Snippets Groups Projects

Pass -optcxx for GHC >= 8.10

Eric Conlon authored 4 years ago

Fixes https://github.com/haskell/cabal/issues/6421

To summarize, Cabal passes all C and C++ flags through GHC to the underlying C or C++ compiler using -optc. This works for GHC < 8.10, but now GHC expects C++ flags to come through -optcxx. This means that anything through -optc is ignored, so we cannot pass any flags to the C++ compiler. This change simply detects the GHC version and uses the correct arguments.

This PR has been tested manually and two PackageTests have been added to cabal-testsuite. They pass under GHC 8.8.4 and GHC 8.10.2.

28380790

28380790 4 years ago

Name	Last commit	Last update
.docker
.github
Cabal
bootstrap
buildinfo-reference-generator
cabal-benchmarks
cabal-dev-scripts
cabal-install
cabal-testsuite
changelog.d
doc
editors/vim
license-list-data
release-notes
solver-benchmarks
templates
.arcconfig
.dockerignore
.ghci
.ghcid
.git-blame-ignore-revs
.gitattributes
.gitignore
.mailmap
.mention-bot
.projectile
.readthedocs.yml
.stylish-haskell.yaml
AUTHORS
CONTRIBUTING.md
LICENSE
Makefile
README.md
appveyor-retry.cmd
appveyor.yml
cabal.project
cabal.project.bootstrap
cabal.project.buildinfo
cabal.project.libonly
cabal.project.meta
cabal.project.release
cabal.project.validate
cabal.project.validate.libonly
cabal.project.weeder
generics-sop-lens.hs
ghc-packages
id_rsa_cabal_website.aes256.enc
release-checklist.md
release.py
stack.yaml
validate.sh
weeder.dhall

Cabal

This Cabal Git repository contains the following packages:

Cabal: the Cabal library package (license)
cabal-install: the package containing the cabal tool (license)

The canonical upstream repository is located at https://github.com/haskell/cabal.

Installing Cabal (by downloading the binary)

Prebuilt binary releases can be obtained from https://www.haskell.org/cabal/download.html. The cabal-install binary download for your platform should contain the cabal executable.

Installing Cabal (with cabal)

Assuming that you have a pre-existing, older version of cabal-install, run:

cabal install cabal-install

To get the latest version of cabal-install. (You may want to cabal update first.)

To install the latest version from the Git repository, clone the Git repository and then run:

(cd Cabal; cabal install)
(cd cabal-install; cabal install)

Installing Cabal (without cabal)

Assuming you don't have a pre-existing copy of cabal-install, run:

cabal-install $ ./bootstrap.sh # running ./bootstrap.sh from within in cabal-install folder.

For more details, and non-unix like systems, see the README.md in cabal-install and Contributing Guidelines.