]> git.lyx.org Git - lyx.git/blobdiff - config/lyxinclude.m4
Require gcc 4.6
[lyx.git] / config / lyxinclude.m4
index 45b40e325a5b73de05d062b034320afca046ddec..c43ae99d8020080158f5592536421f9624263409 100644 (file)
@@ -143,6 +143,20 @@ AC_DEFUN([LYX_PROG_CLANG],
 #endif
 ],
 [lyx_cv_prog_clang=yes ; CLANG=yes], [lyx_cv_prog_clang=no ; CLANG=no])])
+if test $CLANG = yes ; then
+  AC_CACHE_CHECK([for clang version],
+    [lyx_cv_clang_version],
+    [clang_noversion=no
+     AC_COMPUTE_INT(clang_major,__clang_major__,,[clang_noversion_=yes])
+     AC_COMPUTE_INT(clang_minor,__clang_minor__,,[clang_noversion_=yes])
+     AC_COMPUTE_INT(clang_patchlevel,__clang_patchlevel__,,[clang_noversion_=yes])
+     if test $clang_noversion = yes ; then
+       clang_version=unknown
+     else
+       clang_version=$clang_major.$clang_minor.$clang_patchlevel
+     fi
+     lyx_cv_clang_version=$clang_version])
+fi
 ])
 
 
@@ -176,9 +190,10 @@ dnl the extra cxx11 flags have to be passed to the preprocessor. They are
 dnl not plainly added to AM_CPPFLAGS because then the objc compiler (mac)
 dnl would fail.
 AC_DEFUN([LYX_CXX_USE_REGEX],
-[lyx_std_regex=no
- if test $lyx_use_cxx11 = yes; then
-   save_CPPFLAGS=$CPPFLAGS
+[AC_ARG_ENABLE(std-regex,
+  AC_HELP_STRING([--enable-std-regex],[use std::regex instead of boost::regex (default is autodetected)]),
+  [lyx_std_regex=$enableval],
+  [save_CPPFLAGS=$CPPFLAGS
    # we want to pass -std=c++11 to clang/cpp if necessary
    CPPFLAGS="$AM_CPPFLAGS $1 $CPPFLAGS"
    save_CXXFLAGS=$CXXFLAGS
@@ -194,13 +209,12 @@ AC_DEFUN([LYX_CXX_USE_REGEX],
        dnl <regex> in gcc is unusable in versions less than 4.9.0
        dnl see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631
        case $gxx_version in
-         4.0*|4.1*|4.2*|4.3*|4.4*|4.5*|4.6*|4.7*|4.8*) lyx_std_regex=no ;;
+         4.6*|4.7*|4.8*) lyx_std_regex=no ;;
          *) ;;
        esac
      fi
-   fi
-   AC_MSG_RESULT([$lyx_std_regex])
- fi
+     AC_MSG_RESULT([$lyx_std_regex])
+   fi])
 
  if test $lyx_std_regex = yes ; then
   lyx_flags="$lyx_flags std-regex"
@@ -298,10 +312,6 @@ case $enable_optimization in
     *) lyx_optim=${enable_optimization};;
 esac
 
-AC_ARG_ENABLE(cxx11,
-  AC_HELP_STRING([--disable-cxx11],[disable C++11 mode (default: enabled for known good compilers)]),,
-  enable_cxx11=auto;)
-
 AC_ARG_ENABLE(assertions,
   AC_HELP_STRING([--enable-assertions],[add runtime sanity checks in the program]),,
   [AS_CASE([$build_type], [dev*|pre*], [enable_assertions=yes],
@@ -321,7 +331,8 @@ if test x$GXX = xyes; then
     gxx_version=`${CXX} -dumpversion`
     CXX_VERSION="($gxx_version)"
   else
-    gxx_version=clang
+    gxx_version=clang-$clang_version
+    CXX_VERSION="($clang_version)"
   fi
 
   AM_CXXFLAGS="$lyx_optim"
@@ -344,7 +355,8 @@ if test x$GXX = xyes; then
       AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra"
   fi
   case $gxx_version in
-      2.*|3.*) AC_ERROR([gcc 4.x is required]);;
+      2.*|3.*) AC_ERROR([gcc >= 4.6 is required]);;
+      4.0*|4.1*|4.2*|4.3*|4.4*|4.5*) AC_ERROR([gcc >= 4.6 is required]);;
   esac
   if test x$enable_stdlib_debug = xyes ; then
     dnl FIXME: for clang/libc++, one should define _LIBCPP_DEBUG2=0
@@ -357,21 +369,18 @@ if test x$GXX = xyes; then
         ;;
     esac
   fi
-  dnl enable_cxx11 can be yes/no/auto.
-  dnl By default, it is auto and we enable C++11 when possible
-  if test x$enable_cxx11 != xno ; then
     case $gxx_version in
-      4.0*|4.1*|4.2*)
-         if test x$enable_cxx11 = xyes; then
-            AC_ERROR([There is no C++11 support in gcc 4.2 or older])
-         fi;;
-      4.3*|4.4*|4.5*|4.6*)
+      4.6*)
         dnl Note that this will define __GXX_EXPERIMENTAL_CXX0X__.
         dnl The source code relies on that.
         cxx11_flags="-std=c++0x";;
-      clang)
+      clang-3.0*|clang-3.1*|clang-3.2*|clang-3.3*)
         dnl presumably all clang versions support c++11.
-       dnl the deprecated-register warning is very annoying with Qt4.x right now.
+       dnl boost contains pragmas that are annoying on older clang versions
+        cxx11_flags="-std=c++11 -Wno-unknown-pragmas";;
+      clang*)
+        dnl the more recent versions support the deprecated-register warning,
+        dnl which  is very annoying with Qt4.x right now.
         cxx11_flags="-std=c++11"
         AM_CXXFLAGS="$AM_CXXFLAGS -Wno-deprecated-register";;
       *)
@@ -379,18 +388,14 @@ if test x$GXX = xyes; then
                 [cxx11_flags="-std=gnu++11"],
                 [cxx11_flags="-std=c++11"]);;
     esac
-    # cxx11_flags is useful when running preprocessor alone 
+    # cxx11_flags is useful when running preprocessor alone
     # (see detection of regex).
     AM_CXXFLAGS="$cxx11_flags $AM_CXXFLAGS"
-  fi
 fi
 
 LYX_CXX_CXX11
-if test $lyx_use_cxx11 = yes; then
-  if test x$GXX = xyes; then
-    dnl We still use auto_ptr, which is obsoleted. Shut off the warnings.
-    AM_CXXFLAGS="$AM_CXXFLAGS -Wno-deprecated-declarations"
-  fi
+if test $lyx_use_cxx11 = no; then
+  AC_ERROR([A C++11 compatible compiler is required])
 fi
 LYX_CXX_USE_REGEX([$cxx11_flags])
 ])
@@ -407,46 +412,51 @@ AC_DEFUN([LYX_USE_INCLUDED_BOOST],[
        AC_MSG_RESULT([$lyx_cv_with_included_boost])
        if test x$lyx_cv_with_included_boost = xyes ; then
            BOOST_INCLUDES='-I$(top_srcdir)/3rdparty/boost'
-           BOOST_LIBS='$(top_builddir)/3rdparty/boost/liblyxboost.a'
+           if test $lyx_std_regex = yes ; then
+             BOOST_LIBS=""
+           else
+             BOOST_LIBS='$(top_builddir)/3rdparty/boost/liblyxboost.a'
+           fi
        else
-           AC_LANG_PUSH(C++)
-           save_LIBS=$LIBS
-
-           AC_MSG_CHECKING([for multithreaded boost libraries])
-           LIBS="$save_LIBS -lboost_signals-mt $LIBTHREAD"
-           AC_LINK_IFELSE(
-               [AC_LANG_PROGRAM([#include <boost/signal.hpp>],
-                       [boost::signal<void ()> s;])],
+           BOOST_INCLUDES=
+           if test $lyx_std_regex = yes ; then
+             BOOST_LIBS=""
+           else
+             AC_LANG_PUSH(C++)
+             save_LIBS=$LIBS
+
+             AC_MSG_CHECKING([for multithreaded boost libraries])
+             LIBS="$save_LIBS -lboost_regex-mt $LIBTHREAD"
+             AC_LINK_IFELSE(
+               [AC_LANG_PROGRAM([#include <boost/regex.hpp>],
+                       [boost::regex reg;])],
                [AC_MSG_RESULT([yes])
                 BOOST_MT="-mt"],
                [AC_MSG_RESULT([no])
                 AC_MSG_CHECKING([for plain boost libraries])
-                LIBS="$save_LIBS -lboost_signals"
+                LIBS="$save_LIBS -lboost_regex"
                 AC_LINK_IFELSE(
-                    [AC_LANG_PROGRAM([#include <boost/signal.hpp>],
-                            [boost::signal<void ()> s;])],
+                    [AC_LANG_PROGRAM([#include <boost/regex.hpp>],
+                            [boost::regex reg;])],
                     [AC_MSG_RESULT([yes])
                      BOOST_MT=""],
                     [AC_MSG_RESULT([no])
                      AC_MSG_ERROR([cannot find suitable boost library (do not use --without-included-boost)])
                 ])
-           ])
-           LIBS=$save_LIBS
-           AC_LANG_POP(C++)
-           BOOST_INCLUDES=
-           if test $lyx_std_regex = yes ; then
-             BOOST_LIBS="-lboost_signals${BOOST_MT}"
-           else
-             BOOST_LIBS="-lboost_regex${BOOST_MT} -lboost_signals${BOOST_MT}"
-           fi
-
-           dnl In general, system boost libraries are incompatible with
-           dnl the use of stdlib-debug in libstdc++. See ticket #9736 for
-           dnl details.
-           if test $enable_stdlib_debug = "yes" ; then
+             ])
+             LIBS=$save_LIBS
+             AC_LANG_POP(C++)
+
+             dnl In general, system boost libraries are incompatible with
+             dnl the use of stdlib-debug in libstdc++. See ticket #9736 for
+             dnl details.
+             if test $enable_stdlib_debug = "yes" ; then
                LYX_WARNING([Compiling LyX with stdlib-debug and system boost libraries may lead to
    crashes. Consider using --disable-stdlib-debug or removing
    --without-included-boost.])
+             fi
+
+             BOOST_LIBS="-lboost_regex${BOOST_MT}"
            fi
        fi
        AC_SUBST(BOOST_INCLUDES)
@@ -454,6 +464,70 @@ AC_DEFUN([LYX_USE_INCLUDED_BOOST],[
 ])
 
 
+dnl Usage: LYX_USE_INCLUDED_ICONV : select if the included iconv should
+dnl        be used.
+AC_DEFUN([LYX_USE_INCLUDED_ICONV],[
+  AC_MSG_CHECKING([whether to use included iconv library])
+  AC_ARG_WITH(included-iconv,
+    [AC_HELP_STRING([--without-included-iconv], [do not use the iconv lib supplied with LyX, try to find one in the system directories - compilation will abort if nothing suitable is found])],
+    [lyx_cv_with_included_iconv=$withval],
+    [lyx_cv_with_included_iconv=no])
+  AM_CONDITIONAL(USE_INCLUDED_ICONV, test x$lyx_cv_with_included_iconv = xyes)
+  AC_MSG_RESULT([$lyx_cv_with_included_iconv])
+  if test x$lyx_cv_with_included_iconv = xyes ; then
+dnl Some bits from libiconv configure.ac to avoid a nested configure call:
+    AC_EILSEQ
+    AC_TYPE_MBSTATE_T
+    AC_CHECK_FUNCS([getc_unlocked mbrtowc wcrtomb mbsinit setlocale])
+dnl Ymbstate_t is used if HAVE_WCRTOMB || HAVE_MBRTOWC, see 3rdparty/libiconv/1.14/lib/loop_wchar.h.
+    if test $ac_cv_func_wcrtomb = yes || test $ac_cv_func_mbrtowc = yes; then
+      USE_MBSTATE_T=1
+    else
+      USE_MBSTATE_T=0
+    fi
+    AC_SUBST([USE_MBSTATE_T])
+    AC_CACHE_CHECK([whether <wchar.h> is standalone],
+      [gl_cv_header_wchar_h_standalone],
+      [AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM(
+          [[#include <wchar.h>
+            wchar_t w;]],
+          [[]])],
+        [gl_cv_header_wchar_h_standalone=yes],
+        [gl_cv_header_wchar_h_standalone=no])])
+    if test $gl_cv_header_wchar_h_standalone = yes; then
+      BROKEN_WCHAR_H=0
+    else
+      BROKEN_WCHAR_H=1
+    fi
+    AC_SUBST([BROKEN_WCHAR_H])
+dnl we want const correctness
+    AC_DEFINE_UNQUOTED([ICONV_CONST], [const],
+      [Define as const if the declaration of iconv() needs const.])
+    ICONV_CONST=const
+    AC_SUBST([ICONV_CONST])
+dnl we build a static lib
+    DLL_VARIABLE=
+    AC_SUBST([DLL_VARIABLE])
+    ICONV_INCLUDES='-I$(top_srcdir)/3rdparty/libiconv/1.14 -I$(top_builddir)/3rdparty/libiconv'
+    ICONV_LIBS='\$(top_builddir)/3rdparty/libiconv/liblyxiconv.a'
+    ICONV_ICONV_H_IN=3rdparty/libiconv/iconv.h:3rdparty/libiconv/1.14/include/iconv.h.in
+  else
+    ICONV_INCLUDES=
+    AM_ICONV
+    if test "$am_cv_func_iconv" = no; then
+      AC_MSG_ERROR([cannot find required library iconv.])
+    else
+      ICONV_LIBS="$LIBICONV"
+    fi
+    ICONV_ICONV_H_IN=
+  fi
+  AC_SUBST(ICONV_INCLUDES)
+  AC_SUBST(ICONV_LIBS)
+  AC_SUBST(ICONV_ICONV_H_IN)
+])
+
+
 dnl Usage: LYX_USE_INCLUDED_ZLIB : select if the included zlib should
 dnl        be used.
 AC_DEFUN([LYX_USE_INCLUDED_ZLIB],[
@@ -465,7 +539,7 @@ AC_DEFUN([LYX_USE_INCLUDED_ZLIB],[
   AM_CONDITIONAL(USE_INCLUDED_ZLIB, test x$lyx_cv_with_included_zlib = xyes)
   AC_MSG_RESULT([$lyx_cv_with_included_zlib])
   if test x$lyx_cv_with_included_zlib = xyes ; then
-    ZLIB_INCLUDES='-I$(top_srcdir)/3rdparty/zlib/1.2.8'
+    ZLIB_INCLUDES='-I$(top_srcdir)/3rdparty/zlib/1.2.8 -I$(top_builddir)/3rdparty/zlib'
     ZLIB_LIBS='$(top_builddir)/3rdparty/zlib/liblyxzlib.a'
     mkdir -p 3rdparty/zlib
 dnl include standard config.h for HAVE_UNISTD_H
@@ -630,7 +704,8 @@ AC_ARG_WITH(packaging,
   [lyx_use_packaging="$withval"], [
   case $host in
     *-apple-darwin*) lyx_use_packaging=macosx ;;
-    *-pc-mingw32*) lyx_use_packaging=windows ;;
+    *-pc-mingw*) lyx_use_packaging=windows ;;
+    *-mingw32*) lyx_use_packaging=windows ;;
     *haiku*) lyx_use_packaging=haiku ;;
     *) lyx_use_packaging=posix ;;
   esac])