Opened 3 years ago

Closed 3 years ago

#4345 closed task (fixed)

Clean up unnecessary environments for libraries in /tools/lib

Reported by: Xi Ruoyao Owned by: lfs-book
Priority: normal Milestone: 8.4
Component: Book Version: SVN
Severity: normal Keywords:
Cc:

Description

Since r11432 we have symlinks to /tools/lib/lib{blkid,lzma,mount,uuid}.so in /usr/lib in section 6.6. So, in e2fsprogs (6.56) testing, LD_LIBRARY_PATH=/tools/lib is no longer needed. And, in eudev (6.72), the config.cache file, LIBRARY_PATH environment and LD_LIBRARY_PATH environment are also no longer needed. We can clean them up.

Tested with LFS-8.3.

Change History (5)

comment:1 by thomas, 3 years ago

for eudev, i simply swapped eudev and util-linux (to build util-linux before eudev) because of -lblkid and dropped the config.cache and LIBRARY_PATH tweaks from eudev.

I needed util-linux to build before eudev because of doing multilib. We added lib{,x}32 build instructions to all those packages in chap6 which are relevant for a multilib environment. A functional multilib environment seems to need lib32-eudev as well as lib32-util-linux. lib32-eudev cannot be build in the current order because there are no libblkid.so in /usr/lib32 (and no need to build them in chap5). So, swapping eudev and utillinux easily solves that issue.

In 'classic' LFS, this is no issue due to the symlinks mentioned above but swapping places would ease live doing multilib as there would not be the need to patch the build-order in multilib-LFS. Doing that should have no impact at all on LFS (neither sysv nor systemd).

in reply to:  1 ; comment:2 by Bruce Dubbs, 3 years ago

Replying to thomas:

for eudev, i simply swapped eudev and util-linux (to build util-linux before eudev) because of -lblkid and dropped the config.cache and LIBRARY_PATH tweaks from eudev.

That's a very good idea. I'll investigate a bit more, but I think that will simplify the eudev page. I do not recall right now what else needs util-linux so I'll experiment with removing it from Chapter 5 completely.

I needed util-linux to build before eudev because of doing multilib.

I'm curious what 32-bit packages would need eudev (libeudev). Is it really necessary to have a 32-bit version?

in reply to:  2 comment:3 by thomas, 3 years ago

Replying to bdubbs:

Replying to thomas: ...

I needed util-linux to build before eudev because of doing multilib.

I'm curious what 32-bit packages would need eudev (libeudev). Is it really necessary to have a 32-bit version?

I've a driver for my laser printer which is (the driver) only available as 32bit executable. Tracking down the dependencies I found

[thomas@ganymed Dell-C2665-Color-MFP]$ ldd DLPSACJFilter 
	linux-gate.so.1 (0xf7fb0000)
	libcups.so.2 => /usr/lib32/libcups.so.2 (0xf7ed3000)
	libc.so.6 => /usr/lib32/libc.so.6 (0xf7cf6000)
	libgnutls.so.30 => /usr/lib32/libgnutls.so.30 (0xf7b2c000)
	libpthread.so.0 => /usr/lib32/libpthread.so.0 (0xf7b0b000)
	libm.so.6 => /usr/lib32/libm.so.6 (0xf7a3e000)
	libcrypt.so.1 => /usr/lib32/libcrypt.so.1 (0xf7a0b000)
	libz.so.1 => /usr/lib32/libz.so.1 (0xf79f2000)
	/lib/ld-linux.so.2 => /usr/lib/ld-linux.so.2 (0xf7fb2000)
	libp11-kit.so.0 => /usr/lib32/libp11-kit.so.0 (0xf78b0000)
	libidn.so.11 => /usr/lib32/libidn.so.11 (0xf787c000)
	libtasn1.so.6 => /usr/lib32/libtasn1.so.6 (0xf7867000)
	libnettle.so.6 => /usr/lib32/libnettle.so.6 (0xf782a000)
	libhogweed.so.4 => /usr/lib32/libhogweed.so.4 (0xf77f1000)
	libgmp.so.10 => /usr/lib32/libgmp.so.10 (0xf7767000)
	libffi.so.6 => /usr/lib32/libffi.so.6 (0xf775e000)
	libdl.so.2 => /usr/lib32/libdl.so.2 (0xf7758000)

and libcups uses libusb which in turn uses libudev. I've not yet tracked down if there might be configure options to get rid of this dependencies but i take it as training for doing multilib-BLFS ...

in reply to:  2 comment:4 by Xi Ruoyao, 3 years ago

Replying to bdubbs:

Replying to thomas:

for eudev, i simply swapped eudev and util-linux (to build util-linux before eudev) because of -lblkid and dropped the config.cache and LIBRARY_PATH tweaks from eudev.

That's a very good idea. I'll investigate a bit more, but I think that will simplify the eudev page. I do not recall right now what else needs util-linux so I'll experiment with removing it from Chapter 5 completely.

Systemd needs util-linux and I am not sure if we can build util-linux before systemd in Chapter 6.

comment:5 by Bruce Dubbs, 3 years ago

Resolution: fixed
Status: newclosed

Fixed at revision 11472.

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