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lib: Clean up how linux and gcc config is specified

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The `platform` field is pointless nesting: it's just stuff that happens
to be defined together, and that should be an implementation detail.

This instead makes `linux-kernel` and `gcc` top level fields in platform
configs. They join `rustc` there [all are optional], which was put there
and not in `platform` in anticipation of a change like this.

`linux-kernel.arch` in particular also becomes `linuxArch`, to match the
other `*Arch`es.

The next step after is this to combine the *specific* machines from
`lib.systems.platforms` with `lib.systems.examples`, keeping just the
"multiplatform" ones for defaulting.
This commit is contained in:
John Ericson
2021-01-21 22:44:09 -05:00
parent 77403c1c19
commit 8929989614
37 changed files with 429 additions and 423 deletions
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pkgs/build-support/cc-wrapper/default.nix
+8 -8
View File
@@ -403,31 +403,31 @@ stdenv.mkDerivation {
# discrepency (x86_64 vs. x86-64), so we provide an "arch" arg in
# that case.
+ optionalString ((targetPlatform ? platform.gcc.arch) &&
isGccArchSupported targetPlatform.platform.gcc.arch) ''
echo "-march=${targetPlatform.platform.gcc.arch}" >> $out/nix-support/cc-cflags-before
isGccArchSupported targetPlatform.gcc.arch) ''
echo "-march=${targetPlatform.gcc.arch}" >> $out/nix-support/cc-cflags-before
''
# -mcpu is not very useful. You should use mtune and march
# instead. It’s provided here for backwards compatibility.
+ optionalString (targetPlatform ? platform.gcc.cpu) ''
echo "-mcpu=${targetPlatform.platform.gcc.cpu}" >> $out/nix-support/cc-cflags-before
echo "-mcpu=${targetPlatform.gcc.cpu}" >> $out/nix-support/cc-cflags-before
''
# -mfloat-abi only matters on arm32 but we set it here
# unconditionally just in case. If the abi specifically sets hard
# vs. soft floats we use it here.
+ optionalString (targetPlatform ? platform.gcc.float-abi) ''
echo "-mfloat-abi=${targetPlatform.platform.gcc.float-abi}" >> $out/nix-support/cc-cflags-before
echo "-mfloat-abi=${targetPlatform.gcc.float-abi}" >> $out/nix-support/cc-cflags-before
''
+ optionalString (targetPlatform ? platform.gcc.fpu) ''
echo "-mfpu=${targetPlatform.platform.gcc.fpu}" >> $out/nix-support/cc-cflags-before
echo "-mfpu=${targetPlatform.gcc.fpu}" >> $out/nix-support/cc-cflags-before
''
+ optionalString (targetPlatform ? platform.gcc.mode) ''
echo "-mmode=${targetPlatform.platform.gcc.mode}" >> $out/nix-support/cc-cflags-before
echo "-mmode=${targetPlatform.gcc.mode}" >> $out/nix-support/cc-cflags-before
''
+ optionalString (targetPlatform ? platform.gcc.tune &&
isGccArchSupported targetPlatform.platform.gcc.tune) ''
echo "-mtune=${targetPlatform.platform.gcc.tune}" >> $out/nix-support/cc-cflags-before
isGccArchSupported targetPlatform.gcc.tune) ''
echo "-mtune=${targetPlatform.gcc.tune}" >> $out/nix-support/cc-cflags-before
''
# TODO: categorize these and figure out a better place for them