hsc2hs

A preprocessor that helps with writing Haskell bindings to C code

Version on this page:	0.68.8@rev:1
LTS Haskell 20.16:	0.68.9
Stackage Nightly 2023-03-27:	0.68.9
Latest on Hackage:	0.68.9

See all snapshots hsc2hs appears in

BSD-3-Clause licensed by Marcin Kowalczyk

Maintained by ghc-devs@haskell.org

This version can be pinned in stack with:hsc2hs-0.68.8@sha256:988c29f9b25293f44a29cf5164e2ec07a9f95e8d92c4ab3985e4915abf213a69,2976

Module documentation for 0.68.8

There are no documented modules for this package.

Depends on 5 packages(full list with versions):

base, containers, directory, filepath, process

The hsc2hs program can be used to automate some parts of the process of writing Haskell bindings to C code. It reads an almost-Haskell source file with embedded special constructs, and outputs a real Haskell file with these constructs processed, based on information taken from some C headers. The extra constructs provide Haskell counterparts of C types, values of C constants, including sizes of C types, and access to fields of C structs.

For more details, see the hsc2hs section in the GHC User's Guide.

Changes

0.68.8

Process flags in order, now the last of --compiler, --linker, --template is used. (#35)
WINIO: Make sure that with we don’t use the TEMP workaround (#52)

0.68.7

The C compiler is now assumed to be called cc instead of gcc by default (#42)
Fix race condition when using response files (#30)
Add extra diagnostics when hsc2hs sub-process fails and make TempFile creation fully atomic on Windows. See (#33)

0.68.6

Supports generation of response files to avoid system filepath limits (#22, #23)
Fix non-deterministic failures for response file handlings (#29)
Temporary file removals on Windows are not a bit more reliable and should throw less access denied errors. See #25 and (#9775)
Accept a leading single quote for data constructor promotion (#13, #17)
Support MonadFail / base-4.13
Include template file as first header in hsc2hs generated C file (#28)
On Windows define __USE_MINGW_ANSI_STDIO to 1 instead of 0 when not already defined in standard template header. This is a more modern default (#28)

0.68.5

Support response files regardless of which GHC hsc2hs was compiled with (#15758)
Support for non-x86 platforms should be significantly more robust due to improvements in hsc2hs’s assembly parser
Add support for haskell files that use a leading single quote for promoted data constructors.

0.68.4

Add support to read command line arguments supplied via response files (#13896)

0.68.2

Support GHC 8.2.1
Make hsc_alignment macro work in clang (D3346)
Track column numbers to improve GHC’s caret diagnostic display (#13388)

0.68.1

Fix type signature of generated main test function to avoid C compiler warnings about unused argc/argv function parameters during feature testing.
Double-escape paths used to build call to hsc_line (#12504)