diff options
| author | Ian Lynagh <igloo@earth.li> | 2011-12-02 16:55:28 +0000 |
|---|---|---|
| committer | Ian Lynagh <igloo@earth.li> | 2011-12-02 16:55:28 +0000 |
| commit | 2694bb74158bac7276cded2435bba8e889659f98 (patch) | |
| tree | 67496c4d879a3589bda9329d7b63e7dcd2a979be /rules/build-prog.mk | |
| parent | b2d3c5576050a69c26a546ba10726618a72d4b67 (diff) | |
| download | haskell-2694bb74158bac7276cded2435bba8e889659f98.tar.gz | |
Use touchy rather than touch when building on Windows
With Windows 7 in a vitrual box VM on OS X, some very odd things happen
with dates and time stamps when SSHing into cygwin. e.g. here the
"Change" time is in the past:
$ date; touch foo; stat foo
Fri Dec 2 16:58:07 GMTST 2011
File: `foo'
Size: 0 Blocks: 0 IO Block: 65536 regular
empty file
Device: 540aba0bh/1409989131d Inode: 562949953592977 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ ian) Gid: ( 513/ None)
Access: 2011-12-02 16:58:07.414457900 +0000
Modify: 2011-12-02 16:58:07.414457900 +0000
Change: 2011-12-02 16:58:03.495141800 +0000
Birth: 2011-12-02 16:57:57.731469900 +0000
And if we copy such a file, then the copy is older (as determined by the
"Modify" time) than the original:
$ date; touch foo; stat foo; cp foo bar; stat bar
Fri Dec 2 16:59:10 GMTST 2011
File: `foo'
Size: 0 Blocks: 0 IO Block: 65536 regular
empty file
Device: 540aba0bh/1409989131d Inode: 1407374883725128 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ ian) Gid: ( 513/ None)
Access: 2011-12-02 16:59:10.118457900 +0000
Modify: 2011-12-02 16:59:10.118457900 +0000
Change: 2011-12-02 16:59:06.189477700 +0000
Birth: 2011-12-02 16:57:57.731469900 +0000
File: `bar'
Size: 0 Blocks: 0 IO Block: 65536 regular
empty file
Device: 540aba0bh/1409989131d Inode: 281474976882512 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ ian) Gid: ( 513/ None)
Access: 2011-12-02 16:59:06.394555800 +0000
Modify: 2011-12-02 16:59:06.394555800 +0000
Change: 2011-12-02 16:59:06.395532400 +0000
Birth: 2011-12-02 16:58:40.921899600 +0000
This means that make thinks that things are out of date when it
shouldn't, so reinvokes itself repeatedly until the MAKE_RESTARTS
infinite-recursion test triggers.
The touchy program, like most other programs, creates files with both
Modify and Change in the past, which is still a little odd, but is
consistent, so doesn't break make.
Diffstat (limited to 'rules/build-prog.mk')
| -rw-r--r-- | rules/build-prog.mk | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/rules/build-prog.mk b/rules/build-prog.mk index 1f43169ce3..aa66516a11 100644 --- a/rules/build-prog.mk +++ b/rules/build-prog.mk @@ -94,9 +94,9 @@ $(call all-target,$1_$2,$1/$2/build/tmp/$$($1_$2_PROG)) # INPLACE_BIN might be empty if we're distcleaning ifeq "$(findstring clean,$(MAKECMDGOALS))" "" ifneq "$$($1_$2_INSTALL_INPLACE)" "NO" -$$($1_$2_INPLACE) : $1/$2/build/tmp/$$($1_$2_PROG) | $$$$(dir $$$$@)/. +$$($1_$2_INPLACE) : $1/$2/build/tmp/$$($1_$2_PROG) $$(TOUCH_DEP) | $$$$(dir $$$$@)/. "$$(CP)" -p $$< $$@ - touch $$@ + "$$(TOUCH_CMD)" $$@ endif endif |