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| # Build Qt apps with the autotools (Autoconf/Automake).
# M4 macros.
# This file is part of AutoTroll.
# Copyright (C) 2006 Benoit Sigoure <[email protected]>
#
# AutoTroll is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.
#
# In addition, as a special exception, the copyright holders of AutoTroll
# give you unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the macros of
# AutoTroll. You need not follow the terms of the GNU General Public License
# when using or distributing such scripts, even though portions of the text of
# AutoTroll appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes AutoTroll.
#
# This special exception to the GPL applies to versions of AutoTroll
# released by the copyright holders of AutoTroll. Note that people who make
# modified versions of AutoTroll are not obligated to grant this special
# exception for their modified versions; it is their choice whether to do so.
# The GNU General Public License gives permission to release a modified version
# without this exception; this exception also makes it possible to release a
# modified version which carries forward this exception.
# ------------- #
# DOCUMENTATION #
# ------------- #
# Disclaimer: Never tested with anything else than Qt 4.2! Feedback welcome.
# Simply invoke AT_WITH_QT in your configure.ac. AT_WITH_QT can take
# arguments which are documented in depth below. The default arguments are
# equivalent to the default .pro file generated by qmake.
#
# Invoking AT_WITH_QT will do the following:
# - Add a --with-qt option to your configure
# - Find qmake, moc and uic and save them in the make variables $(QMAKE),
# $(MOC), $(UIC).
# - Save the path to Qt in $(QT_PATH)
# - Find the flags to use Qt, that is:
# * $(QT_DEFINES): -D's defined by qmake.
# * $(QT_CFLAGS): CFLAGS as defined by qmake (C?!)
# * $(QT_CXXFLAGS): CXXFLAGS as defined by qmake.
# * $(QT_INCPATH): -I's defined by qmake.
# * $(QT_CPPFLAGS): Same as $(QT_DEFINES) + $(QT_INCPATH)
# * $(QT_LFLAGS): LFLAGS defined by qmake.
# * $(QT_LDFLAGS): Same thing as $(QT_LFLAGS).
# * $(QT_LIBS): LIBS defined by qmake.
#
# You *MUST* invoke $(MOC) and/or $(UIC) where necessary. AutoTroll provides
# you with Makerules to ease this, here is a sample Makefile.am to use with
# AutoTroll which builds the code given in the chapter 7 of the Qt Tutorial:
# http://doc.trolltech.com/4.2/tutorial-t7.html
#
# -------------------------------------------------------------------------
# include $(top_srcdir)/build-aux/autotroll.mk
#
# ACLOCAL_AMFLAGS = -I build-aux
#
# bin_PROGRAMS = lcdrange
# lcdrange_SOURCES = $(BUILT_SOURCES) lcdrange.cpp lcdrange.h main.cpp
# lcdrange_CXXFLAGS = $(QT_CXXFLAGS) $(AM_CXXFLAGS)
# lcdrange_CPPFLAGS = $(QT_CPPFLAGS) $(AM_CPPFLAGS)
# lcdrange_LDFLAGS = $(QT_LDFLAGS) $(LDFLAGS)
# lcdrange_LDADD = $(QT_LIBS) $(LDADD)
#
# BUILT_SOURCES = lcdrange.moc.cpp
# -------------------------------------------------------------------------
#
# Note that your MOC, UIC and QRC files *MUST* be listed manually in
# BUILT_SOURCES. If you name them properly (eg: .moc.cc, .qrc.cc, .ui.cc -- of
# course you can use .cpp or .cxx or .C rather than .cc) AutoTroll will build
# them automagically for you (using implicit rules defined in autotroll.mk).
m4_define([_AUTOTROLL_SERIAL], [m4_translit([
# serial 4
], [#
], [])])
m4_ifdef([AX_INSTEAD_IF], [],
[AC_DEFUN([AX_INSTEAD_IF],
[m4_ifval([$1],
[AC_MSG_WARN([$2]); [$1]],
[AC_MSG_ERROR([$2])])])])
m4_pattern_forbid([^AT_])dnl
m4_pattern_forbid([^_AT_])dnl
# AT_WITH_QT([QT_modules], [QT_config], [QT_misc], [RUN-IF-FAILED], [RUN-IF-OK])
# ------------------------------------------------------------------------------
# Enable Qt support and add an option --with-qt to the configure script.
#
# The QT_modules argument is optional and defines extra modules to enable or
# disable (it's equivalent to the QT variable in .pro files). Modules can be
# specified as follows:
#
# AT_WITH_QT => No argument -> No QT value.
# Qmake sets it to "core gui" by default.
# AT_WITH_QT([xml]) => QT += xml
# AT_WITH_QT([+xml]) => QT += xml
# AT_WITH_QT([-gui]) => QT -= gui
# AT_WITH_QT([xml -gui +sql svg]) => QT += xml sql svg
# QT -= gui
#
# The QT_config argument is also optional and follows the same convention as
# QT_modules. Instead of changing the QT variable, it changes the CONFIG
# variable, which is used to tweak configuration and compiler options.
#
# The last argument, QT_misc (also optional) will be copied as-is the .pro
# file used to guess how to compile Qt apps. You may use it to further tweak
# the build process of Qt apps if tweaking the QT or CONFIG variables isn't
# enough for you.
#
# RUN-IF-FAILED is arbitrary code to execute if Qt cannot be found or if any
# problem happens. If this argument is omitted, then AC_MSG_ERROR will be
# called. RUN-IF-OK is arbitrary code to execute if Qt was successfully found.
AC_DEFUN([AT_WITH_QT],
[AC_REQUIRE([AC_CANONICAL_HOST])dnl
AC_REQUIRE([AC_CANONICAL_BUILD])dnl
AC_REQUIRE([AC_PROG_CXX])dnl
echo "$as_me: this is autotroll.m4[]_AUTOTROLL_SERIAL" >&AS_MESSAGE_LOG_FD
test x"$TROLL" != x && echo 'ViM rox emacs.'
dnl Memo: AC_ARG_WITH(package, help-string, [if-given], [if-not-given])
AC_ARG_WITH([qt],
[AS_HELP_STRING([--with-qt],
[Path to Qt @<:@Look in PATH and /usr/local/Trolltech@:>@])],
[QT_PATH=$withval])
# this is a hack to get decent flow control with 'break'
for _qt_ignored in once; do
# Find Qt.
AC_ARG_VAR([QT_PATH], [Path to the Qt installation])
if test -d /usr/local/Trolltech; then
# Try to find the latest version.
tmp_qt_paths=`echo /usr/local/Trolltech/*/bin | tr ' ' '\n' | sort -nr \
| xargs | sed 's/ */:/g'`
fi
# Path to which recent MacPorts (~v1.7) install Qt4.
test -d /opt/local/libexec/qt4-mac/bin \
&& tmp_qt_paths="$tmp_qt_paths:/opt/local/libexec/qt4-mac/bin"
# Find qmake.
AC_ARG_VAR([QMAKE], [Qt Makefile generator command])
AC_PATH_PROGS([QMAKE], [qmake qmake-qt4 qmake-qt3], [missing],
[$QT_DIR:$QT_PATH:$PATH:$tmp_qt_paths])
if test x"$QMAKE" = xmissing; then
AX_INSTEAD_IF([$4], [Cannot find qmake in your PATH. Try using --with-qt.])
break
fi
# Find moc (Meta Object Compiler).
AC_ARG_VAR([MOC], [Qt Meta Object Compiler command])
AC_PATH_PROGS([MOC], [moc moc-qt4 moc-qt3], [missing],
[$QT_PATH:$PATH:$tmp_qt_paths])
if test x"$MOC" = xmissing; then
AX_INSTEAD_IF([$4],
[Cannot find moc (Meta Object Compiler) in your PATH. Try using --with-qt.])
break
fi
# Find uic (User Interface Compiler).
AC_ARG_VAR([UIC], [Qt User Interface Compiler command])
AC_PATH_PROGS([UIC], [uic uic-qt4 uic-qt3 uic3], [missing],
[$QT_PATH:$PATH:$tmp_qt_paths])
if test x"$UIC" = xmissing; then
AX_INSTEAD_IF([$4],
[Cannot find uic (User Interface Compiler) in your PATH. Try using --with-qt.])
break
fi
# Find rcc (Qt Resource Compiler).
AC_ARG_VAR([RCC], [Qt Resource Compiler command])
AC_PATH_PROGS([RCC], [rcc], [false], [$QT_PATH:$PATH:$tmp_qt_paths])
if test x"$UIC" = xfalse; then
AC_MSG_WARN([Cannot find rcc (Qt Resource Compiler) in your PATH.\
Try using --with-qt.])
fi
AC_MSG_CHECKING([whether host operating system is Darwin])
at_darwin=no
at_qmake_args=
case $host_os in
darwin*)
at_darwin=yes
at_qmake_args='-spec macx-g++'
;;
esac
AC_MSG_RESULT([$at_darwin])
# If we don't know the path to Qt, guess it from the path to qmake.
if test x"$QT_PATH" = x; then
QT_PATH=`dirname "$QMAKE"`
fi
if test x"$QT_PATH" = x; then
AX_INSTEAD_IF([$4],
[Cannot find the path to your Qt install. Use --with-qt.])
break
fi
AC_SUBST([QT_PATH])
# Get ready to build a test-app with Qt.
if mkdir conftest.dir && cd conftest.dir; then :; else
AX_INSTEAD_IF([$4], [Cannot mkdir conftest.dir or cd to that directory.])
break
fi
cat >conftest.h <<_ASEOF
#include <QObject>
class Foo: public QObject
{
Q_OBJECT;
public:
Foo();
~Foo() {}
public Q_SLOTS:
void setValue(int value);
Q_SIGNALS:
void valueChanged(int newValue);
private:
int value_;
};
_ASEOF
cat >conftest.cpp <<_ASEOF
#include "conftest.h"
Foo::Foo()
: value_ (42)
{
connect(this, SIGNAL(valueChanged(int)), this, SLOT(setValue(int)));
}
void Foo::setValue(int value)
{
value_ = value;
}
int main()
{
Foo f;
}
_ASEOF
if $QMAKE -project; then :; else
AX_INSTEAD_IF([$4], [Calling $QMAKE -project failed.])
break
fi
# Find the .pro file generated by qmake.
pro_file='conftest.dir.pro'
test -f $pro_file || pro_file=`echo *.pro`
if test -f "$pro_file"; then :; else
AX_INSTEAD_IF([$4], [Can't find the .pro file generated by Qmake.])
break
fi
dnl Tweak the value of QT in the .pro if have been the 1st arg.
m4_ifval([$1], [_AT_TWEAK_PRO_FILE([QT], [$1])])
dnl Tweak the value of CONFIG in the .pro if have been given a 2nd arg.
m4_ifval([$2], [_AT_TWEAK_PRO_FILE([CONFIG], [$2])])
m4_ifval([$3],
[ # Add the extra-settings the user wants to set in the .pro
echo "$3" >>"$pro_file"
])
echo "$as_me:$LINENO: Invoking $QMAKE on $pro_file" >&AS_MESSAGE_LOG_FD
sed 's/^/| /' "$pro_file" >&AS_MESSAGE_LOG_FD
if $QMAKE $at_qmake_args; then :; else
AX_INSTEAD_IF([$4], [Calling $QMAKE $at_qmake_args failed.])
break
fi
# QMake has a very annoying misfeature: sometimes it generates Makefiles
# where all the references to the files from the Qt installation are
# relative. We can't use them as-is because if we take, say, a
# -I../../usr/include/Qt from that Makefile, the flag is invalid as soon
# as we use it in another (sub) directory. So what this perl pass does is
# that it rewrite all relative paths to absolute paths. Another problem
# when building on Cygwin is that QMake mixes paths with blackslashes and
# forward slashes and paths must be handled with extra care because of the
# stupid Windows drive letters.
echo "$as_me:$LINENO: fixing the Makefiles:" Makefile* >&AS_MESSAGE_LOG_FD
cat >fixmk.pl <<\EOF
[use strict;
use Cwd qw(cwd abs_path);
# This variable is useful on Cygwin for the following reason: Say that you are
# in `/' (that is, in fact you are in C:/cygwin, or something like that) if you
# `cd ..' then obviously you remain in `/' (that is in C:/cygwin). QMake
# generates paths that are relative to C:/ (or another driver letter, whatever)
# so the trick to get the `..' resolved properly is to prepend the absolute
# path of the current working directory in a Windows-style. C:/cygwin/../ will
# properly become C:/.
my $d = "";
my $r2a = 0;
my $b2f = 0;
my $cygwin = 0;
if ($^O eq "cygwin") {
$cygwin = 1;
$d = cwd();
$d = `cygpath --mixed '$d'`;
chomp($d);
$d .= "/";
}
sub rel2abs($)
{
my $p = $d . shift;
# print "r2a p=$p";
-e $p || return $p;
if ($cygwin) {
$p = `cygpath --mixed '$p'`;
chomp($p);
}
else {
# Do not use abs_path on Cygwin: it incorrectly resolves the paths that are
# relative to C:/ rather than `/'.
$p = abs_path($p);
}
# print " -> $p\n";
++$r2a;
return $p;
}
# Only useful on Cygwin.
sub back2forward($)
{
my $p = shift;
# print "b2f p=$p";
-e $p || return $p;
$p = `cygpath --mixed '$p'`;
chomp($p);
# print " -> $p\n";
++$b2f;
return $p;
}
foreach my $mk (@ARGV)
{
next if $mk =~ /~$/;
open(MK, $mk) or die("open $mk: $!");
# print "mk=$mk\n";
my $file = join("", <MK>);
close(MK) or die("close $mk: $!");
rename $mk, $mk . "~" or die("rename $mk: $!");
$file =~ s{(?:\.\.[\\/])+(?:[^"'\s:]+)}{rel2abs($&)}gse;
$file =~ s{(?:[a-zA-Z]:[\\/])?(?:[^"\s]+\\[^"\s:]+)+}
{back2forward($&)}gse if $cygwin;
open(MK, ">", $mk) or die("open >$mk: $!");
print MK $file;
close(MK) or die("close >$mk: $!");
print "$mk: updated $r2a relative paths and $b2f backslash-style paths\n";
$r2a = 0;
$b2f = 0;
}]
EOF
perl >&AS_MESSAGE_LOG_FD -w fixmk.pl Makefile* ||
AC_MSG_WARN([failed to fix the Makefiles generated by $QMAKE])
rm -f fixmk.pl
# Try to compile a simple Qt app.
AC_CACHE_CHECK([whether we can build a simple Qt app], [at_cv_qt_build],
[at_cv_qt_build=ko
: ${MAKE=make}
if $MAKE >&AS_MESSAGE_LOG_FD 2>&1; then
at_cv_qt_build='ok, looks like Qt 4'
else
echo "$as_me:$LINENO: Build failed, trying to #include <qobject.h> \
instead" >&AS_MESSAGE_LOG_FD
sed 's/<QObject>/<qobject.h>/' conftest.h > tmp.h && mv tmp.h conftest.h
if $MAKE >&AS_MESSAGE_LOG_FD 2>&1; then
at_cv_qt_build='ok, looks like Qt 3'
else
# Sometimes (such as on Debian) build will fail because Qt hasn't been
# installed in debug mode and qmake tries (by default) to build apps in
# debug mode => Try again in release mode.
echo "$as_me:$LINENO: Build failed, trying to enforce release mode" \
>&AS_MESSAGE_LOG_FD
_AT_TWEAK_PRO_FILE([CONFIG], [+release])
sed 's/<qobject.h>/<QObject>/' conftest.h > tmp.h && mv tmp.h conftest.h
if $MAKE >&AS_MESSAGE_LOG_FD 2>&1; then
at_cv_qt_build='ok, looks like Qt 4, release mode forced'
else
echo "$as_me:$LINENO: Build failed, trying to #include <qobject.h> \
instead" >&AS_MESSAGE_LOG_FD
sed 's/<QObject>/<qobject.h>/' conftest.h >tmp.h && mv tmp.h conftest.h
if $MAKE >&AS_MESSAGE_LOG_FD 2>&1; then
at_cv_qt_build='ok, looks like Qt 3, release mode forced'
else
at_cv_qt_build=ko
echo "$as_me:$LINENO: failed program was:" >&AS_MESSAGE_LOG_FD
sed 's/^/| /' conftest.h >&AS_MESSAGE_LOG_FD
echo "$as_me:$LINENO: failed program was:" >&AS_MESSAGE_LOG_FD
sed 's/^/| /' conftest.cpp >&AS_MESSAGE_LOG_FD
fi # if make with Qt3-style #include and release mode forced.
fi # if make with Qt4-style #include and release mode forced.
fi # if make with Qt3-style #include.
fi # if make with Qt4-style #include.
])dnl end: AC_CACHE_CHECK(at_cv_qt_build)
if test x"$at_cv_qt_build" = xko; then
AX_INSTEAD_IF([$4], [Cannot build a test Qt program])
break
fi
QT_VERSION_MAJOR=`echo "$at_cv_qt_build" | sed 's/[[^0-9]]*//g'`
AC_SUBST([QT_VERSION_MAJOR])
# This sed filter is applied after an expression of the form: /^FOO.*=/!d;
# It starts by removing the beginning of the line, removing references to
# SUBLIBS, removing unnecessary whitespaces at the beginning, and prefixes
# all variable uses by QT_.
qt_sed_filter='s///;
s/$(SUBLIBS)//g;
s/^ *//;
s/\$(\(@<:@A-Z_@:>@@<:@A-Z_@:>@*\))/$(QT_\1)/g'
# Find the Makefile (qmake happens to generate a fake Makefile which invokes
# a Makefile.Debug or Makefile.Release). We we have both, we'll pick the
# Makefile.Release. The reason is that the main difference is that release
# uses -Os and debug -g. We can override -Os by passing another -O but we
# usually don't override -g.
if test -f Makefile.Release; then
at_mfile='Makefile.Release'
else
at_mfile='Makefile'
fi
if test -f $at_mfile; then :; else
AX_INSTEAD_IF([$4], [Cannot find the Makefile generated by qmake.])
break
fi
# Find the DEFINES of Qt (should have been named CPPFLAGS).
AC_CACHE_CHECK([for the DEFINES to use with Qt], [at_cv_env_QT_DEFINES],
[at_cv_env_QT_DEFINES=`sed "/^DEFINES@<:@^A-Z=@:>@*=/!d;$qt_sed_filter" $at_mfile`])
AC_SUBST([QT_DEFINES], [$at_cv_env_QT_DEFINES])
# Find the CFLAGS of Qt (We can use Qt in C?!)
AC_CACHE_CHECK([for the CFLAGS to use with Qt], [at_cv_env_QT_CFLAGS],
[at_cv_env_QT_CFLAGS=`sed "/^CFLAGS@<:@^A-Z=@:>@*=/!d;$qt_sed_filter" $at_mfile`])
AC_SUBST([QT_CFLAGS], [$at_cv_env_QT_CFLAGS])
# Find the CXXFLAGS of Qt.
AC_CACHE_CHECK([for the CXXFLAGS to use with Qt], [at_cv_env_QT_CXXFLAGS],
[at_cv_env_QT_CXXFLAGS=`sed "/^CXXFLAGS@<:@^A-Z=@:>@*=/!d;$qt_sed_filter" $at_mfile`])
AC_SUBST([QT_CXXFLAGS], [$at_cv_env_QT_CXXFLAGS])
# Find the INCPATH of Qt.
AC_CACHE_CHECK([for the INCPATH to use with Qt], [at_cv_env_QT_INCPATH],
[at_cv_env_QT_INCPATH=`sed "/^INCPATH@<:@^A-Z=@:>@*=/!d;$qt_sed_filter" $at_mfile`])
AC_SUBST([QT_INCPATH], [$at_cv_env_QT_INCPATH])
AC_SUBST([QT_CPPFLAGS], ["$at_cv_env_QT_DEFINES $at_cv_env_QT_INCPATH"])
# Find the LFLAGS of Qt (Should have been named LDFLAGS)
AC_CACHE_CHECK([for the LDFLAGS to use with Qt], [at_cv_env_QT_LDFLAGS],
[at_cv_env_QT_LDFLAGS=`sed "/^LFLAGS@<:@^A-Z=@:>@*=/!d;$qt_sed_filter" $at_mfile`])
AC_SUBST([QT_LFLAGS], [$at_cv_env_QT_LDFLAGS])
AC_SUBST([QT_LDFLAGS], [$at_cv_env_QT_LDFLAGS])
# Find the LIBS of Qt.
AC_CACHE_CHECK([for the LIBS to use with Qt], [at_cv_env_QT_LIBS],
[at_cv_env_QT_LIBS=`sed "/^LIBS@<:@^A-Z@:>@*=/!d;$qt_sed_filter" $at_mfile`
if test x$at_darwin = xyes; then
# Fix QT_LIBS: as of today Libtool (GNU Libtool 1.5.23a) doesn't handle
# -F properly. The "bug" has been fixed on 22 October 2006
# by Peter O'Gorman but we provide backward compatibility here.
at_cv_env_QT_LIBS=`echo "$at_cv_env_QT_LIBS" \
| sed 's/^-F/-Wl,-F/;s/ -F/ -Wl,-F/g'`
fi
])
AC_SUBST([QT_LIBS], [$at_cv_env_QT_LIBS])
cd .. && rm -rf conftest.dir
# Run the user code
$5
done # end hack (useless for to be able to use break)
])
# AT_REQUIRE_QT_VERSION(QT_version, RUN-IF-FAILED, RUN-IF-OK)
# -----------------------------------------------------------
# Check (using qmake) that Qt's version "matches" QT_version.
# Must be run AFTER AT_WITH_QT. Requires autoconf 2.60.
#
# RUN-IF-FAILED is arbitrary code to execute if Qt cannot be found or if any
# problem happens. If this argument is omitted, then AC_MSG_ERROR will be
# called. RUN-IF-OK is arbitrary code to execute if Qt was successfully found.
AC_DEFUN([AT_REQUIRE_QT_VERSION],
[ AC_PREREQ([2.60])
# this is a hack to get decent flow control with 'break'
for _qt_ignored in once; do
if test x"$QMAKE" = x; then
AX_INSTEAD_IF([$2],
[\$QMAKE is empty.\
Did you invoke AT@&t@_WITH_QT before AT@&t@_REQUIRE_QT_VERSION?])
break
fi
AC_CACHE_CHECK([for Qt's version], [at_cv_QT_VERSION],
[echo "$as_me:$LINENO: Running $QMAKE --version:" >&AS_MESSAGE_LOG_FD
$QMAKE --version >&AS_MESSAGE_LOG_FD 2>&1
qmake_version_sed=['/^.*\([0-9]\.[0-9]\.[0-9]\).*$/!d;s//\1/']
at_cv_QT_VERSION=`$QMAKE --version 2>&1 | sed "$qmake_version_sed"`])
if test x"$at_cv_QT_VERSION" = x; then
AX_INSTEAD_IF([$2], [Cannot detect Qt's version.])
break
fi
AC_SUBST([QT_VERSION], [$at_cv_QT_VERSION])
AS_VERSION_COMPARE([$QT_VERSION], [$1],
[AX_INSTEAD_IF([$2; break;], [This package requires Qt $1 or above.])])
# Run the user code
$3
done # end hack (useless for to be able to use break)
])
# _AT_TWEAK_PRO_FILE(QT_VAR, VALUE)
# ---------------------------
# @internal. Tweak the variable QT_VAR in the .pro.
# VALUE is an IFS-separated list of value and each value is rewritten
# as follows:
# +value => QT_VAR += value
# -value => QT_VAR -= value
# value => QT_VAR += value
AC_DEFUN([_AT_TWEAK_PRO_FILE],
[ # Tweak the value of $1 in the .pro file for $2.
qt_conf=''
for at_mod in $2; do
at_mod=`echo "$at_mod" | sed 's/^-//; tough
s/^+//; beef
:ough
s/^/$1 -= /;n
:eef
s/^/$1 += /'`
qt_conf="$qt_conf
$at_mod"
done
echo "$qt_conf" | sed 1d >>"$pro_file"
]) |
