RE: How to enable Mudflap in gcc 4.x?

["Deepen Mantri" <Deepen dot Mantri at kpitcummins dot com>]

On 4th June 2007 at 07:24:37 Frank Eigler wrote:

>First thing is to get past that autoconf error.  Check your linker
>script for the default entry point symbol's name, and give it to
>libmudflap/configure.ac (then regenerate configure).
>Next, overcome build problems (if any) to the extent that a
>libmudflap.a gets compiled.


I was successful in generating libmudflap.a for sh-elf target by 
adding "_start" as entry point symbol's name in configure.ac. 
 

>Then, start running the test suite.  
Running "make check" in /gcc/sh-elf/libmudflap/ directory present 
in the build folder results in:

/////////////////////////////////////////////////////////////////
.
.
/home/naveenh/build/gcc/sh-elf/./libmudflap/.libs/libmudflap.a(mf-heuris
tics.o):
In function `__mf_heuristic_check':^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/mf-heuristics.c:161: 
Undefined reference to `__start'^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/mf-heuristics.c:161: 
Undefined reference to `__end'^M
collect2: ld returned 1 exit status^M
compiler exited with status 1 
output is:
/home/naveenh/build/gcc/sh-elf/./libmudflap/.libs/libmudflap.a(mf-heuris
tics.o): In function `__mf_heuristic_check':^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/mf-heuristics.c:161: 
Undefined reference to `__start'^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/mf-heuristics.c:161: 
Undefined reference to `__end'^M
collect2: ld returned 1 exit status^M

Executing on host: /home/naveenh/build/gcc/gcc/xgcc
-B/home/naveenh/build/gcc/gcc/ -ggdb3 -DDEBUG_ASSERT
-I/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite
-I/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/.. -I..
-L/home/naveenh/build/gcc/sh-elf/./libmudflap/.libs
/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/libmudflap.c/
fail1-frag.c
-fmudflap -lmudflap
-L/home/naveenh/build/gcc/sh-elf/./libmudflap/testsuite -lm   -m1 -o
./fail1-frag.exe    (timeout = 300)
/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/libmudflap.c/
fail1-frag.c:1:19:
error: stdio.h: No such file or directory^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/libmudflap.c/
fail1-frag.c:2:20:
error: stdlib.h: No such file or directory^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/libmudflap.c/
fail1-frag.c:3:20:
error: string.h: No such file or directory^M
compiler exited with status 1
output is:
/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/libmudflap.c/
fail1-frag.c:1:19:
error: stdio.h: No such file or directory^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/libmudflap.c/
fail1-frag.c:2:20:
error: stdlib.h: No such file or directory^M
/home/naveenh/src/gcc-4.3-20070302/libmudflap/testsuite/libmudflap.c/
fail1-frag.c:3:20:
error: string.h: No such file or directory^M 
.
.
.
////////////////////////////////////////////////////////////////////////
//

>[..]so at this point you might as well start compiling
>your own smaller code with -fmudflap and see what happens.

Compiling a simple C code with -fmudflap and -lmudflap options gives
following errors:

///////////////////////////////////////////////////////////
/home/naveenh/prefix/lib/gcc/sh-elf/4.3.0/../../../../sh-elf/lib/libc.a(
lib_a-syscalls.o): In function `__setup_argv_for_main':
/home/naveenh/src/newlib-1.15.0/newlib/libc/sys/sh/syscalls.c:210:
undefined reference to `___wrap_main'
/home/naveenh/prefix/lib/gcc/sh-elf/4.3.0/../../../../sh-elf/lib/libc.a(
lib_a-syscalls.o): In function `__setup_argv_and_call_main':
/home/naveenh/src/newlib-1.15.0/newlib/libc/sys/sh/syscalls.c:218: 
undefined reference to `___wrap_main'
collect2: ld returned 1 exit status
////////////////////////////////////////////////////////////

How to remove these errors?


Regards,
Deepen Mantri

KPIT Cummins InfoSystems Ltd.
Pune, India

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