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core/pkgs/by-name/gc/gcc/common/configure-flags.nix
Victor Fuentes 072e19ee33
pkgs: init
2024-05-13 11:34:52 -04:00

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{ lib, stdenv
, targetPackages
, withoutTargetLibc, libcCross
, threadsCross
, version
, binutils, gmp, mpfr, libmpc, isl
, cloog ? null
, enableLTO
, enableMultilib
, enablePlugin
, disableGdbPlugin ? !enablePlugin
, enableShared
, langC
, langCC
, langD ? false
, langFortran
, langJava ? false, javaAwtGtk ? false, javaAntlr ? null, javaEcj ? null
, langAda ? false
, langGo
, langObjC
, langObjCpp
, langJit
, disableBootstrap ? stdenv.targetPlatform != stdenv.hostPlatform
}:
assert !enablePlugin -> disableGdbPlugin;
assert langJava -> lib.versionOlder version "7";
# Note [Windows Exception Handling]
# sjlj (short jump long jump) exception handling makes no sense on x86_64,
# it's forcably slowing programs down as it produces a constant overhead.
# On x86_64 we have SEH (Structured Exception Handling) and we should use
# that. On i686, we do not have SEH, and have to use sjlj with dwarf2.
# Hence it's now conditional on x86_32 (i686 is 32bit).
#
# ref: https://stackoverflow.com/questions/15670169/what-is-difference-between-sjlj-vs-dwarf-vs-seh
let
inherit (stdenv)
buildPlatform hostPlatform targetPlatform;
# See https://github.com/NixOS/nixpkgs/pull/209870#issuecomment-1500550903
disableBootstrap' = disableBootstrap && !langFortran && !langGo;
crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
crossDarwin = targetPlatform != hostPlatform && targetPlatform.libc == "libSystem";
targetPrefix = lib.optionalString (stdenv.targetPlatform != stdenv.hostPlatform)
"${stdenv.targetPlatform.config}-";
crossConfigureFlags =
# Ensure that -print-prog-name is able to find the correct programs.
[
"--with-as=${if targetPackages.stdenv.cc.bintools.isLLVM then binutils else targetPackages.stdenv.cc.bintools}/bin/${targetPlatform.config}-as"
"--with-ld=${targetPackages.stdenv.cc.bintools}/bin/${targetPlatform.config}-ld"
]
++ (if withoutTargetLibc then [
"--disable-libssp"
"--disable-nls"
"--without-headers"
"--disable-threads"
"--disable-libgomp"
"--disable-libquadmath"
(lib.enableFeature enableShared "shared")
"--disable-libatomic" # requires libc
"--disable-decimal-float" # requires libc
"--disable-libmpx" # requires libc
] ++ lib.optionals crossMingw [
"--with-headers=${lib.getDev libcCross}/include"
"--with-gcc"
"--with-gnu-as"
"--with-gnu-ld"
"--disable-debug"
"--disable-win32-registry"
"--enable-hash-synchronization"
"--enable-libssp"
"--disable-nls"
# To keep ABI compatibility with upstream mingw-w64
"--enable-fully-dynamic-string"
] ++ lib.optionals (crossMingw && targetPlatform.isx86_32) [
# See Note [Windows Exception Handling]
"--enable-sjlj-exceptions"
"--with-dwarf2"
] else [
(if crossDarwin then "--with-sysroot=${lib.getLib libcCross}/share/sysroot"
else "--with-headers=${lib.getDev libcCross}${libcCross.incdir or "/include"}")
"--enable-__cxa_atexit"
"--enable-long-long"
"--enable-threads=${if targetPlatform.isUnix then "posix"
else if targetPlatform.isWindows then (threadsCross.model or "win32")
else "single"}"
"--enable-nls"
] ++ lib.optionals (targetPlatform.libc == "uclibc" || targetPlatform.libc == "musl") [
# libsanitizer requires netrom/netrom.h which is not
# available in uclibc.
"--disable-libsanitizer"
] ++ lib.optional (targetPlatform.libc == "newlib" || targetPlatform.libc == "newlib-nano") "--with-newlib"
++ lib.optional (targetPlatform.libc == "avrlibc") "--with-avrlibc"
);
configureFlags =
# Basic dependencies
[
"--with-gmp-include=${gmp.dev}/include"
"--with-gmp-lib=${gmp.out}/lib"
"--with-mpfr-include=${mpfr.dev}/include"
"--with-mpfr-lib=${mpfr.out}/lib"
"--with-mpc=${libmpc}"
]
++ lib.optionals (!withoutTargetLibc) [
(if libcCross == null
then "--with-native-system-header-dir=${lib.getDev stdenv.cc.libc}/include"
else "--with-native-system-header-dir=${lib.getDev libcCross}${libcCross.incdir or "/include"}")
# gcc builds for cross-compilers (build != host) or cross-built
# gcc (host != target) always apply the offset prefix to disentangle
# target headers from build or host headers:
# ${with_build_sysroot}${native_system_header_dir}
# or ${test_exec_prefix}/${target_noncanonical}/sys-include
# or ${with_sysroot}${native_system_header_dir}
# While native build (build == host == target) uses passed headers
# path as is:
# ${with_build_sysroot}${native_system_header_dir}
#
# Nixpkgs uses flat directory structure for both native and cross
# cases. As a result libc headers don't get found for cross case
# and many modern features get disabled (libssp is used instead of
# target-specific implementations and similar). More details at:
# https://github.com/NixOS/nixpkgs/pull/181802#issuecomment-1186822355
#
# We pick "/" path to effectively avoid sysroot offset and make it work
# as a native case.
"--with-build-sysroot=/"
# Same with the stdlibc++ headers embedded in the gcc output
"--with-gxx-include-dir=${placeholder "out"}/include/c++/${version}/"
]
# Basic configuration
++ [
# Force target prefix. The behavior if `--target` and `--host`
# are specified is inconsistent: Sometimes specifying `--target`
# always causes a prefix to be generated, sometimes it's only
# added if the `--host` and `--target` differ. This means that
# sometimes there may be a prefix even though nixpkgs doesn't
# expect one and sometimes there may be none even though nixpkgs
# expects one (since not all information is serialized into the
# config attribute). The easiest way out of these problems is to
# always set the program prefix, so gcc will conform to our
# expectations.
"--program-prefix=${targetPrefix}"
(lib.enableFeature enableLTO "lto")
"--disable-libstdcxx-pch"
"--without-included-gettext"
"--with-system-zlib"
"--enable-static"
"--enable-languages=${
lib.concatStringsSep ","
( lib.optional langC "c"
++ lib.optional langCC "c++"
++ lib.optional langD "d"
++ lib.optional langFortran "fortran"
++ lib.optional langJava "java"
++ lib.optional langAda "ada"
++ lib.optional langGo "go"
++ lib.optional langObjC "objc"
++ lib.optional langObjCpp "obj-c++"
++ lib.optionals crossDarwin [ "objc" "obj-c++" ]
++ lib.optional langJit "jit"
)
}"
]
++ (if (enableMultilib || targetPlatform.isAvr)
then ["--enable-multilib" "--disable-libquadmath"]
else ["--disable-multilib"])
++ lib.optional (!enableShared) "--disable-shared"
++ lib.singleton (lib.enableFeature enablePlugin "plugin")
# Libcc1 is the GCC cc1 plugin for the GDB debugger which is only used by gdb
++ lib.optional disableGdbPlugin "--disable-libcc1"
# Support -m32 on powerpc64le/be
++ lib.optional (targetPlatform.system == "powerpc64le-linux")
"--enable-targets=powerpcle-linux"
++ lib.optional (targetPlatform.system == "powerpc64-linux")
"--enable-targets=powerpc-linux"
# Fix "unknown long double size, cannot define BFP_FMT"
++ lib.optional (targetPlatform.isPower && targetPlatform.isMusl)
"--disable-decimal-float"
# Optional features
++ lib.optional (isl != null) "--with-isl=${isl}"
++ lib.optionals (lib.versionOlder version "5" && cloog != null) [
"--with-cloog=${cloog}"
"--disable-cloog-version-check"
"--enable-cloog-backend=isl"
]
# Ada options, gcc can't build the runtime library for a cross compiler
++ lib.optional langAda
(if hostPlatform == targetPlatform
then "--enable-libada"
else "--disable-libada")
# Java options
++ lib.optionals langJava [
"--with-ecj-jar=${javaEcj}"
# Follow Sun's layout for the convenience of IcedTea/OpenJDK. See
# <http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2010-April/008888.html>.
"--enable-java-home"
"--with-java-home=\${prefix}/lib/jvm/jre"
]
++ lib.optional javaAwtGtk "--enable-java-awt=gtk"
++ lib.optional (langJava && javaAntlr != null) "--with-antlr-jar=${javaAntlr}"
++ import ../common/platform-flags.nix { inherit (stdenv) targetPlatform; inherit lib; }
++ lib.optionals (targetPlatform != hostPlatform) crossConfigureFlags
++ lib.optional disableBootstrap' "--disable-bootstrap"
# Platform-specific flags
++ lib.optional (targetPlatform == hostPlatform && targetPlatform.isx86_32) "--with-arch=${stdenv.hostPlatform.parsed.cpu.name}"
++ lib.optional targetPlatform.isNetBSD "--disable-libssp" # Provided by libc.
++ lib.optionals hostPlatform.isSunOS [
"--enable-long-long" "--enable-libssp" "--enable-threads=posix" "--disable-nls" "--enable-__cxa_atexit"
# On Illumos/Solaris GNU as is preferred
"--with-gnu-as" "--without-gnu-ld"
]
++ lib.optional (targetPlatform.libc == "musl")
# musl at least, disable: https://git.buildroot.net/buildroot/commit/?id=873d4019f7fb00f6a80592224236b3ba7d657865
"--disable-libmpx"
++ lib.optionals (targetPlatform == hostPlatform && targetPlatform.libc == "musl") [
"--disable-libsanitizer"
"--disable-symvers"
"libat_cv_have_ifunc=no"
"--disable-gnu-indirect-function"
]
++ lib.optionals langJit [
"--enable-host-shared"
]
++ lib.optionals (langD) [
"--with-target-system-zlib=yes"
]
# On mips64-unknown-linux-gnu libsanitizer defines collide with
# glibc's definitions and fail the build. It was fixed in gcc-13+.
++ lib.optionals (targetPlatform.isMips && targetPlatform.parsed.abi.name == "gnu" && lib.versions.major version == "12") [
"--disable-libsanitizer"
]
++ lib.optionals targetPlatform.isAlpha [
# Workaround build failures like:
# cc1: error: fp software completion requires '-mtrap-precision=i' [-Werror]
"--disable-werror"
]
;
in configureFlags
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