[Buildroot] toolchain-external: ld.so* vs ld.so.*
Thomas De Schampheleire
thomas.de_schampheleire at nokia.com
Wed Mar 7 12:26:47 UTC 2018
Hi Thomas,
I have a question on following commit:
commit 32bec8ee2fb00c6750fa842bbb0eb79b0c081fa2
Author: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Date: Sun Jul 2 15:14:17 2017 +0200
toolchain-external: copy ld*.so* for all C libraries
in which the base value of TOOLCHAIN_EXTERNAL_LIBS changed: (snippet)
+
+TOOLCHAIN_EXTERNAL_LIBS += ld*.so*
+
[..]
-ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC)$(BR2_ARM_EABIHF),yy)
-TOOLCHAIN_EXTERNAL_LIBS += ld-linux-armhf.so.*
-else
-TOOLCHAIN_EXTERNAL_LIBS += ld*.so.*
-endif
The question is: did you intentionally remove the . before the final asterisk?
I.e. why is it not:
TOOLCHAIN_EXTERNAL_LIBS += ld*.so.*
as was the case before, even for the glibc+eabihf case?
I could not find a reference to why that specific change was made.
Background is that I now notice (after upgrading to 2018.02 coming from
2017.02.x) that an extra file is copied on my target system: the system used to
have just '/lib/ld.so.1' which is also what is encoded in the ELF files as
dynamic loader, but now there is also '/lib/ld-2.20.so' which is not actually
used and is non-stripped (due to an exception in target-finalize).
This adds about 150K on the root filesystem, which is quite a lot for an unused
file.
So I wonder what would be wrong with following patch:
diff --git a/toolchain/toolchain-external/pkg-toolchain-external.mk b/toolchain/toolchain-external/pkg-toolchain-external.mk
--- a/toolchain/toolchain-external/pkg-toolchain-external.mk
+++ b/toolchain/toolchain-external/pkg-toolchain-external.mk
@@ -108,7 +108,7 @@ endif
# Definitions of the list of libraries that should be copied to the target.
#
-TOOLCHAIN_EXTERNAL_LIBS += ld*.so* libgcc_s.so.* libatomic.so.*
+TOOLCHAIN_EXTERNAL_LIBS += ld*.so.* libgcc_s.so.* libatomic.so.*
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC)$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y)
TOOLCHAIN_EXTERNAL_LIBS += libc.so.* libcrypt.so.* libdl.so.* libm.so.* libnsl.so.* libresolv.so.* librt.so.* libutil.so.*
Thanks,
Thomas
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