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# Platform Notes

- Overview
- Apple OS X (Intel)
- Cygwin
- SGI Irix
- Linux 6.1
- FreeBSD 3.X and 4.X
- Digital Unix and OSF/1
- Solaris 2.X

# Overview

This file provides platform specific portability notes which don't belong in README.txt. Usually GraphicsMagick compiles fine according to the procedures described in README.txt, but sometimes a platform related oddity causes a failure.

# Apple OS X (Intel)

> A GraphicsMagick user submitted these steps for how to get GraphicsMagick up and going on an Intel Mac:

> The first few steps should be done as an administrator, or with proper use of "sudo"

> 1. Install Fink (a package manager). The default setup will create a /sw directory on your main hard drive. It will also make sure /sw/bin is in your path.

> 2. Install the latest X-Code from Apple.

> 3. Make a link in /Developer/SDKs/MacOSX10.4u.sdk/ to /sw:

>    "cd /Developer/SDKs/MacOSX10.4u.sdk; ln -s sw /sw"

> 4. Use Fink, or FinkCommander to install libjpeg and libtiff and any other libraries you might want.

> As a regular user or administrator:

> 5. Download the GM snapshot.

> 6. Unpack and cd into the source directory.

> 7. Set your CFLAGS environment variable to (command varies by shell):

>    "-O -g -isysroot /Developer/SDKs/MacOSX10.4u.sdk/ -arch i386 -I/sw/include/"

> 8. Set your LDFLAGS environment variable to:

>    "-Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk/,-L/sw/lib/"

> 9. I used the following ./configure line:

> > ./configure --prefix=/sw --with-quantum-depth=16 --disable-dependency-tracking \ --with-x=yes --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib/ --without-perl

> 10. Issue make
> 11. Test the binaries as necessary and when satisfied:

> > sudo make install

> 12. start X11 and in a new shell: (or source your .profile or .login)

> > gm display

# Cygwin

> Problem

> > PerlMagick fails to link.

> Indications

> > libperl.a is not found.

> Solution

> > Configure like

> > > ./configure --enable-shared

> > or

> > > ./configure --enable-shared --with-modules

> > Cygwin doesn't normally come with a libperl.a but it does come with the equivalent DLL. Using a shared build gets PerlMagick over the hurdle.

# SGI Irix

> Problem

> > How to successfully configure GraphicsMagick using SGI's commercial compiler (e.g. IRIX C/C++ v7.3.1.X)?

> Indications

> > Compiling C++ code fails with the error: #error directive: This header file requires the -LANG:std option

> Solution

> > Configure like

> > > ./configure CC=cc CFLAGS="-O2 -OPT:Olimit=0" CXX=CC CXXFLAGS="-LANG:std -Wl,-woff,84 -O2" CXXCPP="CC -LANG:std -E" --with-modules --with-threads ...

> > with the following in /etc/compiler.defaults

> > > -DEFAULT:abi=n32:isa=mips3

# Linux 6.1

> Problem

> > When '-rpath /somedir' is added to LDFLAGS in order to tell the linker to apply a run-time linker path, configure fails.

> Indications

> > The configure script prints the error message

> > > checking for executable suffix...
> > >   configure: error: cannot compute EXEEXT:

> > and the error message

> > > gcc: unrecognized option '-rpath'

> > is written to config.log

> Solution

> > Use 'LDFLAGS=-Wl,-rpath,/somedir' instead to pass the options through to the linker.

# FreeBSD 3.X and 4.X

> Problem

> > GraphicsMagick does not run after it is installed. The system does not see an installed shared library until the 'ldconfig' command has been executed (as root) using the correct options.

> Indications

> > System fails to find shared library needed by GraphicsMagick.

> Solution

> > Either reboot the system (which automatically runs ldconfig) or execute

> > > /sbin/ldconfig -m ${PREFIX}/lib

> > where ${PREFIX} is the prefix used when configuring GraphicsMagick (default /usr/local).

# Digital Unix and OSF/1

> Problem

> > Digital Unix provides an outdated JPEG shared library as part of the system.

> Indications

> > GraphicsMagick fails to link.

> Solution

> > Ensure that the JPEG library you installed is used. Be sure to install the JPEG library as a shared library.

# Solaris 2.X

> Problem

> > An outdated delegate library is used rather than the one just installed.

> Indications

> > - Failure to link due to unresolved symbols
> > - Failure to run properly
> > - The command 'ldd which convert' lists the wrong library.

> Solution

> > If the problem library is a shared library (.so extension) then install your own library as a shared library. Then add the required -L and -R options to find your shared library at both link and run time. For example, if your library is is installed in /usr/local/lib:

> > > configure LDFLAGS='-L/usr/local/lib -R/usr/local/lib'

> Problem

> > An outdated libtiff.so (libtiff.so.3) is installed in /usr/openwin/lib. This library may be used by accident rather than the intended libtiff.so, or libtiff.a. In particular, the linker generally considers linking against a shared library before it considers static libraries, so the system libtiff.so may be used even though there is an installed libtiff.a earlier in the linker search path.

> Indications

> > GraphicsMagick fails to link or load TIFF files.

> Solution

> > - Install libtiff as a shared library, and make sure that LDFLAGS contains the required -L and -R options to find your shared library at both link and run time. For example, if libtiff.so is installed in /usr/local/lib:

> >   configure LDFLAGS='-L/usr/local/lib -R/usr/local/lib'

> > or

> > - Remove /usr/openwin/lib/libtiff.so.3. Note that if you take this step, some tools like 'imagetool' and 'pageview' will stop working.

> Problem

> > When using gcc 3.0.X, configure decides that the compiler is insufficient to compile Magick++.

> Indications

> > Fails ISO C++ test.

> Solution

> > The problem is due to gcc provided headers undefining Solaris-provided defines for 64-bit versions of stdio functions. The solution is to either configure with --disable-largefile or edit the installed g++-v3/bits/std_cstdio.h to bracket the offending undefs (for fgetpos, fopen, freopen, fsetpos, & tmpfile) like:

> >     #if _FILE_OFFSET_BITS != 64
> >     #undef fopen
> >     #endif

> > or

> > Install gcc 3.1 (or later) instead.

> Problem

> > A static library was used in a shared library build.

> Indications

> > Linker prints a warning similar to:

> > "ld: fatal: relocations remain against allocatable but non-writable sections"

> Solution

> > All libraries used in a shared library build must also be shared libraries. Check all libraries referenced in the libtool link command line and verify that all of the referenced libraries are indeed shared libraries. All system libraries are available as shared libraries so it is likely that any static library is locally installed.

Copyright (C) 2003 - 2008 GraphicsMagick Group
Copyright (C) 2002 ImageMagick Studio
Copyright (C) 1999 E. I. du Pont de Nemours and Company

This program is covered by multiple licenses, which are described in Copyright.txt. You should have received a copy of Copyright.txt with this package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.