Hi,
I've discovered some odd behaviour with make v3.79.1 as included with the CygWin
development tools package.
When calling ccppc (a PowerPC cross-compiler) via make, any error messages generated
by ccppc do not get printed. It seems like make is somehow redirecting the STDERR
stream so that anything printed to STDERR does not get printed on-screen.
I have tried calling gcc instead of ccppc and saw all expected error messages. I also
tried using a different version of make (v3.74 as shipped with Tornado 2.2) with both
ccppc and gcc. In both cases I saw the expected error messages.
It is only the combination of make 3.79.1 (from Cygwin) and ccppc that appears to
suffer from this issue. Naturally, this is the combination of tools I require. ;-)
The make file I am using contains the following:
---------------------------------------------------------------------------
MY_PPC_COMPILER = ccppc
MY_GNU_COMPILER = gcc
ifeq ($(FOR_PPC), 1)
COMPILE = $(MY_PPC_COMPILER)
else
COMPILE = $(MY_GNU_COMPILER)
endif
all :
$(COMPILE) -c -o client.o client.cpp
---------------------------------------------------------------------------
Note that the file being compiled does not exist. This should thus produce a file not
found error.
The script I am using to call make uses the following commands:
---------------------------------------------------------------------------
echo ======================================
echo Test Cygwin make with GCC
echo ======================================
c:/cygwin/bin/make --debug=v
echo ======================================
echo
echo ======================================
echo Test Cygwin make with CCPPC
echo ======================================
c:/cygwin/bin/make FOR_PPC=1 --debug=v
echo ======================================
echo
echo ======================================
echo Test Tornado make with GCC
echo ======================================
$WIND_BASE/host/x86-win32/bin/make -v
$WIND_BASE/host/x86-win32/bin/make
echo ======================================
echo
echo ======================================
echo Test Tornado make with CCPPC
echo ======================================
$WIND_BASE/host/x86-win32/bin/make FOR_PPC=1 -v
$WIND_BASE/host/x86-win32/bin/make FOR_PPC=1
echo ======================================
echo
echo ======================================
echo Just calling CCPPC without make
echo ======================================
ccppc -c -o client.o client.cpp
echo ======================================
echo
---------------------------------------------------------------------------
I am calling the script via a batch file whose contents are as follows:
---------------------------------------------------------------------------
bash test_make.sh > test_make.log 2>&1
---------------------------------------------------------------------------
The results as captured in test_make.log are:
---------------------------------------------------------------------------
======================================
Test Cygwin make with GCC
======================================
GNU Make version 3.79.1, by Richard Stallman and Roland McGrath.
Built for i686-pc-cygwin
Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Report bugs to <[EMAIL PROTECTED]>.
Reading makefiles...
Reading makefile `makefile'...
Updating goal targets....
Considering target file `all'.
File `all' does not exist.
Finished prerequisites of target file `all'.
Must remake target `all'.
gcc -c -o client.o client.cpp
gcc: client.cpp: No such file or directory
gcc: no input files
make: *** [all] Error 1
======================================
======================================
Test Cygwin make with CCPPC
======================================
GNU Make version 3.79.1, by Richard Stallman and Roland McGrath.
Built for i686-pc-cygwin
Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Report bugs to <[EMAIL PROTECTED]>.
Reading makefiles...
Reading makefile `makefile'...
Updating goal targets....
Considering target file `all'.
File `all' does not exist.
Finished prerequisites of target file `all'.
Must remake target `all'.
ccppc -c -o client.o client.cpp
make: *** [all] Error 1
======================================
======================================
Test Tornado make with GCC
======================================
GNU Make version 3.74 (vpath+), by Richard Stallman and Roland McGrath.
Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 95 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
gcc -c -o client.o client.cpp
gcc: client.cpp: No such file or directory
gcc: no input files
make.exe: *** [all] Error 0x1
======================================
======================================
Test Tornado make with CCPPC
======================================
GNU Make version 3.74 (vpath+), by Richard Stallman and Roland McGrath.
Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 95 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
ccppc -c -o client.o client.cpp
ccppc: client.cpp: No such file or directory
ccppc: No input files
make.exe: *** [all] Error 0x1
======================================
======================================
Just calling CCPPC without make
======================================
ccppc: client.cpp: No such file or directory
ccppc: No input files
======================================
---------------------------------------------------------------------------
As shown by the log file, the expected errors are not printed when ccppc is called
from make 3.79.1. My suspicion is that this a problem with make, though it's quite
possible that this is a ccppc issue, or perhaps a problem with both make and ccppc. I
have verified that the error output from ccppc is printed via STDERR. Interestingly,
the output from gcc is also printed via STDERR.
Any assistance you could provide would be most appreciated.
Thanks,
Chris Whitehead
[ Wireless Software Development Engineer ]
Spectrum Signal Processing Inc.
604.421.5422 ext. 211
[EMAIL PROTECTED]
http://www.spectrumsignal.com
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