Doing case conversion in a make file ?

Hi,

I use gnu make for most of my make file these days. 
Now I have to change some old code that used the old
IAR DOS 8051 tools. The problem is that the output file names
are all converted to upper case, which causes havoc with the make
rules, since all my input files are lower case filenames. 
Does anyone have a way of getting gnu make to do
a case insensitive compare ?

Regards
   Anton Erasmus

Anton Erasmus <nobody@nowhere.net> wrote:

> I use gnu make for most of my make file these days. 
> Now I have to change some old code that used the old
> IAR DOS 8051 tools. The problem is that the output file names
> are all converted to upper case, which causes havoc with the make
> rules, since all my input files are lower case filenames. 

I don't see why that would cause havoc --- DOS completely ignores
filename case, and so will any version of GNU make ported to DOS.  If
it didn't, that port of GNU make would have to be considered fatally
flawed.

Could you give a more detailed description of the problem?

-- 
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.

"Anton Erasmus" <nobody@nowhere.net> wrote in message
news:2chlf05qp85r897uvu96ug2o17s1u0k7l1@4ax.com...
> I use gnu make for most of my make file these days.
> Now I have to change some old code that used the old
> IAR DOS 8051 tools. The problem is that the output file names
> are all converted to upper case, which causes havoc with the make
> rules, since all my input files are lower case filenames.
> Does anyone have a way of getting gnu make to do
> a case insensitive compare ?

I presume you're using *nix.

1) Why does the case of the old output filenames matter? Aren't you
rebuilding from scratch?

2) What, specifically, is the problem with your makefile?

Steve
http://www.fivetrees.com

In article <EdedndBT4eSQtmbdRVn-hw@nildram.net>, 
steve@NOSPAMTAfivetrees.com says...
> "Anton Erasmus" <nobody@nowhere.net> wrote in message
> news:2chlf05qp85r897uvu96ug2o17s1u0k7l1@4ax.com...
> > I use gnu make for most of my make file these days.
> > Now I have to change some old code that used the old
> > IAR DOS 8051 tools. The problem is that the output file names
> > are all converted to upper case, which causes havoc with the make
> > rules, since all my input files are lower case filenames.
> > Does anyone have a way of getting gnu make to do
> > a case insensitive compare ?
> 
> I presume you're using *nix.
Since he is using DOS tools tht seems less likely.  In fact given the 
problem description is seems most probable to me that he is using one of 
the newer windows variants (NT, 9X etc..).  They have adopted the 
unfortunate case perserving but case insensitive approach.  The GNU tools 
ported to NT generally maintain their case sensitive nature.  A lot of 
the DOS based tools uppercase filenames before opening or creating a file 
which gives no problem when they open an existing lower case file (name) 
but when they create a file NT then preserves the upper case name which 
the GNU tools now think is different from the lower case name.

What I have done when I have run across this is make the compile a two 
command process.  The first is the usual compile command (cc, c85comp, 
whatever).  The second is a simple rename command something like 

rename OUT.OBJ out.obj

Some rename utilities attempt to help you and since the name hasn't 
changed they don't touch it.  There should be some rename/lowercase 
filename utilities around (I don't know if cygwins mv will work).  It's 
been a while since I've dealt with it so I can't offer much more than 
that as genreal guidance.  But take comfort in the fact that it can be 
done.  Worst case involves a copy to a new filename.

Robert

On Mon, 19 Jul 2004 03:00:16 +0100, "Steve at fivetrees"
<steve@NOSPAMTAfivetrees.com> wrote:

>"Anton Erasmus" <nobody@nowhere.net> wrote in message
>news:2chlf05qp85r897uvu96ug2o17s1u0k7l1@4ax.com...
>> I use gnu make for most of my make file these days.
>> Now I have to change some old code that used the old
>> IAR DOS 8051 tools. The problem is that the output file names
>> are all converted to upper case, which causes havoc with the make
>> rules, since all my input files are lower case filenames.
>> Does anyone have a way of getting gnu make to do
>> a case insensitive compare ?
>
>I presume you're using *nix.
>
>1) Why does the case of the old output filenames matter? Aren't you
>rebuilding from scratch?
>
>2) What, specifically, is the problem with your makefile?
>

I am using bash under cygwin. With make the case of the output file
matters. If one has a rule to build generate .o files from .c files
and the C compiler generates FILENAME.O in stead of filename.o
as it should, then make does not recognise the FILENAME.O. When using
this particular compiler I want to be able to tell make to treat
FILENAME.O as if it was filename.o.

Regards
  Anton Erasmus

On Mon, 19 Jul 2004 16:42:30 GMT, R Adsett
<radsett@junk.aeolusdevelopment.cm> wrote:

[...]
>
>rename OUT.OBJ out.obj
>
>Some rename utilities attempt to help you and since the name hasn't 
>changed they don't touch it.  There should be some rename/lowercase 

If this is a problem, you could adjust the compiler options to
generate object files with a different extension (.o or whatever) and
rename those

   mv OUT.O out.obj

Or vice versa.  Or vice vice versa (link .o files instead of .obj
files or vice versa).


Regards,

                               -=Dave
-- 
Change is inevitable, progress is not.

On Mon, 19 Jul 2004 16:42:30 GMT, R Adsett
<radsett@junk.aeolusdevelopment.cm> wrote:

>In article <EdedndBT4eSQtmbdRVn-hw@nildram.net>, 
>steve@NOSPAMTAfivetrees.com says...
>> "Anton Erasmus" <nobody@nowhere.net> wrote in message
>> news:2chlf05qp85r897uvu96ug2o17s1u0k7l1@4ax.com...
>> > I use gnu make for most of my make file these days.
>> > Now I have to change some old code that used the old
>> > IAR DOS 8051 tools. The problem is that the output file names
>> > are all converted to upper case, which causes havoc with the make
>> > rules, since all my input files are lower case filenames.
>> > Does anyone have a way of getting gnu make to do
>> > a case insensitive compare ?
>> 
>> I presume you're using *nix.
>Since he is using DOS tools tht seems less likely.  In fact given the 
>problem description is seems most probable to me that he is using one of 
>the newer windows variants (NT, 9X etc..).  They have adopted the 
>unfortunate case perserving but case insensitive approach.  The GNU tools 
>ported to NT generally maintain their case sensitive nature.  A lot of 
>the DOS based tools uppercase filenames before opening or creating a file 
>which gives no problem when they open an existing lower case file (name) 
>but when they create a file NT then preserves the upper case name which 
>the GNU tools now think is different from the lower case name.
>
>What I have done when I have run across this is make the compile a two 
>command process.  The first is the usual compile command (cc, c85comp, 
>whatever).  The second is a simple rename command something like 
>
>rename OUT.OBJ out.obj
>
>Some rename utilities attempt to help you and since the name hasn't 
>changed they don't touch it.  There should be some rename/lowercase 
>filename utilities around (I don't know if cygwins mv will work).  It's 
>been a while since I've dealt with it so I can't offer much more than 
>that as genreal guidance.  But take comfort in the fact that it can be 
>done.  Worst case involves a copy to a new filename.
>

Thanks,

You described my problem much better than I did. I want to use cygwin
under Windows2000 for building my old DOS based projects. The 2 step 
approach looks like it will work, even if I have to write my own
special rename command. (I am sure there should be a simple script
based method using something available under cygwin)

Regards
   Anton Erasmus

On 18 Jul 2004 21:52:34 GMT, Hans-Bernhard Broeker
<broeker@physik.rwth-aachen.de> wrote:

>Anton Erasmus <nobody@nowhere.net> wrote:
>
>> I use gnu make for most of my make file these days. 
>> Now I have to change some old code that used the old
>> IAR DOS 8051 tools. The problem is that the output file names
>> are all converted to upper case, which causes havoc with the make
>> rules, since all my input files are lower case filenames. 
>
>I don't see why that would cause havoc --- DOS completely ignores
>filename case, and so will any version of GNU make ported to DOS.  If
>it didn't, that port of GNU make would have to be considered fatally
>flawed.
>
>Could you give a more detailed description of the problem?

Dave Hansen has solved my problem. (And given a better description of
the problem)

But to recap:
I am using tools written for DOS in a non-DOS environment,
specifically cygwin under Windows 2000. In cygwin the gnu tools
does not ignore case. The problem is that the old DOS tools generate
output filenames in upper case only. e.g. If I specify that a lst file
should be generated, and the input file is file.c the output file
would be FILE.LST, even if I explicitly specify an output file of
file.lst.
The solution is a two step process involving running the tool
that generates the upper case filename, and then renaming the output
with a suitable utility to the lower case form.

Regards
   Anton Erasmus