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authorJakub Kądziołka <kuba@kadziolka.net>2020-07-30 02:21:54 +0200
committerJakub Kądziołka <kuba@kadziolka.net>2020-09-19 15:43:03 +0200
commite0f31baacc6ad30096a332b69433c85f5830bb2c (patch)
tree9a832fcf2abc48e979062597aa47f57ad75d6b73
parentf32a6055a5d67b48abc74fb69652fab1a2058ffe (diff)
downloadguix-e0f31baacc6ad30096a332b69433c85f5830bb2c.tar.gz
build-system/gnu: strip with --strip-unneeded [v2]
[Accidentally pushed patch v1, this commit contains the rest of the
changes. Revised commit message follows.]

Apart from debug information, one can also strip some symbols. This can
be a significant difference, the closure of gcc-toolchain@7 got reduced
by 15 MB in my tests.

As per [1], --strip-debug is included in --strip-unneeded, and
the debug files created also contain a copy of the information removed
by --strip-unneeded.

Linux From Scratch suggests that this option shouldn't be used on static
libraries [2], however other sources [3] indicate otherwise. Building a
toolchain with this patch succeeds, and the result works fine for
'gcc -static hello-world.c'.

[1]: https://stackoverflow.com/a/52555093
[2]: http://www.linuxfromscratch.org/lfs/view/9.1/chapter05/stripping.html
[3]: https://www.technovelty.org/linux/stripping-shared-libraries.html

* guix/build/gnu-build-system.scm (strip): Use --strip-unneeded.
* guix/build-system/gnu.scm (static-package, gnu-build, gnu-cross-build): Likewise.
-rw-r--r--guix/build-system/gnu.scm6
1 files changed, 3 insertions, 3 deletions
diff --git a/guix/build-system/gnu.scm b/guix/build-system/gnu.scm
index 6b481ad45c..2c23197e77 100644
--- a/guix/build-system/gnu.scm
+++ b/guix/build-system/gnu.scm
@@ -215,7 +215,7 @@ use `--strip-all' as the arguments to `strip'."
     (arguments
      (let ((a (default-keyword-arguments (package-arguments p)
                 '(#:configure-flags '()
-                  #:strip-flags '("--strip-debug")))))
+                  #:strip-flags '("--strip-unneeded")))))
        (substitute-keyword-arguments a
          ((#:configure-flags flags)
           `(cons* "--disable-shared" "LDFLAGS=-static" ,flags))
@@ -337,7 +337,7 @@ standard packages used as implicit inputs of the GNU build system."
                     (parallel-tests? #t)
                     (patch-shebangs? #t)
                     (strip-binaries? #t)
-                    (strip-flags ''("--strip-debug"
+                    (strip-flags ''("--strip-unneeded"
                                     "--enable-deterministic-archives"))
                     (strip-directories ''("lib" "lib64" "libexec"
                                           "bin" "sbin"))
@@ -492,7 +492,7 @@ is one of `host' or `target'."
                           (parallel-build? #t) (parallel-tests? #t)
                           (patch-shebangs? #t)
                           (strip-binaries? #t)
-                          (strip-flags ''("--strip-debug"
+                          (strip-flags ''("--strip-unneeded"
                                           "--enable-deterministic-archives"))
                           (strip-directories ''("lib" "lib64" "libexec"
                                                 "bin" "sbin"))