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opt-debug-file.mk revision 1.11 
      1 # $NetBSD: opt-debug-file.mk,v 1.11 2024/06/30 15:21:24 rillig Exp $
      2 #
      3 # Tests for the -dF command line option, which redirects the debug log
      4 # to a file instead of writing it to stderr.
      5 
      6 # Enable debug logging for variable assignments and evaluation (-dv)
      7 # and redirect the debug logging to the given file.
      8 .MAKEFLAGS: -dvFopt-debug-file.debuglog
      9 
     10 # This output goes to the debug log file.
     11 VAR=	value ${:Uexpanded}
     12 
     13 # Hide the logging output for the remaining actions.
     14 # Before main.c 1.362 from 2020-10-03, it was not possible to disable debug
     15 # logging again.  Since then, an easier way is the undocumented option '-d0'.
     16 .MAKEFLAGS: -dF/dev/null
     17 
     18 # Make sure that the debug logging file contains some logging.
     19 DEBUG_OUTPUT:=	${:!cat opt-debug-file.debuglog!}
     20 # Grmbl.  Because of the := operator in the above line, the variable
     21 # value contains ${:Uexpanded}.  This expression is expanded
     22 # when it is used in the condition below.  Therefore, be careful when storing
     23 # untrusted input in variables.
     24 #.MAKEFLAGS: -dc -dFstderr
     25 .if !${DEBUG_OUTPUT:tW:M*VAR = value expanded*}
     26 .  error ${DEBUG_OUTPUT}
     27 .endif
     28 
     29 # To get the unexpanded text that was actually written to the debug log
     30 # file, the content of that log file must not be stored in a variable.
     31 #
     32 # XXX: In the :M modifier, a dollar is escaped using '$$', not '\$'.  This
     33 # escaping scheme unnecessarily differs from all other modifiers.
     34 .if !${:!cat opt-debug-file.debuglog!:tW:M*VAR = value $${:Uexpanded}*}
     35 .  error
     36 .endif
     37 
     38 .MAKEFLAGS: -d0
     39 
     40 
     41 # See Parse_Error.
     42 .MAKEFLAGS: -dFstdout
     43 # expect+1: This goes to stderr only, once.
     44 .  info This goes to stderr only, once.
     45 .MAKEFLAGS: -dFstderr
     46 # expect+1: This goes to stderr only, once.
     47 .  info This goes to stderr only, once.
     48 .MAKEFLAGS: -dFopt-debug-file.debuglog
     49 # expect+1: This goes to stderr, and in addition to the debug log.
     50 .  info This goes to stderr, and in addition to the debug log.
     51 .MAKEFLAGS: -dFstderr -d0c
     52 .if ${:!cat opt-debug-file.debuglog!:Maddition:[#]} != 1
     53 .  error
     54 .endif
     55 
     56 
     57 # See Main_ParseArgLine, which calls Error.
     58 .MAKEFLAGS: -dFstdout
     59 # expect: make: Unterminated quoted string [make 'This goes to stdout only, once.]
     60 .MAKEFLAGS: 'This goes to stdout only, once.
     61 .MAKEFLAGS: -dFstderr
     62 # expect: make: Unterminated quoted string [make 'This goes to stderr only, once.]
     63 .MAKEFLAGS: 'This goes to stderr only, once.
     64 .MAKEFLAGS: -dFopt-debug-file.debuglog
     65 # expect: make: Unterminated quoted string [make 'This goes to stderr, and in addition to the debug log.]
     66 .MAKEFLAGS: 'This goes to stderr, and in addition to the debug log.
     67 .MAKEFLAGS: -dFstderr -d0c
     68 .if ${:!cat opt-debug-file.debuglog!:MUnterminated:[#]} != 1
     69 .  error
     70 .endif
     71 
     72 
     73 # If the debug log file cannot be opened, make prints an error message and
     74 # exits immediately since the debug log file is usually selected from the
     75 # command line.
     76 _:=	${:!rm opt-debug-file.debuglog!}
     77 .MAKEFLAGS: -dF/nonexistent-6f21c672-a22d-4ef7/opt-debug-file.debuglog
     78