Bug 542026

Summary:	dev-libs/gobject-introspection-1.40.0-r2 compile error exec: ldd: not found on hardened/musl
Product:	Gentoo Linux	Reporter:	Cato Auestad <cato>
Component:	Hardened	Assignee:	Anthony Basile <blueness>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	430702
Attachments:	Patch for the ebuild to create symlink emerge --info Build log

Description Cato Auestad 2015-03-03 17:25:03 UTC

Created attachment 397958 [details, diff]
Patch for the ebuild to create symlink

This bug should be assigned to blueness@gentoo.org who maintains the musl overlay.

dev-libs/gobject-introspection-1.40.0-r2 fails to install because "ldd" is not found. By looking at musl FAQ[0] they recommend creating a symlink between /lib/ld-musl-$ARCH.so and /bin/ldd.

I tried this on a musl stage 3 installation (/lib/ld-musl-x86_64.so.1 -> /bin/ldd) and gobject-introspection compiled successfully. I suppose the symlink should be included in the stage3 tarball in the future. As a temporary solution, I have attached a small patch to the ebuild file which does the symlinking for me. I have tested it on hardened/musl x86_64.

[0] http://wiki.musl-libc.org/wiki/FAQ#Q:_where_is_ldd_.3F

Summary of the compile error:
-----------------------------------------------------------
libtool: link: x86_64-gentoo-linux-musl-gcc -o /var/tmp/portage/dev-libs/gobject-introspection-1.40.0-r2/work/gobject-introspection-1.40.0/tmp-introspectGntyyM/GLib-2.0 -fno-strict-aliasing -Wsign-compare -Wcast-align -Wpointer-arith -Wnested-externs -Wmissing-prototypes -Wmissing-declarations -Wchar-subscripts -Wall -O2 -pipe -fomit-frame-pointer -Wl,-O1 /var/tmp/portage/dev-libs/gobject-introspection-1.40.0-r2/work/gobject-introspection-1.40.0/tmp-introspectGntyyM/GLib-2.0.o -Wl,--export-dynamic -pthread -Wl,--export-dynamic  -Wl,--as-needed -lgio-2.0 -lgmodule-2.0 -lglib-2.0 -lgobject-2.0 -pthread
./libtool: line 10066: exec: ldd: not found
ERROR: can't resolve libraries to shared libraries: gobject-2.0, glib-2.0
Makefile:3386: recipe for target 'GLib-2.0.gir' failed

Comment 1 Cato Auestad 2015-03-03 17:25:37 UTC

Created attachment 397960 [details]
emerge --info

Comment 2 Cato Auestad 2015-03-03 17:25:54 UTC

Created attachment 397962 [details]
Build log

Comment 3 Anthony Basile gentoo-dev

2015-03-07 21:13:16 UTC

(In reply to Cato Auestad from comment #0)
> Created attachment 397958 [details, diff] [details, diff]
> Patch for the ebuild to create symlink
> 

Unfortunately `uname -m` won't work.  musl's idea of an arch is whatever is under $(musl source)/arch directory.  So for $(uname -m) == i686 you need i386 :(

I've opted to proceed as follows:

@@ -84,6 +84,10 @@
 	if is_crosscompile ; then
 		dosym usr/include /usr/${CTARGET}/sys-include
 	fi
+
+	# musl provides ldd via a sym link to its ld.so
+	local ldso=$(basename ${D}/lib/ld-musl-*)
+	dosym /lib/${ldso} /usr/bin/ldd
 }
 
 pkg_postinst() {


I've added this to musl-9999.ebuild and will push it out with the 1.1.7 releases.  The real test will be to see if to works on the mipsel3 and armv7a stage3's.  (There's also felix's mips32r2 and ppc which have some issues I have yet to track down.)

Pleaes reopen if this is still a problem for you, or it doesn't work for some reason.