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This file provides platform specific portability notes which don't belong in README.txt. Usually ImageMagick compiles fine according to the procedures described in README.txt, but sometimes a platform related oddity causes a failure. 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 ImageMagick 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 CC=cc CFLAGS="-O2 -OPT:Olimit=0" CXX=CC \ CXXFLAGS="-LANG:std -Wl,-woff,84 -O2" CXXCPP="CC -LANG:std -E" \ ./configure --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 ImageMagick 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 ImageMagick. Solution Either reboot the system (which automatically runs ldconfig) or execute /sbin/ldconfig -m ${PREFIX}/lib where ${PREFIX} is the prefix used when configuring ImageMagick (default /usr/local). Digital Unix and OSF/1 ====================== Problem Digital Unix provides an outdated JPEG shared library as part of the system. Indications ImageMagick 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 Solaris 2.X ============ Problem An outdated delegate library is used rather than the one just installed.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 o Failure to link due to unresolved symbols o Failure to run properly o 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 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 ImageMagick fails to link or load TIFF files. Solution o 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 o 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. AIX 5.X ============ Problem The builkd dependacy files are not created. Indications The build fails with missing .deps/source.PLO errors. Solution Add --disable-dependency-tracking to your configure command line.