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lib/systems: Support FreeBSD

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A tricky thing about FreeBSD is that there is no stable ABI across
versions. That means that putting in the version as part of the config
string is paramount.

We have a parsed represenation that separates name versus version to
accomplish this. We include FreeBSD versions 12 and 13 to demonstrate
how it works.
This commit is contained in:
John Ericson 2022-10-31 08:35:51 -04:00
parent f172d86a4e
commit 66aa02f190
7 changed files with 26 additions and 11 deletions
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4
doc/stdenv/meta.chapter.md
View file

@ -44,8 +44,8 @@ $ nix-env -qa hello --json
"mips32-linux",
"x86_64-darwin",
"i686-cygwin",
"i686-freebsd",
"x86_64-freebsd",
"i686-freebsd13",
"x86_64-freebsd13",
"i686-openbsd",
"x86_64-openbsd"
],

3
lib/systems/default.nix
View file

@ -47,9 +47,10 @@ rec {
else if final.isUClibc then "uclibc"
else if final.isAndroid then "bionic"
else if final.isLinux /* default */ then "glibc"
else if final.isFreeBSD then "fblibc"
else if final.isNetBSD then "nblibc"
else if final.isAvr then "avrlibc"
else if final.isNone then "newlib"
else if final.isNetBSD then "nblibc"
# TODO(@Ericson2314) think more about other operating systems
else "native/impure";
# Choose what linker we wish to use by default. Someday we might also

2
lib/systems/doubles.nix
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@ -13,7 +13,7 @@ let
"x86_64-darwin" "i686-darwin" "aarch64-darwin" "armv7a-darwin"
# FreeBSD
"i686-freebsd" "x86_64-freebsd"
"i686-freebsd13" "x86_64-freebsd13"
# Genode
"aarch64-genode" "i686-genode" "x86_64-genode"

5
lib/systems/examples.nix
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@ -303,6 +303,11 @@ rec {
# BSDs
x86_64-freebsd = {
config = "x86_64-unknown-freebsd13";
useLLVM = true;
};
x86_64-netbsd = {
config = "x86_64-unknown-netbsd";
};

2
lib/systems/inspect.nix
View file

@ -59,7 +59,7 @@ rec {
isiOS = { kernel = kernels.ios; };
isLinux = { kernel = kernels.linux; };
isSunOS = { kernel = kernels.solaris; };
isFreeBSD = { kernel = kernels.freebsd; };
isFreeBSD = { kernel = { name = "freebsd"; }; };
isNetBSD = { kernel = kernels.netbsd; };
isOpenBSD = { kernel = kernels.openbsd; };
isWindows = { kernel = kernels.windows; };

15
lib/systems/parse.nix
View file

@ -290,7 +290,11 @@ rec {
# the normalized name for macOS.
macos = { execFormat = macho; families = { inherit darwin; }; name = "darwin"; };
ios = { execFormat = macho; families = { inherit darwin; }; };
freebsd = { execFormat = elf; families = { inherit bsd; }; };
# A tricky thing about FreeBSD is that there is no stable ABI across
# versions. That means that putting in the version as part of the
# config string is paramount.
freebsd12 = { execFormat = elf; families = { inherit bsd; }; name = "freebsd"; version = 12; };
freebsd13 = { execFormat = elf; families = { inherit bsd; }; name = "freebsd"; version = 13; };
linux = { execFormat = elf; families = { }; };
netbsd = { execFormat = elf; families = { inherit bsd; }; };
none = { execFormat = unknown; families = { }; };
@ -431,6 +435,8 @@ rec {
then { cpu = elemAt l 0; vendor = elemAt l 1; kernel = "redox"; }
else if (elemAt l 2 == "mmixware")
then { cpu = elemAt l 0; vendor = elemAt l 1; kernel = "mmixware"; }
else if hasPrefix "freebsd" (elemAt l 2)
then { cpu = elemAt l 0; vendor = elemAt l 1; kernel = elemAt l 2; }
else if hasPrefix "netbsd" (elemAt l 2)
then { cpu = elemAt l 0; vendor = elemAt l 1; kernel = elemAt l 2; }
else if (elem (elemAt l 2) ["eabi" "eabihf" "elf"])
@ -485,10 +491,13 @@ rec {
mkSystemFromString = s: mkSystemFromSkeleton (mkSkeletonFromList (lib.splitString "-" s));
kernelName = kernel:
kernel.name + toString (kernel.version or "");
doubleFromSystem = { cpu, kernel, abi, ... }:
/**/ if abi == abis.cygnus then "${cpu.name}-cygwin"
else if kernel.families ? darwin then "${cpu.name}-darwin"
else "${cpu.name}-${kernel.name}";
else "${cpu.name}-${kernelName kernel}";
tripleFromSystem = { cpu, vendor, kernel, abi, ... } @ sys: assert isSystem sys; let
optExecFormat =
@ -496,7 +505,7 @@ rec {
gnuNetBSDDefaultExecFormat cpu != kernel.execFormat)
kernel.execFormat.name;
optAbi = lib.optionalString (abi != abis.unknown) "-${abi.name}";
in "${cpu.name}-${vendor.name}-${kernel.name}${optExecFormat}${optAbi}";
in "${cpu.name}-${vendor.name}-${kernelName kernel}${optExecFormat}${optAbi}";
################################################################################

6
lib/tests/systems.nix
View file

@ -16,17 +16,17 @@ with lib.systems.doubles; lib.runTests {
testall = mseteq all (linux ++ darwin ++ freebsd ++ openbsd ++ netbsd ++ illumos ++ wasi ++ windows ++ embedded ++ mmix ++ js ++ genode ++ redox);
testarm = mseteq arm [ "armv5tel-linux" "armv6l-linux" "armv6l-netbsd" "armv6l-none" "armv7a-linux" "armv7a-netbsd" "armv7l-linux" "armv7l-netbsd" "arm-none" "armv7a-darwin" ];
testi686 = mseteq i686 [ "i686-linux" "i686-freebsd" "i686-genode" "i686-netbsd" "i686-openbsd" "i686-cygwin" "i686-windows" "i686-none" "i686-darwin" ];
testi686 = mseteq i686 [ "i686-linux" "i686-freebsd13" "i686-genode" "i686-netbsd" "i686-openbsd" "i686-cygwin" "i686-windows" "i686-none" "i686-darwin" ];
testmips = mseteq mips [ "mips64el-linux" "mipsel-linux" "mipsel-netbsd" ];
testmmix = mseteq mmix [ "mmix-mmixware" ];
testriscv = mseteq riscv [ "riscv32-linux" "riscv64-linux" "riscv32-netbsd" "riscv64-netbsd" "riscv32-none" "riscv64-none" ];
testriscv32 = mseteq riscv32 [ "riscv32-linux" "riscv32-netbsd" "riscv32-none" ];
testriscv64 = mseteq riscv64 [ "riscv64-linux" "riscv64-netbsd" "riscv64-none" ];
testx86_64 = mseteq x86_64 [ "x86_64-linux" "x86_64-darwin" "x86_64-freebsd" "x86_64-genode" "x86_64-redox" "x86_64-openbsd" "x86_64-netbsd" "x86_64-cygwin" "x86_64-solaris" "x86_64-windows" "x86_64-none" ];
testx86_64 = mseteq x86_64 [ "x86_64-linux" "x86_64-darwin" "x86_64-freebsd13" "x86_64-genode" "x86_64-redox" "x86_64-openbsd" "x86_64-netbsd" "x86_64-cygwin" "x86_64-solaris" "x86_64-windows" "x86_64-none" ];
testcygwin = mseteq cygwin [ "i686-cygwin" "x86_64-cygwin" ];
testdarwin = mseteq darwin [ "x86_64-darwin" "i686-darwin" "aarch64-darwin" "armv7a-darwin" ];
testfreebsd = mseteq freebsd [ "i686-freebsd" "x86_64-freebsd" ];
testfreebsd = mseteq freebsd [ "i686-freebsd13" "x86_64-freebsd13" ];
testgenode = mseteq genode [ "aarch64-genode" "i686-genode" "x86_64-genode" ];
testredox = mseteq redox [ "x86_64-redox" ];
testgnu = mseteq gnu (linux /* ++ kfreebsd ++ ... */);