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dovecot: Work around clang 23 hang

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clang 23 enables DFAJumpThreading by default and takes over 90
minutes on the switch based state machine loops in the lib-json
tests, where clang 22 needs under a second. Reported upstream with a
bisect and reduced testcase:
https://github.com/llvm/llvm-project/issues/221391

Disable just that pass for clang builds until the fix lands. gcc
builds are not affected.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Sunil Dora <sunilkumar.dora@windriver.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
This commit is contained in:
Khem Raj
2026-09-05 09:07:03 -07:00
committed by Khem Raj
parent 92f2af09b1
commit e39fd90bde
1 changed files with 3 additions and 0 deletions
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meta-networking/recipes-support/dovecot/dovecot_2.4.5.bb
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@@ -20,6 +20,9 @@ SRC_URI[sha256sum] = "868c2686a61b5f8e00a3e4721789b1ab46e6528fd773a5fbed07a6ecba
DEPENDS = "openssl xz zlib bzip2 libcap icu libtirpc bison-native"
CFLAGS += "-I${STAGING_INCDIR}/tirpc"
# clang 23 takes hours to compile the lib-json tests, drop when
# https://github.com/llvm/llvm-project/issues/221391 is fixed
CFLAGS:append:toolchain-clang = " -mllvm -enable-dfa-jump-thread=false"
LDFLAGS += "-ltirpc"
inherit autotools pkgconfig systemd useradd gettext multilib_header