musl: Add aliases for glibc provided libraries

This is a step towards running pebuilt applications for glibc  on musl
There are many realworld applications which are not always built from
source, especially provided by third party

Package the glibc symlinks into new package musl-glibc-compat

(From OE-Core rev: 8ea0680462c506e01244d3fd3d35e6b2f805ada6)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/musl/musl_git.bb

@@ -2,6 +2,7 @@
 # Released under the MIT license (see COPYING.MIT for the terms)
 
 require musl.inc
+inherit linuxloader
 
 SRCREV = "0fa1e638e87cf257e9f96b4019b2076afd674a19"
 
@@ -26,6 +27,7 @@ DEPENDS = "virtual/${TARGET_PREFIX}binutils \
            bsd-headers \
            libssp-nonshared \
           "
+GLIBC_LDSO = "${@get_glibc_loader(d)}"
 
 export CROSS_COMPILE="${TARGET_PREFIX}"
 
@@ -62,12 +64,26 @@ do_install() {
 	install -d ${D}${bindir}
 	rm -f ${D}${bindir}/ldd
 	lnr ${D}${libdir}/libc.so ${D}${bindir}/ldd
+	lnr ${D}${libdir}/libc.so ${D}${GLIBC_LDSO}
 	for l in crypt dl m pthread resolv rt util xnet
 	do
 		ln -sf libc.so ${D}${libdir}/lib$l.so
 	done
+	for i in libc.so.6 libcrypt.so.1 libdl.so.2 libm.so.6 libpthread.so.0 libresolv.so.2 librt.so.1 libutil.so.1; do
+		ln -sf libc.so ${D}${libdir}/$i
+	done
 }
 
+PACKAGES =+ "${PN}-glibc-compat"
+
+FILES_${PN}-glibc-compat += "\
+                ${libdir}/libc.so.6 ${libdir}/libcrypt.so.1 \
+                ${libdir}/libdl.so.2 ${libdir}/libm.so.6 \
+                ${libdir}/libpthread.so.0 ${libdir}/libresolv.so.2 \
+                ${libdir}/librt.so.1 ${libdir}/libutil.so.1 \
+                ${GLIBC_LDSO} \
+                "
+
 RDEPENDS_${PN}-dev += "linux-libc-headers-dev bsd-headers-dev libssp-nonshared-staticdev"
 RPROVIDES_${PN}-dev += "libc-dev virtual-libc-dev"
 RPROVIDES_${PN} += "ldd libsegfault rtld(GNU_HASH)"