1# $NetBSD: varmod-mtime.mk,v 1.14 2025/01/11 20:54:46 rillig Exp $ 2# 3# Tests for the ':mtime' variable modifier, which maps each word of the 4# expression to that file's modification time. 5 6# Note: strftime() uses mktime() for %s and mktime() assumes localtime 7# so this should match time() 8start:= ${%s:L:localtime} # see varmod-gmtime.mk, keyword '%s' 9 10 11# Ensure that this makefile exists and has a modification time. If the file 12# didn't exist, the ':mtime' modifier would return the current time. 13.if ${MAKEFILE:mtime} >= ${start} 14. error 15.endif 16 17 18# For a file that doesn't exist, the ':mtime' modifier returns the current 19# time, without an error or warning message. The returned timestamp differs 20# from the 'now' that is used when updating the timestamps in archives or for 21# touching files using the '-t' option, which is taken once when make is 22# started. 23not_found_mtime:= ${no/such/file:L:mtime} 24.if ${not_found_mtime} < ${start} 25. error 26.endif 27 28 29# The ':mtime' modifier accepts a timestamp in seconds as an optional 30# argument. This timestamp is used as a fallback in case the file's time 31# cannot be determined, without any error or warning message. 32.if ${no/such/file:L:mtime=0} != "0" 33. error 34.endif 35 36 37# The fallback timestamp must start with a digit, and it is interpreted as a 38# decimal integer. 39.if ${no/such/file:L:mtime=00042} != "42" 40. error 41.endif 42 43 44# The fallback timestamp must only be an integer, without trailing characters. 45# expect+1: Invalid argument '123x' for modifier ':mtime' 46.if ${no/such/file:L:mtime=123x} 47. error 48.else 49. error 50.endif 51 52 53# The timestamp of a newly created file must be at least as great as the 54# timestamp when parsing of this makefile started. 55COOKIE= ${TMPDIR:U/tmp}/varmod-mtime.cookie 56_!= touch ${COOKIE} 57.if ${COOKIE:mtime=0} < ${start} 58. error ${COOKIE:mtime=0} < ${start} 59.endif 60_!= rm -f ${COOKIE} 61 62 63# If the optional argument of the ':mtime' modifier is the word 'error', the 64# modifier fails with an error message, once for each affected file. 65# 66# expect+2: Cannot determine mtime for 'no/such/file1': <ENOENT> 67# expect+1: Cannot determine mtime for 'no/such/file2': <ENOENT> 68.if ${no/such/file1 no/such/file2:L:mtime=error} 69. error 70.else 71. error 72.endif 73 74 75# Only the word 'error' is a special argument to the ':mtime' modifier, all 76# other words result in a parse error. 77# expect+1: Invalid argument 'errorhandler-no' for modifier ':mtime' 78.if ${MAKEFILE:mtime=errorhandler-no} > 0 79.else 80. error 81.endif 82 83 84# Only the word 'error' can be used as a fallback argument to the modifier. 85# expect+1: Invalid argument 'warn' for modifier ':mtime' 86.if ${MAKEFILE:mtime=warn} > 0 87. error 88.else 89. error 90.endif 91 92 93# Ensure that the fallback for a missing modification time is indeed the 94# current time, and not any later time. 95end:= ${%s:L:gmtime} 96.if ${not_found_mtime} > ${end} 97. error 98.endif 99 100 101# If the expression is irrelevant, the ':mtime' modifier is only parsed, it 102# does not perform any filesystem operations. 103.if 0 && ${no/such/file:L:mtime=error} 104. error 105.endif 106 107 108# If there is a typo in the modifier name, it does not match. 109# expect+1: Unknown modifier "mtim" 110.if ${anything:L:mtim} 111. error 112.else 113. error 114.endif 115 116 117# An empty word list results in an empty mtime list. 118.if ${:U:mtime} != "" 119. error 120.endif 121