[oe] [meta-initramfs][PATCH 1/6] cross-compiler-ldd: add new recipe

[Böszörményi Zoltán]

dracut runs ldd internally when discovering library dependencies
for executables. cross-compiler-ldd is needed so dracut may
eventually run while creating the rootfs.

Signed-off-by: Böszörményi Zoltán <zboszor at pr.hu>
---
 .../cross-compile-ldd-fix-infinite-loop.patch | 19 +++++++++++
 .../dracut/cross-compiler-ldd_git.bb          | 33 +++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd/cross-compile-ldd-fix-infinite-loop.patch
 create mode 100644 meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd_git.bb

diff --git a/meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd/cross-compile-ldd-fix-infinite-loop.patch b/meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd/cross-compile-ldd-fix-infinite-loop.patch
new file mode 100644
index 000000000..4aae731d1
--- /dev/null
+++ b/meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd/cross-compile-ldd-fix-infinite-loop.patch
@@ -0,0 +1,19 @@
+diff --git a/cross-compile-ldd b/cross-compile-ldd
+index ef2ca20..332d57f 100644
+--- a/cross-compile-ldd
++++ b/cross-compile-ldd
+@@ -337,13 +337,13 @@ do_scan_etc_ldsoconf() {
+ # Build up the full list of search directories
+ declare -a needed_search_path
+ do_trace "Adding basic lib dirs\n"
+-ld_library_path="${ld_library_path}:"
+ while [ -n "${ld_library_path}" ]; do
+     d="${ld_library_path%%:*}"
+     if [ -n "${d}" ]; then
+         do_trace "-> adding search dir '%s'\n" "${d}"
+         needed_search_path+=( "${d}" )
+     fi
++    [[ "$ld_library_path" == "${ld_library_path#*:}" ]] && break
+     ld_library_path="${ld_library_path#*:}"
+ done
+ do_trace "Done adding basic lib dirs\n"
diff --git a/meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd_git.bb b/meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd_git.bb
new file mode 100644
index 000000000..f8b7906ea
--- /dev/null
+++ b/meta-initramfs/recipes-devtools/dracut/cross-compiler-ldd_git.bb
@@ -0,0 +1,33 @@
+SUMMARY = "Cross-compiler LDD"
+HOMEPAGE = "https://gist.github.com/c403786c1394f53f44a3b61214489e6f"
+BUGTRACKER = ""
+LICENSE = "GPLv2"
+
+LIC_FILES_CHKSUM = "file://cross-compile-ldd;beginline=53;endline=57;md5=2b29d19d18a430b931dda3750e865c84"
+
+SRCBRANCH = "master"
+SRCREV = "eb44581caf7dd60b149a6691abef46264c46e866"
+SRC_URI = " \
+			git://gist.github.com/c403786c1394f53f44a3b61214489e6f.git;protocol=https;branch=${SRCBRANCH} \
+			file://cross-compile-ldd-fix-infinite-loop.patch \
+		"
+
+S = "${WORKDIR}/git"
+
+inherit siteinfo
+
+SYSROOT_PREPROCESS_FUNCS += " cross_ldd_populate_sysroot "
+
+cross_ldd_populate_sysroot() {
+	mkdir -p ${SYSROOT_DESTDIR}${bindir_crossscripts}
+	cat ${S}/cross-compile-ldd | \
+		sed \
+			-e "s,^prefix=.*$,prefix=${TARGET_SYS}," \
+			-e "s,^bits=.*$,bits=${SITEINFO_BITS}," \
+			-e "s,^ld_library_path=.*$,ld_library_path=${LD_LIBRARY_PATH:-/lib:/usr/lib}," \
+		>${SYSROOT_DESTDIR}${bindir_crossscripts}/ldd
+	chmod +x ${SYSROOT_DESTDIR}${bindir_crossscripts}/ldd
+}
+
+DEPENDS = "coreutils-native sed-native binutils-cross-${TARGET_ARCH} gcc-cross-${TARGET_ARCH}"
+PACKAGE_WRITE_DEPS = "coreutils-native sed-native binutils-cross-${TARGET_ARCH} gcc-cross-${TARGET_ARCH}"
-- 
2.20.1