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The flashrom makefile wants to redirect both stdout and stderr to 

/dev/null for one compile test.
The old variant of using &>/dev/null works on bash and zsh, but not on
dash and tcsh. dash and tcsh interpret it as "background command and
truncate /dev/null" which is not what we want. >& works on tcsh and
bash, but it is not POSIX compliant.
Since make uses /bin/sh and /bin/sh has to be POSIX compliant, we can
use the POSIX variant of stderr and stdout redirection.

>/dev/null 2>&1
is POSIX compliant. This is specified in SuSv3, Shell Command Language,
sections 2.7.2 and 2.7.6.

Signed-off-by: Stephan Guilloux <stephan.guilloux@free.fr>
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Ward Vandewege <ward@gnu.org>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4211 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stephan Guilloux 2009-04-25 22:07:28 +00:00 committed by Carl-Daniel Hailfinger
parent dcce5210c7
commit baa4374cad
1 changed files with 1 additions and 1 deletions
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2
util/flashrom/Makefile
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@ -65,7 +65,7 @@ pciutils:
echo "struct pci_access *pacc;"; \
echo "int main(int argc, char **argv)"; \
echo "{ pacc = pci_alloc(); return 0; }"; ) > .test.c )
@$(CC) $(CFLAGS) .test.c -o .test $(LDFLAGS) &>/dev/null && \
@$(CC) $(CFLAGS) .test.c -o .test $(LDFLAGS) >/dev/null 2>&1 && \
echo "found." || ( echo "not found."; echo; \
echo "Please install pciutils-devel and zlib-devel."; \
echo "See README for more information."; echo; \