Hi,
Perhaps due to my long and annoying description, one has difficulty in
understanding what the problem I encountered was. Here I would
provide a much shorter description.
GNU Automake generates dependency tree like this in Makefile.in:
[EMAIL PROTECTED]:~/tmp/k$ cat Makefile
a: b
cat b>a
b: c
c: d
date>b
cp b c
[EMAIL PROTECTED]:~/tmp/k$
Its intention is to regenerate `a' when `d' is updated. But this does
not work, since it requires `make' to be executed twice:
[EMAIL PROTECTED]:~/tmp/k$ make
date>b
cp b c
[EMAIL PROTECTED]:~/tmp/k$ make
cat b>a
[EMAIL PROTECTED]:~/tmp/k$
However, I noticed that if the Makefile looks like this:
[EMAIL PROTECTED]:~/tmp/k$ cat Makefile
a: b
cat b>a
b: c
cp c b
c: d
date>c
[EMAIL PROTECTED]:~/tmp/k$
Everything works as expected:
[EMAIL PROTECTED]:~/tmp/k$ touch d
[EMAIL PROTECTED]:~/tmp/k$ make
date>c
cp c b
cat b>a
[EMAIL PROTECTED]:~/tmp/k$
Is this a bug in GNU make, or a bug in GNU Automake?
Regards,
Guanpeng Xu
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