deptgt-posix.mk revision 1.1
1 # $NetBSD: deptgt-posix.mk,v 1.1 2022/04/18 15:06:28 rillig Exp $ 2 # 3 # Tests for the special target '.POSIX', which enables POSIX mode. 4 # 5 # As of 2022-04-18, this only means that the variable '%POSIX' is defined and 6 # that the variables and rules specified by POSIX replace the default ones. 7 # This is done by loading <posix.mk>, if available. That file is not included 8 # in NetBSD, but only in the bmake distribution. As of 2022-04-18, POSIX 9 # support is not complete. 10 # 11 # Implementation node: this test needs to be isolated from the usual test 12 # to prevent unit-tests/posix.mk from interfering with the posix.mk from the 13 # system directory that this test uses. 14 # 15 # See also: 16 # https://pubs.opengroup.org/onlinepubs/9699919799/utilities/make.html 17 18 TMPDIR?= /tmp/make.test.deptgt-posix 19 SYSDIR= ${TMPDIR}/sysdir 20 MAIN_MK= ${TMPDIR}/main.mk 21 INCLUDED_MK= ${TMPDIR}/included.mk 22 23 all: .PHONY 24 .SILENT: 25 26 set-up-sysdir: .USEBEFORE 27 mkdir -p ${SYSDIR} 28 printf '%s\n' > ${SYSDIR}/sys.mk \ 29 'CC=sys-cc' \ 30 'SEEN_SYS_MK=yes' 31 printf '%s\n' > ${SYSDIR}/posix.mk \ 32 'CC=posix-cc' 33 34 check-is-posix: .USE 35 printf '%s\n' >> ${MAIN_MK} \ 36 '.if $${CC} != "posix-cc"' \ 37 '. error' \ 38 '.endif' \ 39 '.if $${%POSIX} != "1003.2"' \ 40 '. error' \ 41 '.endif' \ 42 'all: .PHONY' 43 44 check-not-posix: .USE 45 printf '%s\n' >> ${MAIN_MK} \ 46 '.if $${CC} != "sys-cc"' \ 47 '. error' \ 48 '.endif' \ 49 '.if defined(%POSIX)' \ 50 '. error' \ 51 '.endif' \ 52 'all: .PHONY' 53 54 check-not-seen-sys-mk: .USE 55 printf '%s\n' >> ${MAIN_MK} \ 56 '.if defined(SEEN_SYS_MK)' \ 57 '. error' \ 58 '.endif' 59 60 run: .USE 61 (cd "${TMPDIR}" && MAKEFLAGS=${MAKEFLAGS.${.TARGET}:Q} ${MAKE} \ 62 -m "${SYSDIR}" -f ${MAIN_MK:T}) 63 rm -rf ${TMPDIR} 64 65 # If the main makefile has a '.for' loop as its first non-comment line, a 66 # strict reading of POSIX 2018 makes the makefile non-conforming. 67 all: after-for 68 after-for: .PHONY set-up-sysdir check-not-posix run 69 printf '%s\n' > ${MAIN_MK} \ 70 '# comment' \ 71 '' \ 72 '.for i in once' \ 73 '.POSIX:' \ 74 '.endfor' 75 76 # If the main makefile has an '.if' conditional as its first non-comment line, 77 # a strict reading of POSIX 2018 makes the makefile non-conforming. 78 all: after-if 79 after-if: .PHONY set-up-sysdir check-not-posix run 80 printf '%s\n' > ${MAIN_MK} \ 81 '# comment' \ 82 '' \ 83 '.if 1' \ 84 '.POSIX:' \ 85 '.endif' 86 87 # If the main makefile first includes another makefile and that included 88 # makefile tries to switch to POSIX mode, that's too late. 89 all: in-included-file 90 in-included-file: .PHONY set-up-sysdir check-not-posix run 91 printf 'include included.mk\n' > ${MAIN_MK} 92 printf '.POSIX:\n' > ${INCLUDED_MK} 93 94 # If the main makefile switches to POSIX mode in its very first line, before 95 # and comment lines or empty lines, that works. 96 all: in-first-line 97 in-first-line: .PHONY set-up-sysdir check-is-posix run 98 printf '%s\n' > ${MAIN_MK} \ 99 '.POSIX:' 100 101 # The only allowed lines before switching to POSIX mode are comment lines. 102 # POSIX defines that empty and blank lines are called comment lines as well. 103 all: after-comment-lines 104 after-comment-lines: .PHONY set-up-sysdir check-is-posix run 105 printf '%s\n' > ${MAIN_MK} \ 106 '# comment' \ 107 '' \ 108 '.POSIX:' 109 110 # Running make with the option '-r' skips the builtin rules from <sys.mk>. 111 # In that mode, '.POSIX:' just loads <posix.mk>, which works as well. 112 MAKEFLAGS.no-builtins= -r 113 all: no-builtins 114 no-builtins: .PHONY set-up-sysdir check-is-posix check-not-seen-sys-mk run 115 printf '%s\n' > ${MAIN_MK} \ 116 '.POSIX:' 117
Indexes created Wed Oct 01 13:09:50 GMT 2025