Commit graph

229 commits

Author SHA1 Message Date
John Ericson
43e1137397 cc-wrapper: Define new- and old-style cross env vars
For example, `BUILD_CC` and `CC_FOR_BUILD`
2017-11-28 15:57:05 -05:00
John Ericson
f4cb1e2ffc cc-wrapper: Export env vars for objdump and readelf in setup-hook
Also fix alphabetical order
2017-11-28 15:56:21 -05:00
John Ericson
994cb76850 cc-wrapper: Don't leave CMD defined after setup hook
Rename to `cmd` too, as uppercase typically means the variable is
exported.
2017-11-28 15:56:17 -05:00
John Ericson
43e00f7d18 cc-wrapper: Fix stray binPrefix -> targetPrefix
I thought my sed in e755a8a27d was
exhaustive, but it was not.
2017-11-27 03:30:15 -05:00
John Ericson
e755a8a27d treewide: Use targetPrefix instead of prefix for platform name prefixes
Certain tools, e.g. compilers, are customarily prefixed with the name of
their target platform so that multiple builds can be used at once
without clobbering each other on the PATH. I was using identifiers named
`prefix` for this purpose, but that conflicts with the standard use of
`prefix` to mean the directory where something is installed. To avoid
conflict and confusion, I renamed those to `targetPrefix`.
2017-11-27 03:15:50 -05:00
John Ericson
0101856765
Merge pull request #30549 from obsidiansystems/bintools
treewide: Introduce stdenv.cc.bintools
2017-11-08 14:20:48 -05:00
Vladimír Čunát
c8c6a1edb5
Merge #31209: cc-wrapper: Fix if dynamicLinker not found 2017-11-06 13:07:43 +01:00
Bojan Nikolic
3a63fc1258 Remove trailing line 2017-11-05 23:00:24 +00:00
Bojan Nikolic
2ed054885b Remove the unnecessary second conditional 2017-11-05 22:57:44 +00:00
John Ericson
70d91badf5 treewide: Depend on stdenv.cc.bintools instead of binutils directly
One should do this when needed executables at build time. It is more
honest and cross-friendly than refering to binutils directly.
2017-11-05 17:10:53 -05:00
Nikolay Amiantov
5f3b84e979 cc-wrapper: disable POSIX compatibility 2017-11-05 12:19:37 +02:00
Bojan Nikolic
3e9daece1d nixos/cc-wrapper: Fix bug if dynamicLinker not found
If a dynamic linker for target is not found the generated script fails
due to unbound variable error (due to "set -u"). Correct by specifying
default value with dynamicLinker:- and not generating ldflagsBefore if
no linker is found.

This problem was found when cross compiling to mingw32 targets
2017-11-03 21:36:43 +00:00
Dan Peebles
b426c85ce2 Get rid of most @rpath nonsense on Darwin
This requires some small changes in the stdenv, then working around the
weird choice LLVM made to hardcode @rpath in its install name, and then
lets us remove a ton of annoying workaround hacks in many of our Go
packages. With any luck this will mean less hackery going forward.
2017-10-08 16:13:46 -04:00
John Ericson
fdbda216b1 cc-wrapper: Clean up dynamic linking with x86 multilib
It's better layering to do everything in ld-wrapper. Also, use numeric
comparisons for `relocatable`.
2017-09-28 20:05:26 -04:00
John Ericson
d349f9a340 cc-wrapper: Use stdenvNoCC to build
cc-wrapper may wrap a cc-compiler, but it doesn't need one to build
itself. (c.f. expand-response-params is a separate derivation.) This
helps avoid cycles on the cross stuff, in addition to removing a
useless dependency edge.

I could have been super careful with overrides in the stdenv to avoid
the mass rebuild, but I don't think it's worth it.
2017-09-26 14:08:21 -04:00
John Ericson
0d3d2a01d2 cc-wrapper: Add set -x tracing for NIX_DEBUG >= 7 2017-09-26 11:24:19 -04:00
John Ericson
127a5f3357 treewide: Use (( "${NIX_DEBUG:-0}" >= 1) )) consistently 2017-09-26 11:24:19 -04:00
John Ericson
6c74ee68b9 cc-wrapper, cc-wrapper-old: Simplify shell logic
1. `crossDrv` is now the default so we don't need to worry about that in
   build != host builds.

2. shell is the build time shell, so `wrapCCCross` doesn't need to
   worry, as build == host.

3. `shell.shellPath` will always be appended where useful.

4. Complicated `shell == ""` logic served no purpose.
2017-09-19 16:45:24 -04:00
John Ericson
13fc982e65 cc-wrapper: Use same dynamic loader on all Darwin, not just x86_64
In practice, this is correct because iOS is on ARM and puts the loader
there.
2017-09-18 19:25:58 -04:00
John Ericson
a44bbc72e6 cc-wrapper: Remove obsolete assertion
This was just causing evaluation problems on cross.
2017-09-18 19:22:57 -04:00
Eelco Dolstra
ec8d41f08c
Revert "Merge pull request #28557 from obsidiansystems/binutils-wrapper"
This reverts commit 0a944b345e, reversing
changes made to 61733ed6cc.

I dislike these massive stdenv changes with unclear motivation,
especially when they involve gratuitous mass renames like NIX_CC ->
NIX_BINUTILS. The previous such rename (NIX_GCC -> NIX_CC) caused
months of pain, so let's not do that again.
2017-09-07 12:51:21 +02:00
John Ericson
dbf6d20d64 binutils-wrapper: Import separately from cc-wrapper 2017-09-01 11:44:56 -04:00
John Ericson
40e9b2a7e6 binutils-wrapper: Init
Factor a binutils wrapper out of cc-wrapper. While only LD is wrapped,
the setup hook defines environment variables on behalf of other
utilites.
2017-09-01 11:44:55 -04:00
John Ericson
fbb7d335db cc-wrapper: Use separate mangler for "bool" variables
This avoids any `NIX_FOOBAR=1 1` not triggering conditions.
2017-09-01 11:44:54 -04:00
John Ericson
1f5807d760 cc-wrapper: Pull variable mangler into utils.sh
In preparation for splitting out binutils-wrapper
2017-09-01 11:44:54 -04:00
John Ericson
94c0267fc1 cc-wrapper: Clean up dynamic linking with x86 multilib
It's better layering to do everything in ld-wrapper.
2017-09-01 11:44:54 -04:00
John Ericson
3d3a6e0fac cc-wrapper: Remove support for NIX_LDFLAGS_HARDEN
It has long been deprecated
2017-08-31 13:54:32 -04:00
John Ericson
46fd4bcb14 cc-wrapper: Remove {START,EXEC}_HOOK
These are no longer used by anything
2017-08-31 13:54:07 -04:00
John Ericson
97a48835b7 mkDerivation, cc-wrapper: Check hardening flag validity in Nix
This becomes necessary if more wrappers besides cc-wrapper start
supporting hardening flags. Also good to make the warning into an
error.

Also ensure interface is being used right: Not as a string, not just in
bash.
2017-08-30 17:53:42 +02:00
John Ericson
822a8d0148 cc-wrapper: Remove redundant hardening
GCC just passes `-z ...` flags to ld unaltered, and they are already
passed to LD anyways. On the other hand, `-pie` affects gcc behavior
too.
2017-08-30 17:53:42 +02:00
Daiderd Jordan
92652b4d79
darwin-CF: use @rpath for library id and add an rpath entry for CF based on NIX_COREFOUNDATION_RPATH 2017-08-28 23:24:58 +02:00
John Ericson
df7c305c4c cc-wrapper: Leverage the setup script instead of buildCommand 2017-08-25 15:10:05 -04:00
John Ericson
dc47e763c1 cc-wrapper: Use set -u for better maintainability 2017-08-25 15:10:05 -04:00
John Ericson
a470be5a16 expand-response-params: Build more normally 2017-08-25 15:10:02 -04:00
John Ericson
287fce6402 expand-response-params: Pull out of cc-wrapper
No hashes were changed
2017-08-25 11:21:09 -04:00
Daniel Peebles
4f7f48fb1a Merge pull request #28521 from obsidiansystems/cc-wrapper-dead-code
cc-wrapper: Remove dead code
2017-08-24 16:05:51 -04:00
Tuomas Tynkkynen
0c0fad6141 treewide: Consistently call ARM 'arm'
No need for silly differences.
2017-08-24 01:17:01 +03:00
John Ericson
08f3a60e7b cc-wrapper: Remove dead code
ccPath is only defined below, so this condition would never be true.

Worse, that's not quite true: what if somebody happend to have `/clang`
and no sandboxing. Boy, wouldn't that be annoying to debug!
2017-08-23 17:09:47 -04:00
John Ericson
0135e61b4c Merge remote-tracking branch 'upstream/master' into staging
That way the tarball job succeeds
2017-08-21 18:42:57 -04:00
John Ericson
c035711072 cc-wrapper: Remove unused params
Ensured hashes unchanged and eval succeeds in tarball job
2017-08-21 18:40:41 -04:00
Bojan Nikolic
ad8d5649a2 set +u workaround for empty arrays
libDirs can be empty, which in combination with "set -u" of
9f1e009975 will cause a variable unbound
error on old bash versions
2017-08-21 12:27:26 +01:00
Daiderd Jordan
5d3527c148
cc-wrapper: don't export CPP
CPP defaults to $(CC) -E and setting it explicitly seems to cause
issues in a number of packages like gcc and gdb.

https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html
2017-08-16 21:38:32 +02:00
John Ericson
3c9cf282bb cc-wrapper: Improve set -u compliance 2017-08-14 14:44:32 -04:00
Vladimír Čunát
6899c7fdb9
Merge branch 'master' into gcc-6 2017-08-12 10:09:41 +02:00
Daiderd Jordan
bf8c125170
cc-wrapper: fix LD_DYLD_PATH on darwin
Having multiple compilers in the build environment would result in an
invalid LD_DYLD_PATH like /usr/lib/dyld/usr/lib/dyld.
Since the path is hardcoded in XNU it can't be anything but
/usr/lib/dyld anyway.
2017-08-10 00:22:58 +02:00
Orivej Desh
771f28bac8 cc-wrapper: Fix support for qtbase-setup-hook
Revert https://github.com/NixOS/nixpkgs/pull/27657#issuecomment-318161946
due to https://github.com/NixOS/nixpkgs/pull/28021#issuecomment-321045542
2017-08-09 18:17:46 +02:00
Orivej Desh
a6e7dffd1f cc-wrapper: Fix standalone ld 2017-08-08 11:03:51 +02:00
Orivej Desh
c8e9dcc8a4 cc-wrapper: Fix standalone gcc
This ensures that all salted variables are defined even if the wrapped program
is invoked outside nix-build environment.
2017-08-08 11:03:51 +02:00
Orivej Desh
c8f7f18e69 cc-wrapper: Fix adding directories to rpath
This fixes a bug introduced in #27831: `for path in "$dir"/lib*.so` assumed that
all libs match `lib*.so`, but 07674788d6 started
adding libs that match `*.so` and `*.so.*`.
2017-08-08 11:03:51 +02:00
Robin Gloster
3e981b9e33
Revert "cc-wrapper: fix set -u errors"
This reverts commit 67a41eafe9.

see #28021 for discussion
2017-08-08 10:20:00 +02:00
Robin Gloster
67a41eafe9
cc-wrapper: fix set -u errors
cc @Ericson2314
2017-08-08 10:15:34 +02:00
John Ericson
810fb0c968 cc-wrapper: Don't slurp NIX_DONT_SET_RPATH twice
Otherwise we end with a definition like `1 1`, which doesn't trigger the right
conditional.
2017-08-07 11:09:25 -04:00
John Ericson
2493454e13 cc-wrapper: Use set -u throughout
Now is an opportune time to do this, as the infixSalt conversion in
`add-flags.sh` ensures that all the relevant `NIX_*` vars will be
defined even if empty.
2017-08-07 03:05:51 -04:00
John Ericson
42f35503b5 cc-wrapper: Make hygienic
See the added comments for what exactly has been done.
2017-08-07 03:05:50 -04:00
John Ericson
9f1e009975 cc-wrapper: Unconditionally use @infixSalt@ accross the board
This is basically a sed job, in preparation of the next commit. The
rules are more or less:

  - s"NIX_(.._WRAPPER_)?([a-zA-Z0-9@]*)"NIX_\1@infixSalt@_\2"g

  - except for non-cc-wrapper-specific vars like `NIX_DEBUG`
2017-08-07 03:05:50 -04:00
John Ericson
5ba3972add cc-wrapper: Stop preWrapping
This is an ugly temp hack for cross compilation, but now we have something better on the way.

Bind `infixSalt` as an environment variable as it will be used in it.
2017-08-07 03:05:50 -04:00
Vladimír Čunát
f779df87b1
Merge branch 'master' into staging
Let's drop i686-linux here as well.
2017-08-06 10:03:25 +02:00
John Ericson
6463fd3d7e cc-wrapper: Pass shellcheck and other cleanups
In many cases, this involved taking @orivej's and @edolstra's recent
ld-wrapper improvements, and applying then elsewhere.
2017-08-04 12:47:29 -04:00
John Ericson
8ba6012dfd Merge PR #27536 2017-08-03 17:25:30 -04:00
John Ericson
cd6c452ade cc-wrapper: Don't hardcode MacOS min version for delegates 2017-08-03 16:37:27 -04:00
John Ericson
2e61d8b71c cc-wrapper: Handle more -l.... gotchas 2017-08-03 16:37:27 -04:00
Orivej Desh
07674788d6 Respect NIX_DONT_SET_RPATH when .so appears in the command line
Unified processing of command line arguments in ld-wrapper broke support for
`NIX_DONT_SET_RPATH` and revealed that ld-wrapper adds the directory of its
`-plugin` argument to runpath. This pull request fixes that. It treats
`dir/libname.so` as `-L dir -l name`, because this is how `ld.so` interprets
resulting binary: with `dir` in `RUNPATH` and the bare `libname.so` (without
`dir`) in `NEEDED`, it looks for `libname.so` in each `RUNPATH` and chooses the
first, even when the linker was invoked with an absolute path to `.so`.
2017-08-01 11:57:33 +02:00
John Ericson
1cd74ac70a cc-wrapper: Make sure symbol tables of child delegators is not empty
As described in https://github.com/NixOS/nixpkgs/issues/18461, MacOS no
longer accepts dylibs which only reexport other dylibs, because their
symbol tables are empty. To get around this, we define an object file
with a single "private extern" symbol, which hopefully won't clobber
anything.
2017-07-31 17:02:56 -04:00
John Ericson
9242c8b331 cc-wrapper: Use two scripts instead of patch 2017-07-31 17:02:56 -04:00
John Ericson
0c37778c2c cc-wrapper: WIP linking hack for mac OS
Probably best to override Haskell packages set, or anything else
linking a lot of libraries, with this.
2017-07-31 17:02:56 -04:00
Domen Kožar
61b5b7fd2f Merge pull request #27657 from orivej/optimize-rpath
ld-wrapper: Optimize expanding rpath
2017-07-31 14:43:48 +02:00
Orivej Desh
4964b104b9 ld-wrapper: Optimize expanding rpath
The time to expand rpath was proportional to the number of -L flags times the
number of -l flags.  Now it is proportional to their sum (assuming constant
number of files in each directory in an -L flag).

Issue reported by @nh2 at https://github.com/NixOS/nixpkgs/issues/27609#issuecomment-317916623
2017-07-28 20:50:30 +00:00
John Ericson
ea7d13cf1a stdenv-setup and misc hooks: Work with bash-3.4 for MacOS nix-shell
This is a temporary measure until this impurity is removed from Nix.
2017-07-26 09:08:01 -04:00
John Ericson
f6f40e3fe5 stdenv-setup and misc pkgs: Revert to space-deliminated propagated-* files
We cannot switch to line-delimited yet, because certain Nix commands do
not read in the entire file, but just the first line.
2017-07-26 09:07:55 -04:00
Eelco Dolstra
47821f1cf0
cc-wrapper: More quadratic performance fixes
This eliminates the slow lookup of whether we've already seen an rpath
/ library path entry.

Issue #27609.
2017-07-25 18:46:49 +02:00
Eelco Dolstra
70d4d22806
cc-wrapper: Add a "man" output
... and propagate cc.man from there.
2017-07-25 16:12:58 +02:00
Eelco Dolstra
b9c403c531
stdenvLinux: Remove bootstrapTools from closure
The "expand-response-params" program had an unnecessary reference to
bootstrapTools, bloating the closure from 205 to 314 MiB.
2017-07-25 14:21:17 +02:00
Eelco Dolstra
aa4a92d2df
cc-wrapper/ld-wrapper: Minor speedup in string concatenation
There is still a O(n) pattern match in ld-wrapper, so we should
probably rewrite that code to use associative arrays.
2017-07-24 14:48:26 +02:00
John Ericson
b087618ac0 Revert "stdenv: Store one package per line in nix-support/propagated-*"
As @oxij points out in [1], this breakage is especially serious because
it changes the contents of built environments without a corresonding
change in their hashes. Also, the revert is easier than I thought.

This reverts commit 3cb745d5a6.

[1]: https://github.com/NixOS/nixpkgs/pull/27427#issuecomment-317293040
2017-07-24 01:05:30 -04:00
John Ericson
3739858571 cc-wrapper: Use new bash uppercase subsitution syntax in setup hook
While this requires newer bash, stdenv's setup.sh now does across the
board anyways. This way is more concise.
2017-07-15 20:33:10 -04:00
John Ericson
093cc00cdd cc-wrapper: Always export environment variables for binutils
Before, this only happened when cross compiling.
2017-07-15 16:01:03 -04:00
John Ericson
aca5ba405e cc-wrapper: Unify and improve dynamic linker flag logic
Besides deduplicating overlapping logic, clear warning messages were
added for:

 - No glob/path for dynamic linker provided (use default glob)

 - Glob did not expand to anything (don't append flag)

 - glob expanded to multiple things (take first, like before)
2017-07-14 15:21:34 -04:00
John Ericson
3cb745d5a6 stdenv: Store one package per line in nix-support/propagated-*
This makes those files a bit easier to read. Also, for what it's worth,
it brings us one baby step closer to handling spaces in store paths.

Also, I optimized handling of many transitive deps with read. Probably,
not very beneficial, but nice to enforce the pkg-per-line structure.
Doing so let me find much dubious code and fix it.

Two misc notes:

 - `propagated-user-env-packages` also needed to be adjusted as
   sometimes it is copied to/from the propagated input files.

 - `local fd` should ensure that file descriptors aren't clobbered
   during recursion.
2017-07-10 13:32:13 -04:00
Daiderd Jordan
980346592c
Merge branch 'staging' into master 2017-07-08 22:22:17 +02:00
John Ericson
a302d7360f top-level: {build,host,target}Platform are defined in the stdenv instead
See #27069 for a discussion of this
2017-07-07 12:55:02 -04:00
Ryan Trinkle
aad0ebb194 cc-wrapper: expand-response-params: fix parsing of quotes that are quoted and escaped 2017-07-03 23:16:10 -04:00
Orivej Desh
2bc7b4e134 cc-wrapper: simplify expandResponseParams parser
Import from b2446902fe
2017-07-03 21:51:23 +00:00
Ryan Trinkle
d07f30f628 cc-wrapper: improve response file parsing speed 2017-06-30 15:20:53 -04:00
John Ericson
16be434b0b Merge accepted cross compilation PRs into staging 2017-06-28 23:17:21 -04:00
John Ericson
c23028bdad cc-wrapper: Also export env var for windres, when it is present 2017-06-28 18:31:37 -04:00
David McFarland
63a1a2ac63 stdenv: disable -fPIC on cygwin
It's always on, and you get a warning if you specify it
2017-06-26 09:33:44 -03:00
Franz Pletz
d42f502c84
Revert "cc-wrapper: add stackcheck hardening (stack clash)"
This reverts commit 4150f5e8ba.

The stack protector hardening breaks the llvm_4 build.
2017-06-26 01:12:38 +02:00
Franz Pletz
a4252649bf
Revert "cc-wrapper: fix darwin"
This reverts commit c3a8595276.

The stack protector hardening breaks the llvm_4 build.
2017-06-26 01:12:11 +02:00
John Ericson
87fab3d6a5 Merge some merged cross-compilation PRs into into staging 2017-06-23 20:24:27 -04:00
John Ericson
12795a7068 misc: Remove almost all uses of stdenv.{ccCross,binutils} 2017-06-22 17:53:52 -04:00
John Ericson
c2e2152afc cc-wrapper: Port over finding of dynamic linker from gcc-cross-wrapper
At the next break, we can deduplicate and go for the best of both
worlds.
2017-06-22 17:53:36 -04:00
John Ericson
0aee847858 cc-wrapper: Make the cross compiler use a crossEnvHook
This is a hack until stdenv's setup.hs gets overhauled
2017-06-22 17:52:29 -04:00
Ross MacLeod
c1fb71b74a cc-wrapper: when cross building, wedge in setting AR, AS, and LD env vars to their cross building versions
I think it's ok to export things which aren't wrapped. The cc-wrapper
can be thought of as responsible for all of binutils and the c
compiler, only wrapping those binaries which are necessary to
interposition---as opposed to all binaries it thinks are relevaant.

Conversely, adding the setup hook to the unwrapped compilers would be
unforunate as hooks are ugly hacks and the compilers themselves take
a long time to rebuild. Better to wholely separate "pure packages" from
hacks.
2017-06-22 17:52:28 -04:00
John Ericson
8a7433fca4 cc-wrapper: Temporarily got to great lengths to avoid mass-rebuild
Eventually we should avoid this "pre-wrapping" and just update those
files in nixpkgs. This mass-rebuild change is best done along with
those needed to reduce the disparity between native and cross (i.e.
making native the "identity cross").
2017-06-22 17:52:28 -04:00
John Ericson
0f0383394d cc-wrapper: Salt environment variables with LLVM triples
We now (on cross) require per-target flag interposition by putting the
triple in the names of the relevant environment variables, e.g:

export NIX_arm_unknown_linux_gnu_CFLAGS_COMPILE=...

The wrapper also has a `infixSalt` attribute (and "_" prefixed and
suffixed variants) to assist downstream packages.

Note how that the dashes are replaced to keep the identifier valid.
Using names like this allows us to keep the settings for different
compilers seperate.

I think it might be even better to use names like `NIX_{BUILD,HOST}...`
using the platform's role rather than the platform itself, but this
would be more work as the previous stages' tools would have to be re-
wrapped to take on their new role. I therefore didn't do this for now,
but that route should be thoroughly explored in the future.
2017-06-22 17:52:28 -04:00
John Ericson
04a3cad968 cc-wrapper: Add support for no libc whatsoever 2017-06-22 17:52:27 -04:00
John Ericson
d70e7263f4 cc-wrapper: Simplify and correct logic to chose dynamic linker library 2017-06-22 17:52:27 -04:00
John Ericson
459f1c60f5 cc-wrapper: Learn about target prefixes
This is first step towards getting rid of gcc-wrapper-cross
2017-06-22 17:52:27 -04:00
John Ericson
c4ba2e3ef6 cc-wrapper: Remove stdenv.is* for targetPlatform.is*
Modify bootstrapping stdenvs to make sure `targetPlatform` also passed.
2017-06-22 17:52:27 -04:00
Franz Pletz
c3a8595276
cc-wrapper: fix darwin
Clang doesn't support -fstack-check=specific, only -fstack-check. Still a
noop, though.
2017-06-22 02:44:04 +02:00