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{ version, sha256 }:
{ stdenv, fetchurl
# By default, jemalloc puts a je_ prefix onto all its symbols on OSX, which
# then stops downstream builds (mariadb in particular) from detecting it. This
# option should remove the prefix and give us a working jemalloc.
# Causes segfaults with some software (ex. rustc), but defaults to true for backward
# compatibility.
, stripPrefix ? stdenv.hostPlatform.isDarwin
, disableInitExecTls ? false
}:
with stdenv.lib;
stdenv.mkDerivation rec {
pname = "jemalloc";
inherit version;
src = fetchurl {
url = "https://github.com/jemalloc/jemalloc/releases/download/${version}/${pname}-${version}.tar.bz2";
inherit sha256;
};
# see the comment on stripPrefix
configureFlags = []
++ optional stripPrefix "--with-jemalloc-prefix="
++ optional disableInitExecTls "--disable-initial-exec-tls"
# jemalloc is unable to correctly detect transparent hugepage support on
# ARM (https://github.com/jemalloc/jemalloc/issues/526), and the default
# kernel ARMv6/7 kernel does not enable it, so we explicitly disable support
++ optionals (stdenv.isAarch32 && versionOlder version "5") [
"--disable-thp"
"je_cv_thp=no"
]
;
doCheck = true;
enableParallelBuilding = true;
meta = with stdenv.lib; {
homepage = "http://jemalloc.net";
description = "General purpose malloc(3) implementation";
longDescription = ''
malloc(3)-compatible memory allocator that emphasizes fragmentation
avoidance and scalable concurrency support.
'';
license = licenses.bsd2;
platforms = platforms.all;
};
}
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