RE: executing perl problem with make 3.81 versus 3.80

[Martin Dorey]

From make's NEWS file for the 3.81 release:

 

* WARNING: Backward-incompatibility!

 

  In order to comply with POSIX, the way in which GNU make processes

  backslash-newline sequences in recipes has changed.  If your makefiles

  use backslash-newline sequences inside of single-quoted strings in

  recipes you will be impacted by this change.  See the GNU make manual

  subsection "Splitting Recipe Lines" (node "Splitting Lines"), in

  section "Recipe Syntax", chapter "Writing Recipe in Rules", for

  details.

 

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Warren Dodge
Sent: Thursday, September 03, 2009 17:15
To: address@hidden
Cc: address@hidden
Subject: executing perl problem with make 3.81 versus 3.80

 

 

 

I have this "Makefile.bug" and an empty file "yyy" which makes no logical sense as I stripped my

original problem down to this.

 

-----------------------------------------------------------------------------

touch yyy

-----------------------------------------------------------------------------

Makefile.bug

-----------------------------------------------------------------------------

 

.PHONY: ggg

ggg:   

      perl -ne '$$top = "x.p.x1.x1"; if( $$verilog =~ /^$$/ ) { $$x=1}' yyy

 

.PHONY: xxx

xxx:   

      perl -ne '$$top = "x.p.x1.x1"; \

         if( $$verilog =~ /^$$/ ) { $$x=1}'  \

         yyy

 

-----------------------------------------------------------------------------

 

If I use make 3.80 I can make both targets

 

/tools/gmake3.80/bin/make -f Makefile.bug ggg xxx

perl -ne '$top = "x.p.x1.x1"; if( $verilog =~ /^$/ ) { $x=1}' yyy

perl -ne '$top = "x.p.x1.x1"; \

         if( $verilog =~ /^$/ ) { $x=1}'  \

         yyy

 

 

If I use make 3.81 I get an error from perl on the xxx target

 

 

/tools/wdtgnu/make-3.81/bin/make -f Makefile.bug ggg xxx

perl -ne '$top = "x.p.x1.x1"; if( $verilog =~ /^$/ ) { $x=1}' yyy

perl -ne '$top = "x.p.x1.x1"; \

         if( $verilog =~ /^$/ ) { $x=1}'  \

         yyy

syntax error at -e line 2, near "if"

syntax error at -e line 2, near ";}"

Execution of -e aborted due to compilation errors.

make: *** [xxx] Error 255

 

 

It appears that something is going wrong on the interfacing of the perl

command into the bash shell which executes the perl.

 

Here is some information about the 3.81 make.

 

/tools/wdtgnu/make-3.81/bin/make --debug=j  -f Makefile.bug ggg xxx

GNU Make 3.81

Copyright (C) 2006  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.

 

This program built for i686-pc-linux-gnu

perl -ne '$top = "x.p.x1.x1"; if( $verilog =~ /^$/ ) { $x=1}' yyy

Putting child 0x099e70a0 (ggg) PID 1624 on the chain.

Live child 0x099e70a0 (ggg) PID 1624

Reaping winning child 0x099e70a0 PID 1624

Removing child 0x099e70a0 PID 1624 from chain.

perl -ne '$top = "x.p.x1.x1"; \

         if( $verilog =~ /^$/ ) { $x=1}'  \

         yyy

Putting child 0x099e73d0 (xxx) PID 1625 on the chain.

Live child 0x099e73d0 (xxx) PID 1625

syntax error at -e line 2, near "if"

syntax error at -e line 2, near ";}"

Execution of -e aborted due to compilation errors.

Reaping losing child 0x099e73d0 PID 1625

make: *** [xxx] Error 255

Removing child 0x099e73d0 PID 1625 from chain.

 

 

 

 

 

 

 

 

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