[bug #34806] target-specific variable with conditional assignment generates garbage

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?34806>

                 Summary: target-specific variable with conditional assignment
generates garbage
                 Project: make
            Submitted by: None
            Submitted on: Sat 12 Nov 2011 12:06:18 AM UTC
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 3.81
        Operating System: POSIX-Based
           Fixed Release: None
           Triage Status: None

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Details:

Target-specific variable conditional assignment is broken.

The following Makefile:

DEFAULT=1234                                                                  
                                                                              
           
                                                                              
                                                                              
           
all:    VAR ?= $(DEFAULT)                                                     
                                                                              
           
all:                                                                          
                                                                              
           
    @echo VAR=$(VAR)

prints '1234' when invoked as 'make' but when invoked as 'make VAR=5678' will
print garbage characters.




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