ipo: warning #11015: Warning unknown option -no_compact_unwind

Reference Number :

Version :

Product : 
Intel Compiler for Mac OS* X version 11.1.080

Operating System : 
Mac OS X 10.6.x and Xcode 3.2.x
Problem Description :
Intel Compiler 11.1.080 requires the option -Wl,-no_compact_unwind to be passed to the linker to work around a linker change on Snow Leopard (10.6.x) and Xcode 3.2. This linker option is only supported with the ld available in Xcode 3.2.x.

$ cat report.c
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>

static void report(FILE *fh, const char *prefix, const char *err, va_list params)
char msg[4096];
vsnprintf(msg, sizeof(msg), err, params);
fprintf(fh, " %s%s\n", prefix, msg);

$ cat compile.sh
#!/bin/bash -x

icc -DNDEBUG -mmacosx-version-min=10.6 -Wall -Wno-unused -restrict -I. -o report.c.o -c report.c

icc -mmacosx-version-min=10.6 -Wl,-no_compact_unwind -Wall -Wno-unused -restrict -dynamiclib -headerpad_max_install_names -o libphd.dylib -install_name libphd.dylib report.c.o
ipo: warning #11015: Warning unknown option -no_compact_unwind

Resolution Status :
Even though the compiler issue a warning for the linker option -no_compact_unwind, this option will get pass to linker, and the warning is harmless.  This warning will be removed in a future update.

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