIBS=""
 461             else
 462               BOOST_LIBS='$(top_builddir)/3rdparty/boost/liblyxboost.a'
 463             fi
 464         else
 465             BOOST_INCLUDES=
 466             if test $lyx_std_regex = yes ; then
 467               BOOST_LIBS=""
 468             else
 469               AC_LANG_PUSH(C++)
 470               save_LIBS=$LIBS
 471
 472               AC_MSG_CHECKING([for multithreaded boost libraries])
 473               LIBS="$save_LIBS -lboost_regex-mt $LIBTHREAD"
 474               AC_LINK_IFELSE(
 475                 [AC_LANG_PROGRAM([#include <boost/regex.hpp>],
 476                         [boost::regex reg;])],
 477                 [AC_MSG_RESULT([yes])
 478                  BOOST_MT="-mt"],
 479                 [AC_MSG_RESULT([no])
 480                  AC_MSG_CHECKING([for plain boost libraries])
 481                  LIBS="$save_LIBS -lboost_regex"
 482                  AC_LINK_IFELSE(
 483                      [AC_LANG_PROGRAM([#include <boost/regex.hpp>],
 484                              [boost::regex reg;])],
 485                      [AC_MSG_RESULT([yes])
 486                       BOOST_MT=""],
 487                      [AC_MSG_RESULT([no])
 488                       AC_MSG_ERROR([cannot find suitable boost library (do not use --without-included-boost)])
 489                  ])
 490               ])
 491               LIBS=$save_LIBS
 492               AC_LANG_POP(C++)
 493
 494               dnl In general, system boost libraries are incompatible with
 495               dnl the use of stdlib-debug in libstdc++. See ticket #9736 for
 496               dnl details.
 497               if test $enable_stdlib_debug = "yes" ; then
 498                 LYX_WARNING([Compiling LyX with stdlib-debug and system boost libraries may lead to
 499    crashes. Consider using --disable-stdlib-debug or removing
 500    --without-included-boost.])
 501               fi
 502
 503               BOOST_LIBS="-lboost_regex${BOOST_MT}"
 504             fi
 505         fi
 506         AC_SUBST(BOOST_INCLUDES)
 507         AC_SUBST(BOOST_LIBS)
 508 ])
 509
 510
 511 dnl Usage: LYX_USE_INCLUDED_ICONV : select if the included iconv should
 512 dnl        be used.
 513 AC_DEFUN([LYX_USE_INCLUDED_ICONV],[
 514   AC_MSG_CHECKING([whether to use included iconv library])
 515   AC_ARG_WITH(included-iconv,
 516     [AC_HELP_STRING([--with-included-iconv], [use the iconv lib supplied with LyX instead of the system one])],
 517     [lyx_cv_with_included_iconv=$withval],
 518     [lyx_cv_with_included_iconv=no])
 519   AM_CONDITIONAL(USE_INCLUDED_ICONV, test x$lyx_cv_with_included_iconv = xyes)
 520   AC_MSG_RESULT([$lyx_cv_with_included_iconv])
 521   if test x$lyx_cv_with_included_iconv = xyes ; then
 522   lyx_included_libs="$lyx_included_libs iconv"
 523
 524 dnl Some bits from libiconv configure.ac to avoid a nested configure call:
 525     AC_EILSEQ
 526     AC_TYPE_MBSTATE_T
 527     AC_CHECK_FUNCS([getc_unlocked mbrtowc wcrtomb mbsinit setlocale])
 528 dnl Ymbstate_t is used if HAVE_WCRTOMB || HAVE_MBRTOWC, see 3rdparty/libiconv/1.14/lib/loop_wchar.h.
 529     if test $ac_cv_func_wcrtomb = yes || test $ac_cv_func_mbrtowc = yes; then
 530       USE_MBSTATE_T=1
 531     else
 532       USE_MBSTATE_T=0
 533     fi
 534     AC_SUBST([USE_MBSTATE_T])
 535     AC_CACHE_CHECK([whether <wchar.h> is standalone],
 536       [gl_cv_header_wchar_h_standalone],
 537       [AC_COMPILE_IFELSE(
 538         [AC_LANG_PROGRAM(
 539           [[#include <wchar.h>
 540             wchar_t w;]],
 541           [[]])],
 542         [gl_cv_header_wchar_h_standalone=yes],
 543         [gl_cv_header_wchar_h_standalone=no])])
 544     if test $gl_cv_header_wchar_h_standalone = yes; then
 545       BROKEN_WCHAR_H=0
 546     else
 547       BROKEN_WCHAR_H=1
 548     fi
 549     AC_SUBST([BROKEN_WCHAR_H])
 550 dnl we want const correctness
 551     AC_DEFINE_UNQUOTED([ICONV_CONST], [const],
 552       [Define as const if the declaration of iconv() needs const.])
 553     ICONV_CONST=const
 554     AC_SUBST([ICONV_CONST])
 555 dnl we build a static lib
 556     DLL_VARIABLE=
 557     AC_SUBST([DLL_VARIABLE])
 558     ICONV_INCLUDES='-I$(top_srcdir)/3rdparty/libiconv/1.14 -I$(top_builddir)/3rdparty/libiconv'
 559     ICONV_LIBS='\$(top_builddir)/3rdparty/libiconv/liblyxiconv.a'
 560     ICONV_ICONV_H_IN=3rdparty/libiconv/iconv.h:3rdparty/libiconv/1.14/include/iconv.h.in
 561   else
 562     ICONV_INCLUDES=
 563     AM_ICONV
 564     if test "$am_cv_func_iconv" = no; then
 565       AC_MSG_ERROR([cannot find required library iconv.])
 566     else
 567       ICONV_LIBS="$LIBICONV"
 568     fi
 569     ICONV_ICONV_H_IN=
 570   fi
 571   AC_SUBST(ICONV_INCLUDES)
 572   AC_SUBST(ICONV_LIBS)
 573   AC_SUBST(ICONV_ICONV_H_IN)
 574 ])
 575
 576
 577 dnl Usage: LYX_USE_INCLUDED_ZLIB : select if the included zlib should
 578 dnl        be used.
 579 AC_DEFUN([LYX_USE_INCLUDED_ZLIB],[
 580   AC_MSG_CHECKING([whether to use included zlib library])
 581   AC_ARG_WITH(included-zlib,
 582     [AC_HELP_STRING([--with-included-zlib], [use the zlib lib supplied with LyX instead of the system one])],
 583     [lyx_cv_with_included_zlib=$withval],
 584     [lyx_cv_with_included_zlib=no])
 585   AM_CONDITIONAL(USE_INCLUDED_ZLIB, test x$lyx_cv_with_included_zlib = xyes)
 586   AC_MSG_RESULT([$lyx_cv_with_included_zlib])
 587   if test x$lyx_cv_with_included_zlib = xyes ; then
 588     lyx_included_libs="$lyx_included_libs zlib"
 589     ZLIB_INCLUDES='-I$(top_srcdir)/3rdparty/zlib/1.2.8 -I$(top_builddir)/3rdparty/zlib'
 590     ZLIB_LIBS='$(top_builddir)/3rdparty/zlib/liblyxzlib.a'
 591     mkdir -p 3rdparty/zlib
 592 dnl include standard config.h for HAVE_UNISTD_H
 593     echo "#include <../../config.h>" > 3rdparty/zlib/zconf.h
 594 dnl prevent clash with system zlib that might be dragged in by other libs
 595     echo "#define Z_PREFIX 1" >> 3rdparty/zlib/zconf.h
 596     cat "${srcdir}/3rdparty/zlib/1.2.8/zconf.h.in" >> 3rdparty/zlib/zconf.h
 597   else
 598     ZLIB_INCLUDES=
 599     AC_CHECK_HEADERS(zlib.h,
 600       [AC_CHECK_LIB(z, gzopen, [ZLIB_LIBS="-lz"], LYX_LIB_ERROR(libz,zlib))],
 601       [LYX_LIB_ERROR(zlib.h,zlib)])
 602   fi
 603   AC_SUBST(ZLIB_INCLUDES)
 604   AC_SUBST(ZLIB_LIBS)
 605 ])
 606
 607
 608 dnl Usage: LYX_CHECK_CALLSTACK_PRINTING: define LYX_CALLSTACK_PRINTING if the
 609 dnl        necessary APIs are available to print callstacks.
 610 AC_DEFUN([LYX_CHECK_CALLSTACK_PRINTING],
 611 [AC_CACHE_CHECK([whether printing callstack is possible],
 612                [lyx_cv_callstack_printing],
 613 [AC_TRY_COMPILE([
 614 #include <execinfo.h>
 615 #include <cxxabi.h>
 616 ], [
 617         void* array[200];
 618         size_t size = backtrace(array, 200);
 619         backtrace_symbols(array, size);
 620         int status = 0;
 621         abi::__cxa_demangle("abcd", 0, 0, &status);
 622 ],
 623 [lyx_cv_callstack_printing=yes], [lyx_cv_callstack_printing=no])])
 624 if test x"$lyx_cv_callstack_printing" = xyes; then
 625   AC_DEFINE([LYX_CALLSTACK_PRINTING], 1,
 626             [Define if callstack can be printed])
 627 fi
 628 ])
 629
 630
 631 dnl Usage: LYX_USE_INCLUDED_MYTHES : select if the included MyThes should
 632 dnl        be used.
 633 AC_DEFUN([LYX_USE_INCLUDED_MYTHES],[
 634   AC_ARG_WITH(included-mythes,
 635     [AC_HELP_STRING([--with-included-mythes], [force to use the MyThes lib supplied with LyX])],
 636     [use_included_mythes=$withval],
 637     [use_included_mythes=no])
 638   if test x$use_included_mythes != xyes ; then
 639     AC_LANG_PUSH(C++)
 640     use_included_mythes=yes
 641     AC_CHECK_HEADERS([mythes.hxx mythes/mythes.hxx],
 642       [mythes_h_location="<$ac_header>"
 643        save_LIBS=$LIBS
 644        AC_MSG_CHECKING([checking for MyThes library])
 645        for ac_lib in mythes mythes-1.2 ; do
 646          LIBS="-l$ac_lib $save_LIBS"
 647          AC_LINK_IFELSE(
 648            [AC_LANG_PROGRAM([#include <cstdio>]
 649               [#include $mythes_h_location], [MyThes dummy("idx","dat")])],
 650            [MYTHES_LIBS=-l$ac_lib
 651             AC_MSG_RESULT([$MYTHES_LIBS])
 652             use_included_mythes=no])
 653        done
 654        if test $use_included_mythes != no ; then
 655          AC_MSG_RESULT([not found])
 656        fi
 657        break])
 658     AC_LANG_POP(C++)
 659   fi
 660   if test $use_included_mythes = yes ; then
 661     mythes_h_location="<mythes.hxx>"
 662     MYTHES_INCLUDES='-I$(top_srcdir)/3rdparty/mythes/1.2.5/'
 663     MYTHES_LIBS='$(top_builddir)/3rdparty/mythes/liblyxmythes.a'
 664     lyx_included_libs="$lyx_included_libs mythes"
 665   fi
 666   AM_CONDITIONAL(USE_INCLUDED_MYTHES, test x$use_included_mythes = xyes)
 667   AC_DEFINE_UNQUOTED(MYTHES_H_LOCATION,$mythes_h_location,[Location of mythes.hxx])
 668   AC_SUBST(MYTHES_INCLUDES)
 669   AC_SUBST(MYTHES_LIBS)
 670   AC_MSG_CHECKING([whether to use included MyThes library])
 671   AC_MSG_RESULT([$use_included_mythes])
 672 ])
 673
 674
 675 dnl Usage: LYX_WITH_DIR(dir-name,desc,dir-var-name,default-value,
 676 dnl                       [default-yes-value])
 677 dnl  Adds a --with-'dir-name' option (described by 'desc') and puts the
 678 dnl  resulting directory name in 'dir-var-name'.
 679 AC_DEFUN([LYX_WITH_DIR],[
 680   AC_ARG_WITH($1,[AC_HELP_STRING([--with-$1],[specify $2])])
 681   AC_MSG_CHECKING([for $2])
 682   if test -z "$with_$3"; then
 683      AC_CACHE_VAL(lyx_cv_$3, lyx_cv_$3=$4)
 684   else
 685     test "x$with_$3" = xyes && with_$3=$5
 686     lyx_cv_$3="$with_$3"
 687   fi
 688   AC_MSG_RESULT($lyx_cv_$3)
 689 ])
 690
 691
 692 dnl Usage: LYX_LOOP_DIR(value,action)
 693 dnl Executes action for values of variable `dir' in `values'. `values' can
 694 dnl use ":" as a separator.
 695 AC_DEFUN([LYX_LOOP_DIR],[
 696 IFS="${IFS=     }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
 697 for dir in `eval "echo $1"`; do
 698   if test ! "$dir" = NONE; then
 699     test ! -d "$dir" && AC_MSG_ERROR([\"$dir\" is not a directory])
 700     $2
 701   fi
 702 done
 703 IFS=$ac_save_ifs
 704 ])
 705
 706
 707 dnl Usage: LYX_ADD_LIB_DIR(var-name,dir) Adds a -L directive to variable
 708 dnl var-name.
 709 AC_DEFUN([LYX_ADD_LIB_DIR],[
 710 $1="${$1} -L$2"
 711 if test "`(uname) 2>/dev/null`" = SunOS &&
 712     uname -r | grep '^5' >/dev/null; then
 713   if test $ac_cv_prog_gxx = yes ; then
 714     $1="${$1} -Wl[,]-R$2"
 715   else
 716     $1="${$1} -R$2"
 717   fi
 718 fi])
 719
 720
 721 dnl Usage: LYX_ADD_INC_DIR(var-name,dir) Adds a -I directive to variable
 722 dnl var-name.
 723 AC_DEFUN([LYX_ADD_INC_DIR],[$1="${$1} -I$2 "])
 724
 725 ### Check for a headers existence and location iff it exists
 726 ## This is supposed to be a generalised version of LYX_STL_STRING_FWD
 727 ## It almost works.  I've tried a few variations but they give errors
 728 ## of one sort or other: bad substitution or file not found etc.  The
 729 ## actual header _is_ found though and the cache variable is set however
 730 ## the reported setting (on screen) is equal to $ac_safe for some unknown
 731 ## reason.
 732 ## Additionally, autoheader can't figure out what to use as the name in
 733 ## the config.h.in file so we need to write our own entries there -- one for
 734 ## each header in the form PATH_HEADER_NAME_H
 735 ##
 736 AC_DEFUN([LYX_PATH_HEADER],
 737 [ AC_CHECK_HEADER($1,[
 738   ac_tr_safe=PATH_`echo $ac_safe | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
 739 ### the only remaining problem is getting the second parameter to this
 740 ### AC_CACHE_CACHE to print correctly. Currently it just results in value
 741 ### of $ac_safe being printed.
 742   AC_CACHE_CHECK([path to $1],[lyx_cv_path2_$ac_safe],
 743   [ cat > conftest.$ac_ext <<EOF
 744 #line __oline__ "configure"
 745 #include "confdefs.h"
 746
 747 #include <$1>
 748 EOF
 749 lyx_path_header_path=`(eval "$ac_cpp conftest.$ac_ext") 2>&5 | \
 750   grep $1  2>/dev/null | \
 751   sed -e 's/.*\(".*$1"\).*/\1/' -e "1q"`
 752 eval "lyx_cv_path2_${ac_safe}=\$lyx_path_header_path"
 753 rm -f conftest*])
 754   AC_DEFINE_UNQUOTED($ac_tr_safe, $lyx_path_header_path, [dummy])])
 755 ])
 756 ### end of LYX_PATH_HEADER
 757
 758 ## Check what kind of packaging should be used at install time.
 759 ## The default is autodetected.
 760 AC_DEFUN([LYX_USE_PACKAGING],
 761 [AC_MSG_CHECKING([what packaging should be used])
 762 AC_ARG_WITH(packaging,
 763   [AC_HELP_STRING([--with-packaging=STR], [set packaging for installation among:
 764                             posix, windows, macosx, haiku (default is autodetected)])],
 765   [lyx_use_packaging="$withval"], [
 766   case $host in
 767     *-apple-darwin*) lyx_use_packaging=macosx ;;
 768     *-pc-mingw*) lyx_use_packaging=windows ;;
 769     *-mingw32*) lyx_use_packaging=windows ;;
 770     *haiku*) lyx_use_packaging=haiku ;;
 771     *) lyx_use_packaging=posix ;;
 772   esac])
 773 AC_MSG_RESULT($lyx_use_packaging)
 774 lyx_install_posix=false
 775 lyx_install_macosx=false
 776 lyx_install_cygwin=false
 777 lyx_install_windows=false
 778 case $lyx_use_packaging in
 779    macosx) AC_DEFINE(USE_MACOSX_PACKAGING, 1, [Define to 1 if LyX should use a MacOS X application bundle file layout])
 780            PACKAGE=LyX${version_suffix}
 781            default_prefix="/Applications/${PACKAGE}.app"
 782            AC_SUBST(osx_bundle_program_name,"${program_base_name}")
 783            bindir='${prefix}/Contents/MacOS'
 784            libdir='${prefix}/Contents/Resources'
 785            datarootdir='${prefix}/Contents/Resources'
 786            pkgdatadir='${datadir}'
 787            mandir='${datadir}/man'
 788            lyx_install_macosx=true ;;
 789   windows) AC_DEFINE(USE_WINDOWS_PACKAGING, 1, [Define to 1 if LyX should use a Windows-style file layout])
 790            PACKAGE=LyX${version_suffix}
 791            default_prefix="C:/Program Files/${PACKAGE}"
 792            bindir='${prefix}/bin'
 793            libdir='${prefix}/Resources'
 794            datarootdir='${prefix}/Resources'
 795            pkgdatadir='${datadir}'
 796            mandir='${prefix}/Resources/man'
 797            lyx_install_windows=true ;;
 798     posix) AC_DEFINE(USE_POSIX_PACKAGING, 1, [Define to 1 if LyX should use a POSIX-style file layout])
 799            PACKAGE=lyx${version_suffix}
 800            program_suffix=$version_suffix
 801            pkgdatadir='${datadir}/${PACKAGE}'
 802            default_prefix=$ac_default_prefix
 803            case ${host} in
 804              *cygwin*) lyx_install_cygwin=true ;;
 805              *apple-darwin*) lyx_install_macosx=true ;;
 806            esac
 807            lyx_install_posix=true ;;
 808         haiku) AC_DEFINE(USE_HAIKU_PACKAGING, 1, [Define to 1 if LyX should use a Haiku-style file layout])
 809            PACKAGE=lyx${version_suffix}
 810            program_suffix=$version_suffix
 811            pkgdatadir='${datadir}/${PACKAGE}'
 812            default_prefix=$ac_default_prefix
 813            lyx_install_posix=true ;;
 814     *) AC_MSG_ERROR([unknown packaging type $lyx_use_packaging.]) ;;
 815 esac
 816 AM_CONDITIONAL(INSTALL_MACOSX, $lyx_install_macosx)
 817 AM_CONDITIONAL(INSTALL_WINDOWS, $lyx_install_windows)
 818 AM_CONDITIONAL(INSTALL_CYGWIN, $lyx_install_cygwin)
 819 AM_CONDITIONAL(INSTALL_POSIX, $lyx_install_posix)
 820 AC_SUBST(pkgdatadir)
 821 AC_SUBST(program_suffix)
 822 ])
 823
 824
 825 ## ------------------------------------------------------------------------
 826 ## Check whether mkdir() is mkdir or _mkdir, and whether it takes
 827 ## one or two arguments.
 828 ##
 829 ## http://ac-archive.sourceforge.net/C_Support/ac_func_mkdir.html
 830 ## ------------------------------------------------------------------------
 831 ##
 832 AC_DEFUN([AC_FUNC_MKDIR],
 833 [AC_CHECK_FUNCS([mkdir _mkdir])
 834 AC_CACHE_CHECK([whether mkdir takes one argument],
 835                [ac_cv_mkdir_takes_one_arg],
 836 [AC_TRY_COMPILE([
 837 #include <sys/stat.h>
 838 #if HAVE_UNISTD_H
 839 #  include <unistd.h>
 840 #endif
 841 ], [mkdir (".");],
 842 [ac_cv_mkdir_takes_one_arg=yes], [ac_cv_mkdir_takes_one_arg=no])])
 843 if test x"$ac_cv_mkdir_takes_one_arg" = xyes; then
 844   AC_DEFINE([MKDIR_TAKES_ONE_ARG], 1,
 845             [Define if mkdir takes only one argument.])
 846 fi
 847 ])
 848
 849
 850 dnl Set VAR to the canonically resolved absolute equivalent of PATHNAME,
 851 dnl (which may be a relative path, and need not refer to any existing
 852 dnl entity).
 853
 854 dnl On Win32-MSYS build hosts, the returned path is resolved to its true
 855 dnl native Win32 path name, (but with slashes, not backslashes).
 856
 857 dnl On any other system, it is simply the result which would be obtained
 858 dnl if PATHNAME represented an existing directory, and the pwd command was
 859 dnl executed in that directory.
 860 AC_DEFUN([MSYS_AC_CANONICAL_PATH],
 861 [ac_dir="$2"
 862  ( exec 2>/dev/null; cd / && pwd -W ) | grep ':' >/dev/null &&
 863     ac_pwd_w="pwd -W" || ac_pwd_w=pwd
 864  until ac_val=`exec 2>/dev/null; cd "$ac_dir" && $ac_pwd_w`
 865  do
 866    ac_dir=`AS_DIRNAME(["$ac_dir"])`
 867  done
 868  ac_dir=`echo "$ac_dir" | sed 's?^[[./]]*??'`
 869  ac_val=`echo "$ac_val" | sed 's?/*$[]??'`
 870  $1=`echo "$2" | sed "s?^[[./]]*$ac_dir/*?$ac_val/?"'
 871    s?/*$[]??'`
 872 ])
 873
 874 dnl this is used by the macro blow to general a proper config.h.in entry
 875 m4_define([LYX_AH_CHECK_DECL],
 876 [AH_TEMPLATE(AS_TR_CPP(HAVE_DECL_$1),
 877   [Define if you have the prototype for function `$1'])])dnl`
 878
 879 dnl Check things are declared in headers to avoid errors or warnings.
 880 dnl Called like LYX_CHECK_DECL(function, header1 header2...)
 881 dnl Defines HAVE_DECL_{FUNCTION}
 882 AC_DEFUN([LYX_CHECK_DECL],
 883 [LYX_AH_CHECK_DECL($1)
 884 for ac_header in $2
 885 do
 886   AC_MSG_CHECKING([if $1 is declared by header $ac_header])
 887   AC_EGREP_HEADER($1, $ac_header,
 888       [AC_MSG_RESULT(yes)
 889        AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_DECL_$1))
 890        break],
 891       [AC_MSG_RESULT(no)])
 892 done])
 893
 894 dnl this is used by the macro below to generate a proper config.h.in entry
 895 m4_define([LYX_AH_CHECK_DEF],
 896 [AH_TEMPLATE(AS_TR_CPP(HAVE_DEF_$1),
 897   [Define to 1 if `$1' is defined in `$2'])])dnl'
 898
 899 dnl Check whether name is defined in header by using it in codesnippet.
 900 dnl Called like LYX_CHECK_DEF(name, header, codesnippet)
 901 dnl Defines HAVE_DEF_{NAME}
 902 AC_DEFUN([LYX_CHECK_DEF],
 903 [LYX_AH_CHECK_DEF($1, $2)
 904  AC_MSG_CHECKING([whether $1 is defined by header $2])
 905  save_CPPFLAGS=$CPPFLAGS
 906  CPPFLAGS="$AM_CPPFLAGS $CPPFLAGS"
 907  save_CXXFLAGS=$CXXFLAGS
 908  CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
 909  AC_LANG_PUSH(C++)
 910  AC_TRY_COMPILE([#include <$2>], [$3],
 911      lyx_have_def_name=yes,
 912      lyx_have_def_name=no)
 913  AC_LANG_POP(C++)
 914  CXXFLAGS=$save_CXXFLAGS
 915  CPPFLAGS=$save_CPPFLAGS
 916  AC_MSG_RESULT($lyx_have_def_name)
 917  if test "x$lyx_have_def_name" = xyes; then
 918    AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_DEF_$1))
 919  fi
 920 ])
 921
 922 dnl Extract the single digits from PACKAGE_VERSION and make them available.
 923 dnl Defines LYX_MAJOR_VERSION, LYX_MINOR_VERSION, LYX_RELEASE_LEVEL,
 924 dnl LYX_RELEASE_PATCH (possibly equal to 0), LYX_DIR_VER, and LYX_USERDIR_VER.
 925 AC_DEFUN([LYX_SET_VERSION_INFO],
 926 [lyx_major=`echo $PACKAGE_VERSION | sed -e 's/[[.]].*//'`
 927  lyx_patch=`echo $PACKAGE_VERSION | sed -e "s/^$lyx_major//" -e 's/^.//'`
 928  lyx_minor=`echo $lyx_patch | sed -e 's/[[.]].*//'`
 929  lyx_patch=`echo $lyx_patch | sed -e "s/^$lyx_minor//" -e 's/^.//'`
 930  lyx_release=`echo $lyx_patch | sed -e 's/[[^0-9]].*//'`
 931  lyx_patch=`echo $lyx_patch | sed -e "s/^$lyx_release//" -e 's/^[[.]]//' -e 's/[[^0-9]].*//'`
 932  test "x$lyx_patch" = "x" && lyx_patch=0
 933  lyx_dir_ver=LYX_DIR_${lyx_major}${lyx_minor}x
 934  lyx_userdir_ver=LYX_USERDIR_${lyx_major}${lyx_minor}x
 935  AC_SUBST(LYX_MAJOR_VERSION,$lyx_major)
 936  AC_SUBST(LYX_MINOR_VERSION,$lyx_minor)
 937  AC_SUBST(LYX_RELEASE_LEVEL,$lyx_release)
 938  AC_SUBST(LYX_RELEASE_PATCH,$lyx_patch)
 939  AC_SUBST(LYX_DIR_VER,"$lyx_dir_ver")
 940  AC_SUBST(LYX_USERDIR_VER,"$lyx_userdir_ver")
 941 ])
 942