Automatic generation of circular deps sucks

As part of work I need to get libelf and libdwarf in one rootfs. So I started with split of elfutils into separate packages. After some rebuilds and checking how it got sorted out in Debian I got version in attachment working.

So I started build of rootfs:

| * check_data_file_clashes: Package libdw-dev wants to install file /home/hrw/HDD/devel/canonical/aarch64/openembedded/build/tmp-eglibc/work/genericarmv8-oe-linux/linaro-image-sdk/1.0-r2/rootfs/usr/include/dwarf.h
| But that file is already provided by package * libdwarf-dev

WTH? was my first though. So I checked deeper...

Libdwarf (recipe) DEPENDS on elfutils and gives static library in libdwarf-staticdev package, headers in libdwarf-dev package. OK, it works. So I looked at dependencies of resulting packages.

Why libdwarf-dev recommends elfutils-dev is beyond my knowledge...

In effect installing libdwarf-dev fetches elfutils-dev which fetches libdw-dev which conflicts with libdwarf-dev. Magically without any RRECOMMENDS_${PN}-dev = "elfutils-dev" in libdwarf recipe...

What is wrong and how to fix it?

From d0b2edecbe66e6e9721f14ac84abdf8e8c82cad4 Mon Sep 17 00:00:00 2001
From: Marcin Juszkiewicz <[email protected]>
Date: Thu, 17 Jan 2013 11:44:40 +0100
Subject: [PATCH] elfutils: split libraries into separate packages

libdw-dev conflicts with libdwarf-dev

---
 meta/recipes-devtools/elfutils/elfutils_0.148.bb | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

index 45931b0..8bd32f8 100644
@@ -6,7 +6,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=0636e73ff0215e8d672dc4c32c317bb3\
                     file://EXCEPTION;md5=570adcb0c1218ab57f2249c67d0ce417"
 DEPENDS = "libtool bzip2 zlib virtual/libintl"
 
-PR = "r9"
+PR = "r10"
 
 SRC_URI = "https://fedorahosted.org/releases/e/l/elfutils/elfutils-${PV}.tar.bz2"
 

@@ -66,7 +66,7 @@ EXTRA_OEMAKE_class-nativesdk = ""
 BBCLASSEXTEND = "native nativesdk"
 
 # Package utilities separately
-PACKAGES =+ "${PN}-binutils"
+PACKAGES =+ "${PN}-binutils libelf libasm libdw libdw-dev libasm-dev libelf-dev"
 FILES_${PN}-binutils = "\
     ${bindir}/eu-addr2line \
     ${bindir}/eu-ld \

@@ -75,11 +75,16 @@ FILES_${PN}-binutils = "\
     ${bindir}/eu-size \
     ${bindir}/eu-strip"
 
+FILES_libelf = "${libdir}/libelf-${PV}.so ${libdir}/libelf.so.*"
+FILES_libasm = "${libdir}/libasm-${PV}.so ${libdir}/libasm.so.*"
+FILES_libdw  = "${libdir}/libdw-${PV}.so ${libdir}/libdw.so.* ${libdir}/elfutils/lib*"
+FILES_libelf-dev = "${libdir}/libelf.so ${includedir}"
+FILES_libasm-dev = "${libdir}/libasm.so ${includedir}/elfutils/libasm.h"
+FILES_libdw-dev  = "${libdir}/libdw.so  ${includedir}/dwarf.h ${includedir}/elfutils/libdw*.h"
 # Some packages have the version preceeding the .so instead properly
 # versioned .so.<version>, so we need to reorder and repackage.
-FILES_${PN} += "${libdir}/*-${PV}.so ${base_libdir}/*-${PV}.so"
-FILES_SOLIBSDEV = "${libdir}/libasm.so ${libdir}/libdw.so ${libdir}/libelf.so"
+#FILES_${PN} += "${libdir}/*-${PV}.so ${base_libdir}/*-${PV}.so"
+#FILES_SOLIBSDEV = "${libdir}/libasm.so ${libdir}/libdw.so ${libdir}/libelf.so"
 
 # The package contains symlinks that trip up insane
-INSANE_SKIP_${PN} = "dev-so"
-
+INSANE_SKIP_libdw = "dev-so"

1.8.0

This has always been the case. -dev/-dbg use depchains to pull in their corresponding packages of the DEPENDS of the main package, to ensure that all the necessary development or debugging files are available, as far as I know. Grep around for depchains, you'll see the code, but it's mostly handled at line 1716 (package_depchains) of package.bbclass.

Christopher Larson