CMake Platform Dependent Issues

Specific Platforms

Linux

• IA64 Issues

Mac OSX

• Bundles and Frameworks
• http://www.kernelthread.com/mac/apme/optimizations/
• http://0xfe.blogspot.com/2006/03/how-os-x-executes-applications.html

Windows

• Borland Compiler Issues

• MinGW Compiler Issues

• Wacom Compiler Issues

OS Specific Programs

Platform	System Info	OS Distribution Version
Linux	uname -a
HP-UX	uname -a
AIX	uname -a
SunOS	uname -a
IRIX	hinv, uname -a
Max OSX / Darwin	system_profiler, uname -a	About This Mac, /usr/bin/sw_ver
Cygwin	uname -a
Windows	ver	ver

The Platforms / Compilers Table

Platform	Compilers	Macros	List Dependencies	List Symbols	Trace Syscal/Signal	Runtime Library Path
Linux	gcc, g++, icc	__linux	ldd program	nm	strace	LD_LIBRARY_PATH
HP-UX	cc, aCC	__hpux	chatr program	nm		SHLIB_PATH (32), LD_LIBRARY_PATH (64)
AIX	xlc, xlC	_AIX	dump -H program	nm		LIBPATH
SunOS	cc, CC	__sparc	ldd program	nm		LD_LIBRARY_PATH (32), LD_LIBRARY_PATH_64 (64)
IRIX	cc, CC	__sgi	ldd program			LD_LIBRARY_PATH (o32), LD_LIBRARYN32_PATH (n32), LD_LIBRARY64_PATH (64)
Max OSX / Darwin	gcc, g++	__APPLE__	otool -L program	nm	ktrace -f outfile program; kdump outfile	DYLD_LIBRARY_PATH
Cygwin	gcc, g++	__CYGWIN__, _WIN32	depends program.exe	nm		PATH
Windows	Visual Studio 6, cl	_WIN32	depends program.exe	dumpbin		PATH
	Visual Studio 7, cl		depends program.exe †
	Visual Studio 7.1, cl		depends program.exe †

• † In order for depends to be installed, the "Win32 Platform SDK Tool" needs to be selected when installing Visual Studio (See Determining Which DLLs to Redistribute).

This is a useful reference for predefined macros: http://predef.sourceforge.net/precomp.html

Architecture Modes

Compiler	Command	Languages	Architecture Flags	Macros
GNU	gcc	C			__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__
	g++	C++
SGI MIPSpro	cc	C	-o32, -n32, -64		_COMPILER_VERSION, _MIPS_SIM==_ABIO32 (o32), _MIPS_SIM==_ABIN32 (n32), _MIPS_SIM==_ABI64 (64)
	CC	C++
SunPro	cc	C	-xarch=...	__SUNPRO_C	#include <sys/isa_defs.h>: _ILP32 (32), _LP64 (64)
	CC	C++		__SUNPRO_CC
HP	cc	C	+DD64		__LP64__ (64)
	aCC	C++		__HP_aCC
IBM VisualAge	xlc	C	-q32, -q64	__IBMC__
	xlC	C++		__IBMCPP__

Compiler Options and Flags

Compiler	Full Warnings	No Warnings	Warnings as Errors	Suppress Warning #n	Warning #n as Error
gcc	-W -Wall -Wshadow	-w	-Werror	-Wno-<warning-name>
MIPS Pro	-fullwarn	-w or -woffall or -woff all	-w2	-woff (#n)[,n0..n1,...] or -diag_suppress (#n)[,n0..n1,...]	-diag_error (#n)[,n0..n1,...]
icc	-Wall -w2 -Wcheck	-w	-Werror	-wd(#n)[,arg2,..argn]	-we(#n)[,arg2,..argn]
bcc32	-w+	-w-	-g1	-w-(#n)
xlc	-qlanglv=ansi or -qflag=w:w	-w or -qflag=e:e	-qhalt=w	-qsuppress=(#n)[:arg2:..argn]
xlC	-qlanglv=ansi or -qflag=w:w	-w or -qflag=e:e	-qhalt=w	-qsuppress=(#n)[:arg2:..argn]	-qhaltonmsg=(#n)[,arg2,..argn]
VS6: cl	/W4	/w	/WX
VS7-8: cl	/Wall /Wp64	/w	/WX	/wd(#n)	/we(#n)
Sun cc		-w	-errwarn=%all	-erroff=<warning-tag>[,arg2,..argn]	-errwarn=<warning-tag>[,arg2,..argn] (use -errtags=yes to see tags)
HP cc	+w1	-w or +w3		+W (#n)[,arg2,..argn]	+We (#n)[,arg2,..argn]
HP aCC	+w	-w		+W(#n)[,arg2,..argn]	+We(#n)[,arg2,..argn]
wcl386	-wx	-w=0	-we	-wcd=(#n)	-wce=(#n)

• More platform specific information can be found in ROSETTA STONE platforms table (Mostly for system administrators)

• Another even more complete table: Using static and shared libraries across platforms (For various compiler flags and options)

Debugging Tips

Using special debug libraries on various systems

Platform	Operation
Debian GNU/Linux	export LD_LIBRARY_PATH=/usr/lib/debug
Mac OS X	export DYLD_IMAGE_SUFFIX=_debug

The gdbrun Script for UNIX-like Platforms

The following is an extremely useful script that will run any command line in a gdb debugger. Put this text in an executable file called "gdbrun":

#!/bin/sh

extra_text=""
if [ "$1" == "--break-main" ]; then
  extra_text="break main"
  shift
fi

EXEC="$1"

shift

run_text="run"
for a in "$@"; do
  run_text="${run_text} \"$a\""
done

TMPFILE=/tmp/gdbrun.$$.$#.tmp
cat > ${TMPFILE} <<EOF
${extra_text}
${run_text}
EOF

gdb -x ${TMPFILE} "${EXEC}"
rm -f "${TMPFILE}"

Then one may debug a test like this:

gdbrun /path/to/myexe --some-arg --some-other-arg

Notes about this script:

• It supports spaces in argument names (note the for loop)
• Takes extra argument --break-main, which causes the program to stop once all the libraries are loaded
• It always run debugger, even when program exits normally
• Cannot be used with MPI or any other system that runs your program from a shell script

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