Tcl Source Code

I cross-compile the latest tcl8.4.9 source code on a 
Linux x86 platform targetting an embedded PowerPC 
60x running Linux. The configure script determines that 
the strtod() function needs to be build for this platform, 
and for some reason it also determines that the fixstrtod
() function need to be build as well.
Because of the need for fixstrtod(), the build script adds 
the compiler switch -Dstdtod=fixstrtod to gcc. But this 
causes both strtod() (compat/strtod.c) and fixstrtod() 
(compat/fixstrtod.c) to be compiled into the single 
function fixstrtod(). (compat/fixstrtod.c contains 
an "#undef strtod" to undo this define locally, but 
compat/strtod.c does not). Since fixstrtod() references 
strtod(), subsequent linking fails.
Adding "#undef stdtod" to compat/strtod.c as well 
solves the problem.

This appears to be the last Open ticket that
still touches on the "fixstrtod" issue.

Tcl no longer uses the strtod() routine anywhere.
It can no longer suffer because of any brokenness
in any system strtod() routine.

In at least Tcl 8.7 and later, we should purge Tcl's
build machinery of all crutches, patches and other
heroism dedicated to solving a problem which has
not existed for years.  The solution is now far
more damaging, tripping up cross-compile efforts.

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This is still a current problem with tcl8.5 recent CVS checkout.

File Added - 158251: bug1195167.diff

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Hm... can't seem to attach a file in this bug report area.  I've placed it here 
instead: http://www.equi4.com/pub/etc/bug1195167.diff

-jcw

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I can confirm for 8.4.11 that this is the only issue preventing a cross-compile of 
Tcl.  Am appending a patch which works around this in another way: omitting 
the strtod.c from the build.

-jcw

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I've got this bug also when crosscompiling tcl8.4.9 on x86
with uClibc.
It seems, configure script automatically marks strtod() as
buggy when detects crosscompiling enabled:
tcl8.4.9/unix/configure:6243:
...
if test "$cross_compiling" = yes; then
  tcl_cv_strtod_buggy=0
else
...

// note: zero value means "buggy" accordingly to configure
script

Solution with adding "#undef strtod" works for me, btw.