#3251: split rts headers into public and private
-----------------------------+----------------------------------------------
Reporter: duncan | Owner:
Type: feature request | Status: new
Priority: normal | Component: Runtime System
Version: 6.10.2 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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C code calling into the rts, eg to initialise it, uses header files like
`HsFFI.h` or `RtsAPI.h`. However these header files that describe the
public API of the rts are installed in `$libdir/ghc-x.y/include` where as
the standard location for public header files should be
`$prefix/include/ghc-x.y`.
The private header files that are only used by `.hc` files when compiling
`-fvia-C` should remain where they are. So this would involve identifying
which headers are public and which are private.
Once we have a set of public header files it might be nice to provide a
`pkg-config` .pc file to make it easy for C programs to locate the header
files and libraries. Eg it should be possible to compile and link a C
program that uses the RTS public API with just:
{{{
gcc -o main main.c `pkg-config --cflags --libs ghc-rts-6.12.1`
}}}
and this would supply the flags like
{{{
-I/usr/include/ghc-6.12.1 -lHSrts -L/usr/lib/ghc-6.12.1
}}}
Note that `pkg-config` supports both shared and static libs (ie allows
specifying the extra private deps of a static lib, eg `-lm -ldl` etc).
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3251>
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