#179: support GHC's main-is extension
----------------------------+-----------------------------------------------
Reporter: duncan | Owner:
Type: enhancement | Status: reopened
Priority: low | Milestone: _|_
Component: Cabal library | Version: 1.2.2.0
Severity: normal | Resolution:
Keywords: | Difficulty: normal
Ghcversion: 6.4.2 | Platform: Linux
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Comment(by cjs):
Giving each target its own build directory works, but causes a lot of
extra building when you have a lot of targets in a large system. E.g., in
one recent major project I had perhaps a hundred source files and 20-30
targets (including test targets--only a dozen or so were production
targets). Separate build dirs for each target would have turned a 5-10
minute full build into 2-3 hour full build.
I was told the solution is to use libraries, but when you have test
framework "main" targets within a number of library modules, that still
doesn't fix the problem unless you also do do some interesting work on
your build system to build a library and then a single module within that
library separately that links to the rest of the library.
--
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/179#comment:26>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects
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