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Corrected Boost Jam's initial build to make --update builds correctly detect changes in included headers. Removed the need for literal tab characters embedded in the build script.

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[SVN r80186]
This commit is contained in:
Jurko Gospodnetić
2012-08-25 02:52:04 +00:00
parent 82238200d9
commit cc81f70f9f
1 changed files with 17 additions and 13 deletions
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30
src/engine/build.jam
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@@ -787,23 +787,27 @@ rule .jam
# Scan sources for header dependencies.
# WARNING: Yes those are *REAL TABS* below. DO NOT CHANGE, under any
# circumstances, to spaces!! And the tabs indenting this are here so that if
# someone is in the mood to replace tabs they hit this comment, and hopefully
# notice their error.
rule .scan
#
# In order to keep things simple, we do not support include paths here. This
# means our build will only detect changes in headers included relative to the
# current folder as opposed to those included from somewhere on the include
# path.
rule .scan ( targets + )
{
HDRRULE on $(<:D=) = .hdr.scan ;
HDRSCAN on $(<:D=) = "^[ ]*#[ ]*include[ ]*([<\"][^\">]*[\">]).*$" ;
HDRRULE on $(targets) = .hdr.scan ;
HDRSCAN on $(targets) = "^[ \t]*#[ \t]*include[ \t]*\"([^\"]*)\".*$" ;
}
rule .hdr.scan
rule .hdr.scan ( target : includes * : binding )
{
local hdrs = [ GLOB . : $(>:D=) ] ;
INCLUDES $(<:D=) : $(hdrs:D=) ;
HDRRULE on $(>:D=) = .hdr.scan ;
HDRSCAN on $(>:D=) = "^[ ]*#[ ]*include[ ]*([<\"][^\">]*[\">]).*$" ;
local target-path = [ NORMALIZE_PATH $(binding:D) ] ;
NOCARE $(includes) ;
INCLUDES $(target) : $(includes) ;
SEARCH on $(includes) = $(target-path) ;
ISFILE $(includes) ;
.scan $(includes) ;
}
.scan [ GLOB . : *.c ] ;
.scan $(jam.source) ;
# Distribution making from here on out. Assumes that the docs are already built
# as HTML at ../doc/html. Otherwise they will not be included in the built