GHC has been using a custom triple "javascript-unknown-ghcjs" for their (non asm.js, non wasm) javascript-emitting kernel-less target.
https://gitlab.haskell.org/ghc/ghc/-/commit/6636b670233522f01d002c9b97827d00289dbf5c This triple is a bit of an oddball, so the support for it is highly restricted in order to discourage further proliferation of the javascript "cpu" or ghcjs "operating system", which are valid only in combination with each other. --- config.sub | 19 +++++++++++++++++++ testsuite/config-sub.data | 2 ++ 2 files changed, 21 insertions(+) diff --git a/config.sub b/config.sub index 6ae2502..0eee4b6 100755 --- a/config.sub +++ b/config.sub @@ -1200,6 +1200,7 @@ case $cpu-$vendor in | d10v | d30v | dlx | dsp16xx \ | e2k | elxsi | epiphany \ | f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \ + | javascript \ | h8300 | h8500 \ | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ | hexagon \ @@ -1702,6 +1703,9 @@ case $os in # VxWorks passes extra cpu info in the 4th filed. simlinux | simwindows | spe) ;; + # See `case $cpu-$os` validation below + ghcjs) + ;; # Now accept the basic system types. # The portable systems comes first. # Each alternative MUST end in a * to match a version number. @@ -1884,6 +1888,21 @@ case $vendor in ;; esac +# Here we handle the constraint that a (synthetic) cpu and os are +# valid only in combination with each other and nowhere else. +case $cpu-$os in + # The "javascript-unknown-ghcjs" triple is used by GHC; we + # accept it here in order to tolerate that, but reject any + # variations. + javascript-ghcjs) + ;; + javascript-* | *-ghcjs) + echo "Invalid configuration '$1': cpu '$cpu' is not valid with os '$os'" 1>&2 + exit 1 + ;; +esac + + echo "$cpu-$vendor-${kernel:+$kernel-}$os" exit diff --git a/testsuite/config-sub.data b/testsuite/config-sub.data index ba934b6..6fd722c 100644 --- a/testsuite/config-sub.data +++ b/testsuite/config-sub.data @@ -341,6 +341,8 @@ isi68 m68k-isi-sysv j90 j90-cray-unicos j90-cray j90-cray-unicos j90-unicos j90-cray-unicos +javascript-ghcjs javascript-unknown-ghcjs +javascript-unknown-ghcjs javascript-unknown-ghcjs k1om k1om-unknown-none k1om-linux k1om-unknown-linux-gnu kvx-cos kvx-unknown-cos -- 2.41.0
