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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   AS_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 $build_type in
35     development) lyx_devel_version=yes
36                  LYX_DATE="not released yet" ;;
37     prerelease) lyx_prerelease=yes ;;
38 esac
39
40 AC_SUBST(lyx_devel_version)
41 ])
42
43
44 dnl Define the option to set a LyX version on installed executables and directories
45 dnl
46 dnl
47 AC_DEFUN([LYX_VERSION_SUFFIX],[
48 AC_MSG_CHECKING([for version suffix])
49 dnl We need the literal double quotes in the rpm spec file
50 RPM_VERSION_SUFFIX='""'
51 AC_ARG_WITH(version-suffix,
52   [AS_HELP_STRING([--with-version-suffix@<:@=STR@:>@], install lyx files as lyxSTR (default STR: -AC_PACKAGE_VERSION))],
53   [if test "x$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([$withval])
63 ])
64
65
66 dnl Check whether to configure for Qt4, Qt5, or Qt6. Default is Qt5.
67 dnl
68 AC_DEFUN([LYX_CHECK_QT6],[
69 AC_MSG_CHECKING([whether Qt6 is requested])
70 AC_ARG_ENABLE([qt6],
71   [AS_HELP_STRING([--enable-qt6],[use Qt6 for building])],
72   USE_QT6=$enableval, USE_QT6=no)
73 AC_MSG_RESULT([$USE_QT6])
74 AC_SUBST([USE_QT6])
75 ])
76 dnl
77 AC_DEFUN([LYX_CHECK_QT5],[
78 AC_MSG_CHECKING([whether Qt5 is disabled])
79 AC_ARG_ENABLE([qt5],
80   [AS_HELP_STRING([--disable-qt5],[do not use Qt5 for building])],
81   USE_QT5=$enableval, USE_QT5=yes)
82 if test x$USE_QT5 != xno ; then
83   AC_MSG_RESULT([no])
84 else
85   AC_MSG_RESULT([yes])
86 fi
87 AC_SUBST([USE_QT5])
88 ])
89
90
91 dnl Usage: LYX_WARNING(message)  Displays the warning "message" and sets the
92 dnl flag lyx_warning to yes.
93 AC_DEFUN([LYX_WARNING],[
94 lyx_warning_txt="$lyx_warning_txt
95 == $1
96 "
97 lyx_warning=yes])
98
99
100 dnl Usage: LYX_LIB_ERROR(file,library)  Displays an error message indication
101 dnl  that 'file' cannot be found because 'lib' may be uncorrectly installed.
102 AC_DEFUN([LYX_LIB_ERROR],[
103 AC_MSG_ERROR([cannot find $1. Please check that the $2 library
104    is correctly installed on your system.])])
105
106
107 dnl Usage: LYX_CHECK_WARNINGS  Displays a warning message if a LYX_WARNING
108 dnl   has occurred previously.
109 AC_DEFUN([LYX_CHECK_WARNINGS],[
110 if test x$lyx_warning = xyes; then
111 cat <<EOF
112 === The following minor problems have been detected by configure.
113 === Please check the messages below before running 'make'.
114 === (see the section 'Problems' in the INSTALL file)
115 $lyx_warning_txt
116
117 EOF
118 fi])
119
120
121 dnl LYX_SEARCH_PROG(VARIABLE-NAME,PROGRAMS-LIST,ACTION-IF-FOUND)
122 dnl
123 define(LYX_SEARCH_PROG,[dnl
124 for ac_prog in $2 ; do
125 # Extract the first word of "$ac_prog", so it can be a program name with args.
126   set dummy $ac_prog ; ac_word=$[2]
127   if test -z "[$]$1"; then
128     IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
129     for ac_dir in $PATH; do
130       test -z "$ac_dir" && ac_dir=.
131       if test -f [$ac_dir/$ac_word]; then
132         $1="$ac_prog"
133         break
134       fi
135     done
136     IFS="$ac_save_ifs"
137   fi
138
139   if test -n "[$]$1"; then
140     ac_result=yes
141   else
142     ac_result=no
143   fi
144   ifelse($3,,,[$3])
145   test -n "[$]$1" && break
146 done
147 ])dnl
148
149
150 dnl Usage: LYX_PROG_CLANG: set CLANG to yes if the compiler is clang.
151 AC_DEFUN([LYX_PROG_CLANG],
152 [AC_CACHE_CHECK([whether the compiler is clang],
153                [lyx_cv_prog_clang],
154 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
155 #ifndef __clang__
156             this is not clang
157 #endif
158 ]])],[lyx_cv_prog_clang=yes ; CLANG=yes],[lyx_cv_prog_clang=no ; CLANG=no])])
159 if test $CLANG = yes ; then
160   AC_CACHE_CHECK([for clang version],
161     [lyx_cv_clang_version],
162     [clang_noversion=no
163      AC_COMPUTE_INT(clang_major,__clang_major__,,[clang_noversion_=yes])
164      AC_COMPUTE_INT(clang_minor,__clang_minor__,,[clang_noversion_=yes])
165      AC_COMPUTE_INT(clang_patchlevel,__clang_patchlevel__,,[clang_noversion_=yes])
166      if test $clang_noversion = yes ; then
167        clang_version=unknown
168      else
169        clang_version=$clang_major.$clang_minor.$clang_patchlevel
170      fi
171      lyx_cv_clang_version=$clang_version])
172 fi
173 ])
174
175
176 dnl Usage: LYX_CXX_CXX11_FLAGS(VERSION): add to AM_CXXFLAGS the best flag that
177 dnl selects C++11 mode; gives an error when C++11 mode is not found.
178 dnl VERSION is a list of years to try (e.g. 11 or {14,11}).
179 AC_DEFUN([LYX_CXX_CXX11_FLAGS],
180 [AC_CACHE_CHECK([for a good C++ mode], [lyx_cv_cxx11_flags],
181  [lyx_cv_cxx11_flags=none
182   for flag in `eval echo -std=c++$1 default -std=gnu++$1` ; do
183     if test $flag = default ; then
184       flag=
185     fi
186     save_CPPFLAGS=$CPPFLAGS
187     CPPFLAGS="$AM_CPPFLAGS $CPPFLAGS"
188     save_CXXFLAGS=$CXXFLAGS
189     CXXFLAGS="$flag $AM_CXXFLAGS $CXXFLAGS"
190     dnl sample openmp source code to test
191     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
192        template <typename T>
193        struct check
194        {
195            static_assert(sizeof(int) <= sizeof(T), "not big enough");
196        };
197
198        typedef check<check<bool>> right_angle_brackets;
199
200        class TestDeleted
201        {
202        public:
203            TestDeleted() = delete;
204        };
205
206
207        int a;
208        decltype(a) b;
209
210        typedef check<int> check_type;
211        check_type c;
212        check_type&& cr = static_cast<check_type&&>(c);
213
214        auto d = a;]], [[]])],[lyx_cv_cxx11_flags=$flag; break],[])
215    CXXFLAGS=$save_CXXFLAGS
216    CPPFLAGS=$save_CPPFLAGS
217   done])
218   if test x$lyx_cv_cxx11_flags = xnone ; then
219     AC_MSG_ERROR([Cannot find suitable mode for compiler $CXX])
220   fi
221   AM_CXXFLAGS="$lyx_cv_cxx11_flags $AM_CXXFLAGS"
222 ])
223
224
225 dnl Usage: LYX_CXX_USE_CALL_ONCE
226 dnl check whether we can use std::call_once and set the
227 dnl LYX_USE_STD_CALL_ONCE macro and conditional accordingly.
228 AC_DEFUN([LYX_CXX_USE_CALL_ONCE],
229 [AC_MSG_CHECKING([for std::call_once availability])
230    save_CPPFLAGS=$CPPFLAGS
231    CPPFLAGS="$AM_CPPFLAGS $CPPFLAGS"
232    save_CXXFLAGS=$CXXFLAGS
233    CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
234    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
235         #include <mutex>
236         static std::once_flag flag;
237      ]], [[
238         std::call_once(flag, [](){ return; });
239    ]])],[lyx_std_call_once=yes],[lyx_std_call_once=no])
240    CXXFLAGS=$save_CXXFLAGS
241    CPPFLAGS=$save_CPPFLAGS
242    AC_MSG_RESULT([$lyx_std_call_once])
243
244  if test $lyx_std_call_once = yes ; then
245   AC_DEFINE([LYX_USE_STD_CALL_ONCE], 1, [define to 1 if std::call_once is supported by the compiler])
246  fi
247  AM_CONDITIONAL([LYX_USE_STD_CALL_ONCE], test $lyx_std_call_once = yes)
248 ])
249
250
251 dnl Usage: LYX_LIB_STDCXX: set lyx_cv_lib_stdcxx to yes if the STL library is libstdc++.
252 AC_DEFUN([LYX_LIB_STDCXX],
253 [AC_CACHE_CHECK([whether STL is libstdc++],
254                [lyx_cv_lib_stdcxx],
255 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include<vector>]], [[
256 #if ! defined(__GLIBCXX__) && ! defined(__GLIBCPP__)
257             this is not libstdc++
258 #endif
259 ]])],[lyx_cv_lib_stdcxx=yes],[lyx_cv_lib_stdcxx=no])])
260 ])
261
262
263 dnl Usage: LYX_LIB_STDCXX_CXX11_ABI: set lyx_cv_lib_stdcxx_cxx11_abi to yes
264 dnl        if the STL library is GNU libstdc++ and the C++11 ABI is used.
265 AC_DEFUN([LYX_LIB_STDCXX_CXX11_ABI],
266 [AC_CACHE_CHECK([whether STL is libstdc++ using the C++11 ABI],
267                [lyx_cv_lib_stdcxx_cxx11_abi],
268 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include<vector>]], [[
269 #if ! defined(_GLIBCXX_USE_CXX11_ABI) || ! _GLIBCXX_USE_CXX11_ABI
270             this is not libstdc++ using the C++11 ABI
271 #endif
272 ]])],[lyx_cv_lib_stdcxx_cxx11_abi=yes],[lyx_cv_lib_stdcxx_cxx11_abi=no])])
273 ])
274
275
276 AC_DEFUN([LYX_PROG_CXX],
277 [AC_REQUIRE([AC_PROG_CXX])
278 AC_REQUIRE([AC_PROG_CXXCPP])
279
280 ### We might want to force the C++ standard.
281 AC_ARG_ENABLE(cxx-mode,
282   AS_HELP_STRING([--enable-cxx-mode],[choose C++ standard (default: 17, 14, then 11)]),,
283   [enable_cxx_mode={17,14,11}]
284 )
285
286 AC_LANG_PUSH(C++)
287 LYX_PROG_CLANG
288 LYX_CXX_CXX11_FLAGS($enable_cxx_mode)
289 LYX_LIB_STDCXX
290 LYX_LIB_STDCXX_CXX11_ABI
291 LYX_CXX_USE_CALL_ONCE
292 AC_LANG_POP(C++)
293
294 if test $lyx_cv_lib_stdcxx = "yes" ; then
295   if test $lyx_cv_lib_stdcxx_cxx11_abi = "yes" ; then
296     AC_DEFINE(USE_GLIBCXX_CXX11_ABI, 1, [use GNU libstdc++ with C++11 ABI])
297   else
298     AC_DEFINE(STD_STRING_USES_COW, 1, [std::string uses copy-on-write])
299   fi
300 else
301   if test $lyx_cv_prog_clang = "yes" ; then
302     AC_DEFINE(USE_LLVM_LIBCPP, 1, [use libc++ provided by llvm instead of GNU libstdc++])
303   fi
304 fi
305
306 ### We might want to get or shut warnings.
307 AC_ARG_ENABLE(warnings,
308   AS_HELP_STRING([--enable-warnings],[tell the compiler to display more warnings]),,
309   [ if test $lyx_devel_version = yes -o $lyx_prerelease = yes && test $GXX = yes ; then
310         enable_warnings=yes;
311     else
312         enable_warnings=no;
313     fi;])
314 if test x$enable_warnings = xyes ; then
315   lyx_flags="$lyx_flags warnings"
316 fi
317
318 ### We might want to disable debug
319 AC_ARG_ENABLE(debug,
320   AS_HELP_STRING([--enable-debug],[enable debug information]),,
321   [AS_CASE([$build_type], [rel*], [enable_debug=no], [enable_debug=yes])]
322 )
323
324 AC_ARG_ENABLE(stdlib-debug,
325   AS_HELP_STRING([--enable-stdlib-debug],[enable debug mode in the standard library]),,
326   [AS_CASE([$build_type], [dev*], [enable_stdlib_debug=yes], 
327           [enable_stdlib_debug=no])]
328 )
329
330 ### set up optimization
331 AC_ARG_ENABLE(optimization,
332     AS_HELP_STRING([--enable-optimization@<:@=ARG@:>@],[enable compiler optimisation]),,
333     enable_optimization=yes;)
334 case $enable_optimization in
335     yes)
336         if test $lyx_devel_version = yes ; then
337             lyx_optim=-O
338         else
339             lyx_optim=-O2
340         fi;;
341     no) lyx_optim=;;
342     *) lyx_optim=${enable_optimization};;
343 esac
344
345 AC_ARG_ENABLE(assertions,
346   AS_HELP_STRING([--enable-assertions],[add runtime sanity checks in the program]),,
347   [AS_CASE([$build_type], [dev*|pre*], [enable_assertions=yes],
348           [enable_assertions=no])]
349 )
350 if test "x$enable_assertions" = xyes ; then
351    lyx_flags="$lyx_flags assertions"
352    AC_DEFINE(ENABLE_ASSERTIONS,1,
353     [Define if you want assertions to be enabled in the code])
354 fi
355
356 # set the compiler options correctly.
357 if test x$GXX = xyes; then
358   dnl clang++ pretends to be g++ 4.2.1; this is not useful
359   if test x$CLANG = xno; then
360     dnl Useful for global version info
361     gxx_version=`${CXX} -dumpversion`
362     case $gxx_version in
363         *.*) ;;
364         *) gxx_version=`${CXX} -dumpfullversion` ;;
365     esac
366     CXX_VERSION="($gxx_version)"
367   else
368     gxx_version=clang-$clang_version
369     CXX_VERSION="($clang_version)"
370   fi
371
372   AM_CXXFLAGS="$lyx_optim $AM_CXXFLAGS"
373   if test x$enable_debug = xyes ; then
374       AM_CXXFLAGS="-g $AM_CXXFLAGS"
375   fi
376   if test $build_type = gprof ; then
377     AM_CXXFLAGS="$AM_CXXFLAGS -pg"
378     AM_LDFLAGS="$AM_LDFLAGS -pg"
379   fi
380   if test $build_type = profiling ; then
381     AM_CXXFLAGS="$AM_CXXFLAGS -fno-omit-frame-pointer"
382   fi
383
384   if test x$USE_QT5 = xyes -o x$USE_QT6 = xyes; then
385       AS_CASE([$host], [*mingw*|*cygwin*], [], [AM_CXXFLAGS="-fPIC $AM_CXXFLAGS"])
386   fi
387   dnl Warnings are for preprocessor too
388   if test x$enable_warnings = xyes ; then
389       AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra"
390       dnl Shut off warning -Wdeprecated-copy, which triggers too much
391       dnl note that g++ always accepts -Wno-xxx, even when -Wxxx is an error.
392       AC_LANG_PUSH(C++)
393       AX_CHECK_COMPILE_FLAG([-Wno-deprecated-copy],
394         [AM_CXXFLAGS="$AM_CXXFLAGS -Wno-deprecated-copy"], [], [-Werror])
395       AC_LANG_POP(C++)
396     fi
397   case $gxx_version in
398       2.*|3.*|4.@<:@0-8@:>@*) AC_MSG_ERROR([gcc >= 4.9 is required]);;
399   esac
400   if test x$enable_stdlib_debug = xyes ; then
401     dnl FIXME: for clang/libc++, one should define _LIBCPP_DEBUG2=0
402     dnl See http://clang-developers.42468.n3.nabble.com/libc-debug-mode-td3336742.html
403     if test x$lyx_cv_lib_stdcxx = xyes ; then
404         lyx_flags="$lyx_flags stdlib-debug"
405         AC_DEFINE(_GLIBCXX_DEBUG, 1, [libstdc++ debug mode])
406         AC_DEFINE(_GLIBCXX_DEBUG_PEDANTIC, 1, [libstdc++ pedantic debug mode])
407         AC_SUBST(STDLIB_DEBUG, "-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC")
408     else
409         enable_stdlib_debug=no
410     fi
411   fi
412 fi
413
414 # Some additional flags may be needed
415 if test x$GXX = xyes; then
416     case $gxx_version in
417       clang-3.0*|clang-3.1*|clang-3.2*|clang-3.3*)
418         dnl boost contains pragmas that are annoying on older clang versions
419         AM_CPPFLAGS="-Wno-unknown-pragmas $AM_CPPFLAGS";;
420       clang*)
421         dnl the more recent versions support the deprecated-register warning,
422         dnl which  is very annoying with Qt4.x right now.
423         AM_CXXFLAGS="$AM_CXXFLAGS -Wno-deprecated-register";;
424     esac
425 fi
426 ])
427
428 dnl Usage: LYX_USE_INCLUDED_NOD : select if the included nod should be used.
429 AC_DEFUN([LYX_USE_INCLUDED_NOD],[
430         AC_MSG_CHECKING([whether to use included nod library])
431         AC_ARG_WITH(included-nod,
432             [AS_HELP_STRING([--without-included-nod], [do not use the nod lib supplied with LyX, try to find one in the system directories - compilation will abort if nothing suitable is found])],
433             [lyx_cv_with_included_nod=$withval],
434             [lyx_cv_with_included_nod=yes])
435         AM_CONDITIONAL(USE_INCLUDED_NOD, test x$lyx_cv_with_included_nod = xyes)
436         AC_MSG_RESULT([$lyx_cv_with_included_nod])
437         if test x$lyx_cv_with_included_nod = xyes ; then
438             lyx_included_libs="$lyx_included_libs nod"
439             NOD_INCLUDES='-I$(top_srcdir)/3rdparty/nod'
440         else
441             NOD_INCLUDES=
442             AC_LANG_PUSH(C++)
443             AC_MSG_CHECKING([for nod library])
444             AC_LINK_IFELSE(
445                 [AC_LANG_PROGRAM([#include <nod.hpp>],
446                     [nod::scoped_connection conn;])],
447                 [AC_MSG_RESULT([yes])],
448                 [AC_MSG_RESULT([no])
449                 AC_MSG_ERROR([cannot find suitable nod library (do not use --without-included-nod)])
450             ])
451             AC_LANG_POP(C++)
452         fi
453         AC_SUBST(NOD_INCLUDES)
454 ])
455
456 dnl Usage: LYX_USE_INCLUDED_BOOST : select if the included boost should
457 dnl        be used.
458 AC_DEFUN([LYX_USE_INCLUDED_BOOST],[
459         AC_MSG_CHECKING([whether to use included boost library])
460         AC_ARG_WITH(included-boost,
461             [AS_HELP_STRING([--with-included-boost], [use the boost lib supplied with LyX])],
462             [lyx_cv_with_included_boost=$withval],
463             [lyx_cv_with_included_boost=no])
464         AM_CONDITIONAL(USE_INCLUDED_BOOST, test x$lyx_cv_with_included_boost = xyes)
465         AC_MSG_RESULT([$lyx_cv_with_included_boost])
466         if test x$lyx_cv_with_included_boost = xno ; then
467             AC_LANG_PUSH(C++)
468             AC_MSG_CHECKING([for boost library])
469             AC_LINK_IFELSE(
470                 [AC_LANG_PROGRAM([#include <boost/crc.hpp>],
471                     [boost::crc_32_type crc;])],
472                 [AC_MSG_RESULT([yes])],
473                 [AC_MSG_RESULT([no])
474                 lyx_cv_with_included_boost=yes
475             ])
476             AC_LANG_POP(C++)
477         fi
478         if test x$lyx_cv_with_included_boost = xyes ; then
479             lyx_included_libs="$lyx_included_libs boost"
480             BOOST_INCLUDES='-I$(top_srcdir)/3rdparty/boost'
481         else
482             BOOST_INCLUDES=
483         fi
484         AC_SUBST(BOOST_INCLUDES)
485 ])
486
487
488 dnl Usage: LYX_USE_INCLUDED_ICONV : select if the included iconv should
489 dnl        be used.
490 AC_DEFUN([LYX_USE_INCLUDED_ICONV],[
491   AC_MSG_CHECKING([whether to use included iconv library])
492   AC_ARG_WITH(included-iconv,
493     [AS_HELP_STRING([--with-included-iconv], [use the iconv lib supplied with LyX instead of the system one])],
494     [lyx_cv_with_included_iconv=$withval],
495     [lyx_cv_with_included_iconv=no])
496   AM_CONDITIONAL(USE_INCLUDED_ICONV, test x$lyx_cv_with_included_iconv = xyes)
497   AC_MSG_RESULT([$lyx_cv_with_included_iconv])
498   if test x$lyx_cv_with_included_iconv = xyes ; then
499   lyx_included_libs="$lyx_included_libs iconv"
500
501 dnl This is hardcoded to make it compile
502     AC_DEFINE([HAVE_WORKING_O_NOFOLLOW], 0, [Define to 1 if O_NOFOLLOW works.])
503
504 dnl Some bits from libiconv configure.ac to avoid a nested configure call:
505     AC_EILSEQ
506     AC_TYPE_MBSTATE_T
507     AC_CHECK_FUNCS([getc_unlocked mbrtowc wcrtomb mbsinit setlocale])
508 dnl Ymbstate_t is used if HAVE_WCRTOMB || HAVE_MBRTOWC, see 3rdparty/libiconv/1.15/lib/loop_wchar.h.
509     if test $ac_cv_func_wcrtomb = yes || test $ac_cv_func_mbrtowc = yes; then
510       USE_MBSTATE_T=1
511     else
512       USE_MBSTATE_T=0
513     fi
514     AC_SUBST([USE_MBSTATE_T])
515     AC_CACHE_CHECK([whether <wchar.h> is standalone],
516       [gl_cv_header_wchar_h_standalone],
517       [AC_COMPILE_IFELSE(
518         [AC_LANG_PROGRAM(
519           [[#include <wchar.h>
520             wchar_t w;]],
521           [[]])],
522         [gl_cv_header_wchar_h_standalone=yes],
523         [gl_cv_header_wchar_h_standalone=no])])
524     if test $gl_cv_header_wchar_h_standalone = yes; then
525       BROKEN_WCHAR_H=0
526     else
527       BROKEN_WCHAR_H=1
528     fi
529     AC_SUBST([BROKEN_WCHAR_H])
530 dnl we want const correctness
531     AC_DEFINE_UNQUOTED([ICONV_CONST], [const],
532       [Define as const if the declaration of iconv() needs const.])
533     ICONV_CONST=const
534     AC_SUBST([ICONV_CONST])
535 dnl we build a static lib
536     DLL_VARIABLE=
537     AC_SUBST([DLL_VARIABLE])
538     ICONV_INCLUDES='-I$(top_srcdir)/3rdparty/libiconv/1.15 -I$(top_builddir)/3rdparty/libiconv'
539     ICONV_LIBS='\$(top_builddir)/3rdparty/libiconv/liblyxiconv.a'
540     ICONV_ICONV_H_IN=3rdparty/libiconv/iconv.h:3rdparty/libiconv/1.15/include/iconv.h.in
541   else
542     ICONV_INCLUDES=
543     AM_ICONV
544     if test "$am_cv_func_iconv" = no; then
545       AC_MSG_ERROR([cannot find required library iconv.])
546     else
547       ICONV_LIBS="$LIBICONV"
548     fi
549     ICONV_ICONV_H_IN=
550   fi
551   AC_SUBST(ICONV_INCLUDES)
552   AC_SUBST(ICONV_LIBS)
553   AC_SUBST(ICONV_ICONV_H_IN)
554 ])
555
556
557 dnl Usage: LYX_USE_INCLUDED_ZLIB : select if the included zlib should
558 dnl        be used.
559 AC_DEFUN([LYX_USE_INCLUDED_ZLIB],[
560   AC_MSG_CHECKING([whether to use included zlib library])
561   AC_ARG_WITH(included-zlib,
562     [AS_HELP_STRING([--with-included-zlib], [use the zlib lib supplied with LyX instead of the system one])],
563     [lyx_cv_with_included_zlib=$withval],
564     [lyx_cv_with_included_zlib=no])
565   AM_CONDITIONAL(USE_INCLUDED_ZLIB, test x$lyx_cv_with_included_zlib = xyes)
566   AC_MSG_RESULT([$lyx_cv_with_included_zlib])
567   if test x$lyx_cv_with_included_zlib = xyes ; then
568     lyx_included_libs="$lyx_included_libs zlib"
569     ZLIB_INCLUDES='-I$(top_srcdir)/3rdparty/zlib/1.2.8 -I$(top_builddir)/3rdparty/zlib'
570     ZLIB_LIBS='$(top_builddir)/3rdparty/zlib/liblyxzlib.a'
571     mkdir -p 3rdparty/zlib
572 dnl include standard config.h for HAVE_UNISTD_H
573     echo "#include <../../config.h>" > 3rdparty/zlib/zconf.h
574 dnl prevent clash with system zlib that might be dragged in by other libs
575     echo "#define Z_PREFIX 1" >> 3rdparty/zlib/zconf.h
576     cat "${srcdir}/3rdparty/zlib/1.2.8/zconf.h.in" >> 3rdparty/zlib/zconf.h
577   else
578     ZLIB_INCLUDES=
579     AC_CHECK_HEADERS(zlib.h,
580       [AC_CHECK_LIB(z, gzopen, [ZLIB_LIBS="-lz"], LYX_LIB_ERROR(libz,zlib))],
581       [LYX_LIB_ERROR(zlib.h,zlib)])
582   fi
583   AC_SUBST(ZLIB_INCLUDES)
584   AC_SUBST(ZLIB_LIBS)
585 ])
586
587
588 dnl Usage: LYX_BUILD_INCLUDED_DTL : select if the included dtl should
589 dnl        be built and installed.
590 AC_DEFUN([LYX_BUILD_INCLUDED_DTL],[
591         AC_MSG_CHECKING([whether to build dv2dt and dt2dv])
592         AC_ARG_WITH(included-dtl,
593             [AS_HELP_STRING([--with-included-dtl], [build and install the dv2dt and dt2dv programs supplied with LyX])],
594             [lyx_cv_with_included_dtl=$withval],
595             [lyx_cv_with_included_dtl=no])
596         AM_CONDITIONAL(BUILD_INCLUDED_DTL, test x$lyx_cv_with_included_dtl = xyes)
597         AC_MSG_RESULT([$lyx_cv_with_included_dtl])
598         if test x$lyx_cv_with_included_dtl = xyes ; then
599             lyx_flags="$lyx_flags build-dtl"
600         fi])
601
602
603 dnl Usage: LYX_CHECK_CALLSTACK_PRINTING: define LYX_CALLSTACK_PRINTING if the
604 dnl        necessary APIs are available to print callstacks.
605 AC_DEFUN([LYX_CHECK_CALLSTACK_PRINTING],
606 [AC_ARG_ENABLE([callstack-printing],
607                [AS_HELP_STRING([--disable-callstack-printing],[do not print a callstack when crashing])],
608                lyx_cv_callstack_printing=$enableval, lyx_cv_callstack_printing=yes)
609
610 if test x"$lyx_cv_callstack_printing" = xyes; then
611   AC_CACHE_CHECK([whether printing callstack is possible],
612                  [lyx_cv_callstack_printing],
613   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
614   #include <execinfo.h>
615   #include <cxxabi.h>
616   ]], [[
617           void* array[200];
618           size_t size = backtrace(array, 200);
619           backtrace_symbols(array, size);
620           int status = 0;
621           abi::__cxa_demangle("abcd", 0, 0, &status);
622   ]])],[],[lyx_cv_callstack_printing=no])])
623 fi
624 if test x"$lyx_cv_callstack_printing" = xyes; then
625   AC_DEFINE([LYX_CALLSTACK_PRINTING], 1,
626             [Define if callstack can be printed])
627   lyx_flags="$lyx_flags callback-printing"
628   AM_LDFLAGS="${AM_LDFLAGS} -rdynamic"
629 fi
630 ])
631
632
633 dnl Usage: LYX_USE_INCLUDED_MYTHES : select if the included MyThes should
634 dnl        be used.
635 AC_DEFUN([LYX_USE_INCLUDED_MYTHES],[
636   AC_ARG_WITH(included-mythes,
637     [AS_HELP_STRING([--with-included-mythes], [force to use the MyThes lib supplied with LyX])],
638     [use_included_mythes=$withval],
639     [use_included_mythes=no])
640   if test x$use_included_mythes != xyes ; then
641     AC_LANG_PUSH(C++)
642     use_included_mythes=yes
643     AC_CHECK_HEADERS([mythes.hxx mythes/mythes.hxx],
644       [mythes_h_location="<$ac_header>"
645        save_LIBS=$LIBS
646        AC_MSG_CHECKING([checking for MyThes library])
647        for ac_lib in mythes mythes-1.2 ; do
648          LIBS="-l$ac_lib $save_LIBS"
649          AC_LINK_IFELSE(
650            [AC_LANG_PROGRAM([#include <cstdio>]
651               [#include $mythes_h_location], [MyThes dummy("idx","dat")])],
652            [MYTHES_LIBS=-l$ac_lib
653             AC_MSG_RESULT([$MYTHES_LIBS])
654             use_included_mythes=no])
655        done
656        if test $use_included_mythes != no ; then
657          AC_MSG_RESULT([not found])
658        fi
659        break])
660     AC_LANG_POP(C++)
661   fi
662   if test $use_included_mythes = yes ; then
663     mythes_h_location="<mythes.hxx>"
664     MYTHES_INCLUDES='-I$(top_srcdir)/3rdparty/mythes/1.2.5/'
665     MYTHES_LIBS='$(top_builddir)/3rdparty/mythes/liblyxmythes.a'
666     lyx_included_libs="$lyx_included_libs mythes"
667   fi
668   AM_CONDITIONAL(USE_INCLUDED_MYTHES, test x$use_included_mythes = xyes)
669   AC_DEFINE_UNQUOTED(MYTHES_H_LOCATION,$mythes_h_location,[Location of mythes.hxx])
670   AC_SUBST(MYTHES_INCLUDES)
671   AC_SUBST(MYTHES_LIBS)
672   AC_MSG_CHECKING([whether to use included MyThes library])
673   AC_MSG_RESULT([$use_included_mythes])
674 ])
675
676
677 dnl Usage: LYX_WITH_DIR(dir-name,desc,dir-var-name,default-value,
678 dnl                       [default-yes-value])
679 dnl  Adds a --with-'dir-name' option (described by 'desc') and puts the
680 dnl  resulting directory name in 'dir-var-name'.
681 AC_DEFUN([LYX_WITH_DIR],[
682   AC_ARG_WITH($1,[AS_HELP_STRING([--with-$1],[specify $2])])
683   AC_MSG_CHECKING([for $2])
684   if test -z "$with_$3"; then
685      AC_CACHE_VAL(lyx_cv_$3, lyx_cv_$3=$4)
686   else
687     test "x$with_$3" = xyes && with_$3=$5
688     lyx_cv_$3="$with_$3"
689   fi
690   AC_MSG_RESULT($lyx_cv_$3)
691 ])
692
693
694 dnl Usage: LYX_LOOP_DIR(value,action)
695 dnl Executes action for values of variable `dir' in `values'. `values' can
696 dnl use ":" as a separator.
697 AC_DEFUN([LYX_LOOP_DIR],[
698 IFS="${IFS=     }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
699 for dir in `eval "echo $1"`; do
700   if test ! "$dir" = NONE; then
701     test ! -d "$dir" && AC_MSG_ERROR(['$dir' is not a directory])
702     $2
703   fi
704 done
705 IFS=$ac_save_ifs
706 ])
707
708
709 dnl Usage: LYX_ADD_LIB_DIR(var-name,dir) Adds a -L directive to variable
710 dnl var-name.
711 AC_DEFUN([LYX_ADD_LIB_DIR],[
712 $1="${$1} -L$2"
713 if test "`(uname) 2>/dev/null`" = SunOS &&
714     uname -r | grep '^5' >/dev/null; then
715   if test $GXX = yes ; then
716     $1="${$1} -Wl[,]-R$2"
717   else
718     $1="${$1} -R$2"
719   fi
720 fi])
721
722
723 dnl Usage: LYX_ADD_INC_DIR(var-name,dir) Adds a -I directive to variable
724 dnl var-name.
725 AC_DEFUN([LYX_ADD_INC_DIR],[$1="${$1} -I$2 "])
726
727 ### Check for a headers existence and location iff it exists
728 ## This is supposed to be a generalised version of LYX_STL_STRING_FWD
729 ## It almost works.  I've tried a few variations but they give errors
730 ## of one sort or other: bad substitution or file not found etc.  The
731 ## actual header _is_ found though and the cache variable is set however
732 ## the reported setting (on screen) is equal to $ac_safe for some unknown
733 ## reason.
734 ## Additionally, autoheader can't figure out what to use as the name in
735 ## the config.h.in file so we need to write our own entries there -- one for
736 ## each header in the form PATH_HEADER_NAME_H
737 ##
738 AC_DEFUN([LYX_PATH_HEADER],
739 [ AC_CHECK_HEADER($1,[
740   ac_tr_safe=PATH_`echo $ac_safe | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
741 ### the only remaining problem is getting the second parameter to this
742 ### AC_CACHE_CACHE to print correctly. Currently it just results in value
743 ### of $ac_safe being printed.
744   AC_CACHE_CHECK([path to $1],[lyx_cv_path2_$ac_safe],
745   [ cat > conftest.$ac_ext <<EOF
746 #line __oline__ "configure"
747 #include "confdefs.h"
748
749 #include <$1>
750 EOF
751 lyx_path_header_path=`(eval "$ac_cpp conftest.$ac_ext") 2>&5 | \
752   grep $1  2>/dev/null | \
753   sed -e 's/.*\(".*$1"\).*/\1/' -e "1q"`
754 eval "lyx_cv_path2_${ac_safe}=\$lyx_path_header_path"
755 rm -f conftest*])
756   AC_DEFINE_UNQUOTED($ac_tr_safe, $lyx_path_header_path, [dummy])])
757 ])
758 ### end of LYX_PATH_HEADER
759
760 ## Check what kind of packaging should be used at install time.
761 ## The default is autodetected.
762 AC_DEFUN([LYX_USE_PACKAGING],
763 [AC_MSG_CHECKING([what packaging should be used])
764 AC_ARG_WITH(packaging,
765   [AS_HELP_STRING([--with-packaging=STR], [set packaging for installation among:
766                             posix, windows, macosx, haiku (default is autodetected)])],
767   [lyx_use_packaging="$withval"], [
768   case $host in
769     *-apple-darwin*) lyx_use_packaging=macosx ;;
770     *-pc-mingw*) lyx_use_packaging=windows ;;
771     *-mingw32*) lyx_use_packaging=windows ;;
772     *haiku*) lyx_use_packaging=haiku ;;
773     *) lyx_use_packaging=posix ;;
774   esac])
775 AC_MSG_RESULT($lyx_use_packaging)
776 lyx_install_posix=false
777 lyx_install_macosx=false
778 lyx_install_cygwin=false
779 lyx_install_windows=false
780 case $lyx_use_packaging in
781    macosx) AC_DEFINE(USE_MACOSX_PACKAGING, 1, [Define to 1 if LyX should use a MacOS X application bundle file layout])
782            PACKAGE=LyX${version_suffix}
783            default_prefix="/Applications/${PACKAGE}.app"
784            AC_SUBST(osx_bundle_program_name,"${program_base_name}")
785            bindir='${prefix}/Contents/MacOS'
786            libdir='${prefix}/Contents/Resources'
787            datarootdir='${prefix}/Contents/Resources'
788            pkgdatadir='${datadir}'
789            mandir='${datadir}/man'
790            lyx_install_macosx=true ;;
791   windows) AC_DEFINE(USE_WINDOWS_PACKAGING, 1, [Define to 1 if LyX should use a Windows-style file layout])
792            PACKAGE=LyX${version_suffix}
793            default_prefix="C:/Program Files/${PACKAGE}"
794            bindir='${prefix}/bin'
795            libdir='${prefix}/Resources'
796            datarootdir='${prefix}/Resources'
797            pkgdatadir='${datadir}'
798            mandir='${prefix}/Resources/man'
799            lyx_install_windows=true ;;
800     posix) AC_DEFINE(USE_POSIX_PACKAGING, 1, [Define to 1 if LyX should use a POSIX-style file layout])
801            PACKAGE=lyx${version_suffix}
802            program_suffix=$version_suffix
803            pkgdatadir='${datadir}/${PACKAGE}'
804            default_prefix=$ac_default_prefix
805            case ${host} in
806              *cygwin*) lyx_install_cygwin=true ;;
807              *apple-darwin*) lyx_install_macosx=true ;;
808            esac
809            lyx_install_posix=true ;;
810         haiku) AC_DEFINE(USE_HAIKU_PACKAGING, 1, [Define to 1 if LyX should use a Haiku-style file layout])
811            PACKAGE=lyx${version_suffix}
812            program_suffix=$version_suffix
813            pkgdatadir='${datadir}/${PACKAGE}'
814            default_prefix=$ac_default_prefix
815            lyx_install_posix=true ;;
816     *) AC_MSG_ERROR([unknown packaging type $lyx_use_packaging.]) ;;
817 esac
818 AM_CONDITIONAL(INSTALL_MACOSX, $lyx_install_macosx)
819 AM_CONDITIONAL(INSTALL_WINDOWS, $lyx_install_windows)
820 AM_CONDITIONAL(INSTALL_CYGWIN, $lyx_install_cygwin)
821 AM_CONDITIONAL(INSTALL_POSIX, $lyx_install_posix)
822 AC_SUBST(pkgdatadir)
823 AC_SUBST(program_suffix)
824 ])
825
826
827 ## ------------------------------------------------------------------------
828 ## Check whether mkdir() is mkdir or _mkdir, and whether it takes
829 ## one or two arguments.
830 ##
831 ## http://ac-archive.sourceforge.net/C_Support/ac_func_mkdir.html
832 ## ------------------------------------------------------------------------
833 ##
834 AC_DEFUN([AC_FUNC_MKDIR],
835 [AC_CHECK_FUNCS([mkdir _mkdir])
836 AC_CACHE_CHECK([whether mkdir takes one argument],
837                [ac_cv_mkdir_takes_one_arg],
838 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
839 #include <sys/stat.h>
840 #if HAVE_UNISTD_H
841 #  include <unistd.h>
842 #endif
843 ]], [[mkdir (".");]])],[ac_cv_mkdir_takes_one_arg=yes],[ac_cv_mkdir_takes_one_arg=no])])
844 if test x"$ac_cv_mkdir_takes_one_arg" = xyes; then
845   AC_DEFINE([MKDIR_TAKES_ONE_ARG], 1,
846             [Define if mkdir takes only one argument.])
847 fi
848 ])
849
850
851 dnl Set VAR to the canonically resolved absolute equivalent of PATHNAME,
852 dnl (which may be a relative path, and need not refer to any existing
853 dnl entity).
854
855 dnl On Win32-MSYS build hosts, the returned path is resolved to its true
856 dnl native Win32 path name, (but with slashes, not backslashes).
857
858 dnl On any other system, it is simply the result which would be obtained
859 dnl if PATHNAME represented an existing directory, and the pwd command was
860 dnl executed in that directory.
861 AC_DEFUN([MSYS_AC_CANONICAL_PATH],
862 [ac_dir="$2"
863  ( exec 2>/dev/null; cd / && pwd -W ) | grep ':' >/dev/null &&
864     ac_pwd_w="pwd -W" || ac_pwd_w=pwd
865  until ac_val=`exec 2>/dev/null; cd "$ac_dir" && $ac_pwd_w`
866  do
867    ac_dir=`AS_DIRNAME(["$ac_dir"])`
868  done
869  ac_dir=`echo "$ac_dir" | sed 's?^[[./]]*??'`
870  ac_val=`echo "$ac_val" | sed 's?/*$[]??'`
871  $1=`echo "$2" | sed "s?^[[./]]*$ac_dir/*?$ac_val/?"'
872    s?/*$[]??'`
873 ])
874
875 dnl this is used by the macro blow to general a proper config.h.in entry
876 m4_define([LYX_AH_CHECK_DECL],
877 [AH_TEMPLATE(AS_TR_CPP(HAVE_DECL_$1),
878   [Define if you have the prototype for function `$1'])])dnl`
879
880 dnl Check things are declared in headers to avoid errors or warnings.
881 dnl Called like LYX_CHECK_DECL(function, header1 header2...)
882 dnl Defines HAVE_DECL_{FUNCTION}
883 AC_DEFUN([LYX_CHECK_DECL],
884 [LYX_AH_CHECK_DECL($1)
885 for ac_header in $2
886 do
887   AC_MSG_CHECKING([if $1 is declared by header $ac_header])
888   AC_EGREP_HEADER($1, $ac_header,
889       [AC_MSG_RESULT(yes)
890        AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_DECL_$1))
891        break],
892       [AC_MSG_RESULT(no)])
893 done])
894
895 dnl this is used by the macro below to generate a proper config.h.in entry
896 m4_define([LYX_AH_CHECK_DEF],
897 [AH_TEMPLATE(AS_TR_CPP(HAVE_DEF_$1),
898   [Define to 1 if `$1' is defined in `$2'])])dnl'
899
900 dnl Check whether name is defined in header by using it in codesnippet.
901 dnl Called like LYX_CHECK_DEF(name, header, codesnippet)
902 dnl Defines HAVE_DEF_{NAME}
903 AC_DEFUN([LYX_CHECK_DEF],
904 [LYX_AH_CHECK_DEF($1, $2)
905  AC_MSG_CHECKING([whether $1 is defined by header $2])
906  save_CPPFLAGS=$CPPFLAGS
907  CPPFLAGS="$AM_CPPFLAGS $CPPFLAGS"
908  save_CXXFLAGS=$CXXFLAGS
909  CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
910  AC_LANG_PUSH(C++)
911  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <$2>]], [[$3]])],[lyx_have_def_name=yes],[lyx_have_def_name=no])
912  AC_LANG_POP(C++)
913  CXXFLAGS=$save_CXXFLAGS
914  CPPFLAGS=$save_CPPFLAGS
915  AC_MSG_RESULT($lyx_have_def_name)
916  if test "x$lyx_have_def_name" = xyes; then
917    AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_DEF_$1))
918  fi
919 ])
920
921 dnl Extract the single digits from PACKAGE_VERSION and make them available.
922 dnl Defines LYX_MAJOR_VERSION, LYX_MINOR_VERSION, LYX_RELEASE_LEVEL,
923 dnl LYX_RELEASE_PATCH (possibly equal to 0), LYX_DIR_VER, and LYX_USERDIR_VER.
924 AC_DEFUN([LYX_SET_VERSION_INFO],
925 [lyx_major=`echo $PACKAGE_VERSION | sed -e 's/[[.]].*//'`
926  lyx_patch=`echo $PACKAGE_VERSION | sed -e "s/^$lyx_major//" -e 's/^.//'`
927  lyx_minor=`echo $lyx_patch | sed -e 's/[[.]].*//'`
928  lyx_patch=`echo $lyx_patch | sed -e "s/^$lyx_minor//" -e 's/^.//'`
929  lyx_release=`echo $lyx_patch | sed -e 's/[[^0-9]].*//'`
930  lyx_patch=`echo $lyx_patch | sed -e "s/^$lyx_release//" -e 's/^[[.]]//' -e 's/[[^0-9]].*//'`
931  test "x$lyx_patch" = "x" && lyx_patch=0
932  lyx_dir_ver=LYX_DIR_${lyx_major}${lyx_minor}x
933  lyx_userdir_ver=LYX_USERDIR_${lyx_major}${lyx_minor}x
934  AC_SUBST(LYX_MAJOR_VERSION,$lyx_major)
935  AC_SUBST(LYX_MINOR_VERSION,$lyx_minor)
936  AC_SUBST(LYX_RELEASE_LEVEL,$lyx_release)
937  AC_SUBST(LYX_RELEASE_PATCH,$lyx_patch)
938  AC_SUBST(LYX_DIR_VER,"$lyx_dir_ver")
939  AC_SUBST(LYX_USERDIR_VER,"$lyx_userdir_ver")
940 ])
941
942 AC_DEFUN([LYX_CHECK_WITH_SAXON],
943 [
944         lyx_use_saxon=true
945         AC_ARG_WITH(saxon, AS_HELP_STRING([--without-saxon],[do not install saxon library (epub export)]))
946         test "$with_saxon" = "no" && lyx_use_saxon=false
947
948         if $lyx_use_saxon ; then
949                 AC_MSG_RESULT(Set to installing internal saxon.)
950         fi
951
952         AM_CONDITIONAL(SAXON_INSTALL, $lyx_use_saxon)
953     ])
954
955 AC_DEFUN([LYX_CHECK_WITH_XSLT_SHEETS],
956 [
957         lyx_use_xslt_stylesheets=true
958         AC_ARG_WITH(xslt-stylesheets, AS_HELP_STRING([--without-xslt-stylesheets],[do not install XSLT Stylesheets (epub export)]))
959         test "$with_xslt_stylesheets" = "no" && lyx_use_xslt_stylesheets=false
960
961         if $lyx_use_xslt_stylesheets ; then
962                 AC_MSG_RESULT(Set to installing XSLT Stylesheets.)
963         fi
964
965         AM_CONDITIONAL(XSLT_SHEETS_INSTALL, $lyx_use_xslt_stylesheets)
966     ])
967