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[bug#42555] [PATCH v2 core-updates] build-system/gnu: strip with --strip
From: |
Jakub Kądziołka |
Subject: |
[bug#42555] [PATCH v2 core-updates] build-system/gnu: strip with --strip-unneeded |
Date: |
Thu, 30 Jul 2020 02:21:54 +0200 |
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.
---
I have realized that my previous patch was a no-op due to default values
for arguments being scattered across files. I ran my builds again and
now I can observe results in the earlier stages of the toolchain,
accessible to a testing core-updates build.
guix/build-system/gnu.scm | 6 +++---
guix/build/gnu-build-system.scm | 2 +-
2 files changed, 4 insertions(+), 4 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"))
diff --git a/guix/build/gnu-build-system.scm b/guix/build/gnu-build-system.scm
index 2e7dff2034..d3347c9518 100644
--- a/guix/build/gnu-build-system.scm
+++ b/guix/build/gnu-build-system.scm
@@ -425,7 +425,7 @@ makefiles."
(objcopy-command (if target
(string-append target "-objcopy")
"objcopy"))
- (strip-flags '("--strip-debug"
+ (strip-flags '("--strip-unneeded"
"--enable-deterministic-archives"))
(strip-directories '("lib" "lib64" "libexec"
"bin" "sbin"))
--
2.28.0