Date: Fri, 10 Aug 2018 01:39:43 +0000
From: bugzilla-noreply@freebsd.org
To: bugs@FreeBSD.org
Subject: [Bug 230492] make: -C options doesn't work as explained in man page about value of ${.CURDIR} when logical and physical directory are different.
Message-ID: <bug-230492-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230492 Bug ID: 230492 Summary: make: -C options doesn't work as explained in man page about value of ${.CURDIR} when logical and physical directory are different. Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: yasu@utahime.org In the man page of make(1) '-C' options is explained as following. ---------------------------------------------------------------------- -C directory Change to directory before reading the makefiles or doing anything else. If multiple -C options are specified, each is interpreted relative to the previous one: -C / -C etc is equivalent to -C /etc. ---------------------------------------------------------------------- This means 'make -C /foo/bar/baz' works same as 'cd /foo/bar/baz; make'. But there is an case that make doesn't behaves so. As explained in summary it is about value of ${.CURDIR} and happens when logical and physical directory are different. Let me explain it by providing an example. ---------------------------------------------------------------------- yasu@rolling-vm-freebsd1[2018]% pwd /home/yasu/tmp yasu@rolling-vm-freebsd1[2019]% ls -l total 1 lrwxr-xr-x 1 yasu user 3 8月 10 08:21 bar@ -> foo drwxr-xr-x 2 yasu user 3 8月 10 08:20 foo/ ---------------------------------------------------------------------- /home/yasu/tmp/foo is real directory and /home/yasu/tmp/bar is symbolic link to it. So logical and physical expression of /home/yasu/tmp/bar is different. ---------------------------------------------------------------------- yasu@rolling-vm-freebsd1[2020]% cd /home/yasu/tmp/bar yasu@rolling-vm-freebsd1[2021]% /bin/pwd -L /home/yasu/tmp/bar yasu@rolling-vm-freebsd1[2022]% /bin/pwd -P /home/yasu/tmp/foo ---------------------------------------------------------------------- And there is following Makefile under /home/yasu/tmp/bar. ---------------------------------------------------------------------- yasu@rolling-vm-freebsd1[2023]% cat Makefile ~/tmp/bar all: @echo ${.CURDIR} ---------------------------------------------------------------------- It simply displays value of ${.CURDIR}. Now let's execute make without any arguments. It causes following result. ---------------------------------------------------------------------- yasu@rolling-vm-freebsd1[2024]% make ~/tmp/bar /home/yasu/tmp/foo ---------------------------------------------------------------------- Physical expression of current working directory is displayed. Next, let's execute make with -C options and logical expression of current working directory. In this case it result as following. ---------------------------------------------------------------------- yasu@rolling-vm-freebsd1[2025]% make -C /home/yasu/tmp/bar ~/tmp/bar /home/yasu/tmp/bar ---------------------------------------------------------------------- If '-C' options works exactly as explained in man page, same value as previous execution, that is, physical expression of current working directory should be displayed. Actually, however, what is displayed is logical expression of current working directory. This means '-C' option doesn't work as explained in man page. I confirmed it happens on both 11.2-RELEASE and 12.0-CURRENT (r337160). -- You are receiving this mail because: You are the assignee for the bug.help
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