I am trying to install this software and the ./configure went smoothly but the "make" command is giving me several warnings and a few errors which I am not sure how to fix
this is the output of them

Try to run ./configure in the /src directory.

"skylendar-1.7.1"
Compiles with no problems on Slackware 12 and PCLinuxOS 2007 both with Qt-3.3.8
Is it a genuine Arch Qt, you are using ?? Which version ?
It could also be a help showing us 5 lines above where the errors begin.
Sometimes it is possible with 'make | less'
(You could be missing a header or 2)

Probably not possible to run configure elsewhere than the top directory.

Rgds

Not sure what you mean by "Arch Qt, you are using ?? Which version ?" I just know that I am using 64 bit Arch
here is the whole thing


Makefile:847: warning: overriding commands for target `clean-bcheck'
Makefile:825: warning: ignoring old commands for target `clean-bcheck'
Makefile:852: warning: overriding commands for target `bcheck-am'
Makefile:830: warning: ignoring old commands for target `bcheck-am'
Makefile:869: warning: overriding commands for target `clean-bcheck'
Makefile:847: warning: ignoring old commands for target `clean-bcheck'
Makefile:874: warning: overriding commands for target `bcheck-am'
Makefile:852: warning: ignoring old commands for target `bcheck-am'
Makefile:906: warning: overriding commands for target `clean-bcheck'
Makefile:869: warning: ignoring old commands for target `clean-bcheck'
Makefile:911: warning: overriding commands for target `bcheck-am'
Makefile:874: warning: ignoring old commands for target `bcheck-am'
make all-recursive
make[1]: Entering directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1'
Makefile:847: warning: overriding commands for target `clean-bcheck'
Makefile:825: warning: ignoring old commands for target `clean-bcheck'
Makefile:852: warning: overriding commands for target `bcheck-am'
Makefile:830: warning: ignoring old commands for target `bcheck-am'
Makefile:869: warning: overriding commands for target `clean-bcheck'
Makefile:847: warning: ignoring old commands for target `clean-bcheck'
Makefile:874: warning: overriding commands for target `bcheck-am'
Makefile:852: warning: ignoring old commands for target `bcheck-am'
Makefile:906: warning: overriding commands for target `clean-bcheck'
Makefile:869: warning: ignoring old commands for target `clean-bcheck'
Makefile:911: warning: overriding commands for target `bcheck-am'
Makefile:874: warning: ignoring old commands for target `bcheck-am'
Making all in src
make[2]: Entering directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1/src'
Making all in pics
make[3]: Entering directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1/src/pics'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1/src/pics'
make[3]: Entering directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1/src'
if g++ -DHAVE_CONFIG_H -I. -I. -I.. -I/src/pics -I/opt/kde/include -I/opt/qt/include -I. -DQT_THREAD_SUPPORT -D_REENTRANT -Wno-long-long -Wundef -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -Wchar-subscripts -Wall -W -Wpointer-arith -O2 -Wformat-security -Wmissing-format-attribute -Wno-non-virtual-dtor -fno-exceptions -fno-check-new -fno-common -MT editaddmul.o -MD -MP -MF ".deps/editaddmul.Tpo" -c -o editaddmul.o editaddmul.cpp; \
then mv -f ".deps/editaddmul.Tpo" ".deps/editaddmul.Po"; else rm -f ".deps/editaddmul.Tpo"; exit 1; fi
In file included from /opt/qt/include/qvariant.h:42,
from _editaddmul.h:13,
from editaddmul.h:3,
from editaddmul.cpp:1:
/opt/qt/include/qstring.h: In member function ‘char QChar::latin1() const’:
/opt/qt/include/qstring.h:194: warning: conversion to ‘char’ from ‘int’ may alter its value
/opt/qt/include/qstring.h: In member function ‘void QChar::setCell(uchar)’:
/opt/qt/include/qstring.h:219: warning: conversion to ‘ushort’ from ‘int’ may alter its value
/opt/qt/include/qstring.h: In member function ‘void QChar::setRow(uchar)’:
/opt/qt/include/qstring.h:220: warning: conversion to ‘ushort’ from ‘int’ may alter its value
/opt/qt/include/qstring.h: In constructor ‘QChar::QChar(uchar, uchar)’:
/opt/qt/include/qstring.h:264: warning: conversion to ‘ushort’ from ‘int’ may alter its value
/opt/qt/include/qstring.h: In constructor ‘QStringData::QStringData(QChar*, uint, uint)’:
/opt/qt/include/qstring.h:362: warning: conversion to ‘unsigned int:30’ from ‘uint’ may alter its value
/opt/qt/include/qstring.h:362: warning: conversion to ‘unsigned int:30’ from ‘uint’ may alter its value
In file included from /opt/qt/include/qobject.h:45,
from /opt/qt/include/qwidget.h:43,
from /opt/qt/include/qdialog.h:42,
from _editaddmul.h:14,
from editaddmul.h:3,
from editaddmul.cpp:1:
/opt/qt/include/qevent.h: In member function ‘void QDropEvent::setAction(QDropEvent::Action)’:
/opt/qt/include/qevent.h:520: warning: conversion to ‘unsigned char’ from ‘uint’ may alter its value
In file included from /opt/qt/include/qwidget.h:49,
from /opt/qt/include/qdialog.h:42,
from _editaddmul.h:14,
from editaddmul.h:3,
from editaddmul.cpp:1:
/opt/qt/include/qsizepolicy.h: In member function ‘void QSizePolicy::transpose()’:
/opt/qt/include/qsizepolicy.h:122: warning: conversion to ‘uchar’ from ‘uint’ may alter its value
/opt/qt/include/qsizepolicy.h:122: warning: conversion to ‘uchar’ from ‘uint’ may alter its value
editaddmul.cpp: In member function ‘virtual void EditAddMul::OkSlot()’:
editaddmul.cpp:52: error: ‘atof’ was not declared in this scope
editaddmul.cpp:54: error: ‘atof’ was not declared in this scope
make[3]: *** [editaddmul.o] Error 1
make[3]: Leaving directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/link/Docs/Builds/Astro/skylendar-1.7.1'
make: *** [all] Error 2

Well, the Qt used, could be a non Arch package, or self compiled.
To know version try 'moc -v' (answer here = Qt Meta Object Compiler version 26 (Qt 3.3.8)
Or se your list of installed packages if available.
'gcc --version' (gcc (GCC) 4.1.1 20060724 (prerelease) (4.1.1-...)
or the long version : 'gcc -v' (will supply a long answer)
'g++ -v' and 'g++ --version' (my version, g++ (GCC) 4.1.1 20060724)
g++ is used together with Qt, so probably important.

Rgds

ok the output of this command " moc -v" tells me " Qt Meta Object Compiler version 59 (Qt 4.3.4)" so I guess that I need to downgrade my qt or what do I need to do

I wouldn't have guessed that, because configure asks for > qt-3.0 > qt-4.0
meaning a version with a lower number than 4.0
I was sure the reason being gcc-4.3, g++-4.3, (compiles fine with 4.2.3,
Ubuntu 8.04) You didn't mention gcc, g++ ??? versions ?
If you only have kde 4, you will probably also get problems with libkde4-devel.
Its headers are used to build ... later in the compiling, than you have seen.

Solutions, downgrade if you can, carefull, can ruin your system.
Or run it on a small partition with a small distro e.g. PCLosMiniMe2008.

I have gcc (GCC) 4.3.0 so in order for me to compile and install this softawar that I should downgrade

Not necessary to downgrade gcc until it is proven that gcc-4.3,
g++-4 is not working.
The real issue (first) is Qt4 versus Qt3, and probably libkde4-dev.

I wouldn't touch it, its difficult to do.

so can I just reinstall QT3 and uninstall QT4? because I am having allot of issues trying to compile different files so if it is possible to do this I would like to know how

Depends on which desktop, you are using, if kde4, no desktop without qt-4.
If at all using kde, install another as a safe fallback, e.g. xfce
to use while switching qt.

If you have qt4 installed you probably need it (it's not a tipical package that you install by hand, which means that it's probably installed as a dependency for something else).

In gentoo you can have qt-3.x and qt-4.x installed alongside without any problem. I don't have arch installed so I can't tell you how easy or difficult this can be on arch. But on a quick google I found this:

http://www.archlinux.org/news/380/

If I understand correctly, qt-4.x is named as "qt", and qt-3.x is named "qt3". So, you want to install qt3. It should be installable with qt4, otherwise, arch has a serious problem, because kde4 is not really ready for the end user and lots of programs NEED qt-3.x and will not compile against qt-4.x.

Another possibility is that you already have both installed. In that case, the problem is specifying *what* libs do you want to use. For that, you might need to check the correct path for the qt3 libraries, and you might need to pass it as an argument to your program on the ./configure stage. Check ./configure --help to see the available options

Thank you I will check into thoughs