view acinclude.m4 @ 399:a3912193ce69 tip

Default branch is now named default on git as well as hg, in case we ever want to switch to mirroring in the other direction
author Chris Cannam
date Thu, 27 Aug 2020 15:57:37 +0100
parents 9d547101e7cd
children
line wrap: on
line source

AC_DEFUN([SV_MODULE_REQUIRED],
[
SV_MODULE_MODULE=$1
SV_MODULE_VERSION_TEST="$2"
SV_MODULE_HEADER=$3
SV_MODULE_LIB=$4
SV_MODULE_FUNC=$5
SV_MODULE_HAVE=HAVE_$(echo $1 | tr '[a-z]' '[A-Z]')
SV_MODULE_FAILED=1
if test -n "$$1_LIBS" ; then
   AC_MSG_NOTICE([User set ${SV_MODULE_MODULE}_LIBS explicitly, skipping test for $SV_MODULE_MODULE])
   CXXFLAGS="$CXXFLAGS $$1_CFLAGS"
   LIBS="$LIBS $$1_LIBS"
   SV_MODULE_FAILED=""
fi
if test -z "$SV_MODULE_VERSION_TEST" ; then
   SV_MODULE_VERSION_TEST=$SV_MODULE_MODULE
fi
if test -n "$SV_MODULE_FAILED" && test -n "$PKG_CONFIG"; then
   PKG_CHECK_MODULES($1,[$SV_MODULE_VERSION_TEST],[HAVES="$HAVES $SV_MODULE_HAVE";CXXFLAGS="$CXXFLAGS $$1_CFLAGS";LIBS="$LIBS $$1_LIBS";SV_MODULE_FAILED=""],[AC_MSG_NOTICE([Failed to find required module $SV_MODULE_MODULE using pkg-config, trying again by old-fashioned means])])
fi
if test -n "$SV_MODULE_FAILED"; then
   AC_CHECK_HEADER([$SV_MODULE_HEADER],[HAVES="$HAVES $SV_MODULE_HAVE"],[AC_MSG_ERROR([Failed to find header $SV_MODULE_HEADER for required module $SV_MODULE_MODULE])])
   if test -n "$SV_MODULE_LIB"; then
     AC_CHECK_LIB([$SV_MODULE_LIB],[$SV_MODULE_FUNC],[LIBS="$LIBS -l$SV_MODULE_LIB"],[AC_MSG_ERROR([Failed to find library $SV_MODULE_LIB for required module $SV_MODULE_MODULE])])
   fi
fi
])

AC_DEFUN([SV_MODULE_OPTIONAL],
[
SV_MODULE_MODULE=$1
SV_MODULE_VERSION_TEST="$2"
SV_MODULE_HEADER=$3
SV_MODULE_LIB=$4
SV_MODULE_FUNC=$5
SV_MODULE_HAVE=HAVE_$(echo $1 | tr '[a-z]' '[A-Z]')
SV_MODULE_FAILED=1
if test -n "$$1_LIBS" ; then
   AC_MSG_NOTICE([User set ${SV_MODULE_MODULE}_LIBS explicitly, skipping test for $SV_MODULE_MODULE])
   CXXFLAGS="$CXXFLAGS $$1_CFLAGS"
   LIBS="$LIBS $$1_LIBS"
   SV_MODULE_FAILED=""
fi
if test -z "$SV_MODULE_VERSION_TEST" ; then
   SV_MODULE_VERSION_TEST=$SV_MODULE_MODULE
fi
if test -n "$SV_MODULE_FAILED" && test -n "$PKG_CONFIG"; then
   PKG_CHECK_MODULES($1,[$SV_MODULE_VERSION_TEST],[HAVES="$HAVES $SV_MODULE_HAVE";CXXFLAGS="$CXXFLAGS $$1_CFLAGS";LIBS="$LIBS $$1_LIBS";SV_MODULE_FAILED=""],[AC_MSG_NOTICE([Failed to find optional module $SV_MODULE_MODULE using pkg-config, trying again by old-fashioned means])])
fi
if test -n "$SV_MODULE_FAILED"; then
   AC_CHECK_HEADER([$SV_MODULE_HEADER],[HAVES="$HAVES $SV_MODULE_HAVE";SV_MODULE_FAILED=""],[AC_MSG_NOTICE([Failed to find header $SV_MODULE_HEADER for optional module $SV_MODULE_MODULE])])
   if test -z "$SV_MODULE_FAILED"; then
      if test -n "$SV_MODULE_LIB"; then
           AC_CHECK_LIB([$SV_MODULE_LIB],[$SV_MODULE_FUNC],[LIBS="$LIBS -l$SV_MODULE_LIB"],[AC_MSG_NOTICE([Failed to find library $SV_MODULE_LIB for optional module $SV_MODULE_MODULE])])
      fi
   fi
fi
])

# Check for Qt.  The only part of Qt we use directly is qmake.

AC_DEFUN([SV_CHECK_QT],
[
AC_REQUIRE([AC_PROG_CXX])

if test x$QMAKE = x ; then
   	AC_CHECK_PROG(QMAKE, qmake-qt5, $QTDIR/bin/qmake-qt5,,$QTDIR/bin/)
fi
if test x$QMAKE = x ; then
   	AC_CHECK_PROG(QMAKE, qt5-qmake, $QTDIR/bin/qt5-qmake,,$QTDIR/bin/)
fi
if test x$QMAKE = x ; then
   	AC_CHECK_PROG(QMAKE, qmake, $QTDIR/bin/qmake,,$QTDIR/bin/)
fi
if test x$QMAKE = x ; then
	AC_CHECK_PROG(QMAKE, qmake.exe, $QTDIR/bin/qmake.exe,,$QTDIR/bin/)
fi
if test x$QMAKE = x ; then
   	AC_CHECK_PROG(QMAKE, qmake-qt5, qmake-qt5,,$PATH)
fi
if test x$QMAKE = x ; then
   	AC_CHECK_PROG(QMAKE, qt5-qmake, qt5-qmake,,$PATH)
fi
if test x$QMAKE = x ; then
   	AC_CHECK_PROG(QMAKE, qmake, qmake,,$PATH)
fi
if test x$QMAKE = x ; then
   	AC_MSG_ERROR([
Failed to find the required qmake-qt5 or qmake program.  Please
ensure you have the necessary Qt5 development files installed, and
if necessary set QTDIR to the location of your Qt5 installation.
])
fi

# Suitable versions of qmake should print out something like:
#
#   QMake version 2.01a
#   Using Qt version 4.6.3 in /usr/lib
#
# This may be translated, so we check only for the numbers (2.x and 4.x
# in that order).
#
QMAKE_VERSION_OUTPUT=`$QMAKE -v`
case "$QMAKE_VERSION_OUTPUT" in
     *5.*) ;;
     *) AC_MSG_WARN([
 *** The version of qmake found in "$QMAKE" looks like it might be
     from the wrong version of Qt (Qt5 is required).  Please check
     that this is the correct version of qmake for Qt5 builds.
])
esac

case "`uname`" in
     *Darwin*) QMAKE="$QMAKE -spec macx-g++";;
esac

])

# From autoconf archive:

# ============================================================================
#  http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html
# ============================================================================
#
# SYNOPSIS
#
#   AX_CXX_COMPILE_STDCXX_11([ext|noext],[mandatory|optional])
#
# DESCRIPTION
#
#   Check for baseline language coverage in the compiler for the C++11
#   standard; if necessary, add switches to CXXFLAGS to enable support.
#
#   The first argument, if specified, indicates whether you insist on an
#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
#   -std=c++11).  If neither is specified, you get whatever works, with
#   preference for an extended mode.
#
#   The second argument, if specified 'mandatory' or if left unspecified,
#   indicates that baseline C++11 support is required and that the macro
#   should error out if no mode with that support is found.  If specified
#   'optional', then configuration proceeds regardless, after defining
#   HAVE_CXX11 if and only if a supporting mode is found.
#
# LICENSE
#
#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
#   Copyright (c) 2014 Alexey Sokolov <sokolov@google.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [[
  template <typename T>
    struct check
    {
      static_assert(sizeof(int) <= sizeof(T), "not big enough");
    };

    struct Base {
    virtual void f() {}
    };
    struct Child : public Base {
    virtual void f() override {}
    };

    typedef check<check<bool>> right_angle_brackets;

    int a;
    decltype(a) b;

    typedef check<int> check_type;
    check_type c;
    check_type&& cr = static_cast<check_type&&>(c);

    auto d = a;
    auto l = [](){};
]])

AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl
  m4_if([$1], [], [],
        [$1], [ext], [],
        [$1], [noext], [],
        [m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_11])])dnl
  m4_if([$2], [], [ax_cxx_compile_cxx11_required=true],
        [$2], [mandatory], [ax_cxx_compile_cxx11_required=true],
        [$2], [optional], [ax_cxx_compile_cxx11_required=false],
        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX_11])])
  AC_LANG_PUSH([C++])dnl
  ac_success=no
  AC_CACHE_CHECK(whether $CXX supports C++11 features by default,
  ax_cv_cxx_compile_cxx11,
  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
    [ax_cv_cxx_compile_cxx11=yes],
    [ax_cv_cxx_compile_cxx11=no])])
  if test x$ax_cv_cxx_compile_cxx11 = xyes; then
    ac_success=yes
  fi

  m4_if([$1], [noext], [], [dnl
  if test x$ac_success = xno; then
    for switch in -std=gnu++11 -std=gnu++0x; do
      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
      AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
                     $cachevar,
        [ac_save_CXXFLAGS="$CXXFLAGS"
         CXXFLAGS="$CXXFLAGS $switch"
         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
          [eval $cachevar=yes],
          [eval $cachevar=no])
         CXXFLAGS="$ac_save_CXXFLAGS"])
      if eval test x\$$cachevar = xyes; then
        CXXFLAGS="$CXXFLAGS $switch"
        ac_success=yes
        break
      fi
    done
  fi])

  m4_if([$1], [ext], [], [dnl
  if test x$ac_success = xno; then
    for switch in -std=c++11 -std=c++0x; do
      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
      AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
                     $cachevar,
        [ac_save_CXXFLAGS="$CXXFLAGS"
         CXXFLAGS="$CXXFLAGS $switch"
         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
          [eval $cachevar=yes],
          [eval $cachevar=no])
         CXXFLAGS="$ac_save_CXXFLAGS"])
      if eval test x\$$cachevar = xyes; then
        CXXFLAGS="$CXXFLAGS $switch"
        ac_success=yes
        break
      fi
    done
  fi])
  AC_LANG_POP([C++])
  if test x$ax_cxx_compile_cxx11_required = xtrue; then
    if test x$ac_success = xno; then
      AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.])
    fi
  else
    if test x$ac_success = xno; then
      HAVE_CXX11=0
      AC_MSG_NOTICE([No compiler with C++11 support was found])
    else
      HAVE_CXX11=1
      AC_DEFINE(HAVE_CXX11,1,
                [define if the compiler supports basic C++11 syntax])
    fi

    AC_SUBST(HAVE_CXX11)
  fi
])


# ===========================================================================
#  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
#   Check whether the given FLAG works with the current language's compiler
#   or gives an error.  (Warnings, however, are ignored)
#
#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
#   success/failure.
#
#   If EXTRA-FLAGS is defined, it is added to the current language's default
#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
#   force the compiler to issue an error when a bad flag is given.
#
#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
#
#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# LICENSE
#
#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved.  This file is offered as-is, without any
#   warranty.

AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS