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Auto-enable YJIT build when rustc >= 1.58.0 present (#6662)

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* Auto-enable YJIT build when rustc >= 1.58.0 present

* Try different incantation to have rustc output to stdout only

* Add comment, remove whitespace

* Try to detect if we are on a platform on which YJIT is supported
This commit is contained in:
Maxime Chevalier-Boisvert 2022-11-04 17:02:04 -04:00 committed by GitHub
parent 6d83590157
commit dd4ae9a475
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Notes: git 2022-11-04 21:02:32 +00:00 
Merged-By: maximecb <maximecb@ruby-lang.org>
1 changed files with 33 additions and 4 deletions
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33
configure.ac
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@ -3733,10 +3733,40 @@ AS_IF([test x"$MJIT_SUPPORT" = "xyes"],
AC_SUBST(MJIT_SUPPORT)
AC_CHECK_TOOL(RUSTC, [rustc], [no])
dnl check if we can build YJIT on this target platform
AS_CASE(["$target_cpu-$target_os"],
[arm64-darwin*|aarch64-darwin*|x86_64-darwin*], [
YJIT_TARGET_OK=yes
],
[arm64-*linux*|aarch64-*linux*|x86_64-*linux*], [
YJIT_TARGET_OK=yes
],
[arm64-*bsd*|aarch64-*bsd*|x86_64-*bsd*], [
YJIT_TARGET_OK=yes
],
[YJIT_TARGET_OK=no]
)
dnl build YJIT in release mode if rustc >= 1.58.0 is present and we are on a supported platform
AC_ARG_ENABLE(yjit,
AS_HELP_STRING([--enable-yjit],
[enable experimental in-process JIT compiler that requires Rust build tools [default=no]]),
[YJIT_SUPPORT=$enableval], [YJIT_SUPPORT=no])
[YJIT_SUPPORT=$enableval],
[
AS_IF([test x"$RUSTC" != "xno"],
AS_IF([ echo "fn main() { let x = 1; format!(\"{x}\"); }" | rustc - --emit asm=/dev/null ],
AS_IF([test x"$YJIT_TARGET_OK" != "xno"],
[YJIT_SUPPORT=yes],
[YJIT_SUPPORT=no]
),
[YJIT_SUPPORT=no]
),
[YJIT_SUPPORT=no]
)
]
)
CARGO=
CARGO_BUILD_ARGS=
@ -3784,7 +3814,6 @@ AS_CASE(["${YJIT_SUPPORT}"],
AC_DEFINE(USE_YJIT, 1)
], [AC_DEFINE(USE_YJIT, 0)])
dnl These variables end up in ::RbConfig::CONFIG
AC_SUBST(YJIT_SUPPORT)dnl what flavor of YJIT the Ruby build includes
AC_SUBST(RUSTC)dnl Rust compiler command