Fix up ld.so symlinks for musl

Convert absolute targets to relative so that they are valid on the host,
too. The procedure is very similar to uclibc, so it is moved into a
common function.

Signed-off-by: Alexey Neyman <stilor@att.net>

2 files changed, 4 insertions, 48 deletions

diff --git a/scripts/build/libc/musl.sh b/scripts/build/libc/musl.sh
index 3d6fe04..5a53fd0 100644
--- a/scripts/build/libc/musl.sh
+++ b/scripts/build/libc/musl.sh
@@ -29,7 +29,9 @@ do_libc() {
 }
 
 do_libc_post_cc() {
-    :
+    # MUSL creates dynamic linker symlink with absolute path - which works on the
+    # target but not on the host. We want our cross-ldd tool to work.
+    CT_MultilibFixupLDSO
 }
 
 do_libc_backend() {
diff --git a/scripts/build/libc/uClibc.sh b/scripts/build/libc/uClibc.sh
index fcabee8..9f1eb37 100644
--- a/scripts/build/libc/uClibc.sh
+++ b/scripts/build/libc/uClibc.sh
@@ -453,51 +453,5 @@ do_libc_post_cc() {
     # file in /lib. Thus, need to do this after all the variants are built.
     # Moreover, need to do this after the final compiler is built: on targets
     # that use elf2flt, the core compilers cannot find ld when running elf2flt.
-    CT_DoStep INFO "Checking dynamic linker symlinks"
-    CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-post_cc"
-    echo "int main(void) { return 0; }" > test-ldso.c
-    CT_IterateMultilibs do_libc_ldso_fixup ldso_fixup
-    CT_Popd
-    CT_EndStep
-}
-
-do_libc_ldso_fixup() {
-    local multi_dir multi_os_dir multi_root multi_flags multi_index multi_count
-    local binary
-    local ldso ldso_f ldso_d multilib_dir
-
-    for arg in "$@"; do
-        eval "${arg// /\\ }"
-    done
-
-    CT_DoLog EXTRA "Checking dynamic linker for multilib '${multi_flags}'"
-
-    multilib_dir="/lib/${multi_os_dir}"
-    CT_SanitizeVarDir multilib_dir
-
-    CT_DoExecLog ALL "${CT_TARGET}-${CT_CC}" -o test-ldso ../test-ldso.c ${multi_flags}
-    if [ -r "test-ldso.gdb" ]; then
-        binary="test-ldso.gdb"
-    else
-        binary="test-ldso"
-    fi
-    if ${CT_TARGET}-readelf -Wl "${binary}" | grep -q 'Requesting program interpreter: '; then
-        ldso=$( ${CT_TARGET}-readelf -Wl "${binary}" | \
-            grep 'Requesting program interpreter: ' | \
-            sed -e 's,.*: ,,' -e 's,\].*,,' )
-    fi
-    CT_DoLog DEBUG "Detected dynamic linker for multilib '${multi_flags}': '${ldso}'"
-
-    ldso_d="${ldso%/ld*.so.*}"
-    ldso_f="${ldso##*/}"
-    # Create symlink if GCC produced an executable, dynamically linked, it was requesting
-    # a linker not in the current directory, and there is no such file in the expected
-    # ldso dir.
-    if [ -n "${ldso}" -a "${ldso_d}" != "${multilib_dir}" -a ! -r "${multi_root}${ldso}" ]; then
-        # Convert ldso_d to "how many levels we need to go up" and remove
-        # leading slash.
-        ldso_d=$( echo "${ldso_d#/}" | sed 's,[^/]\+,..,g' )
-        CT_DoExecLog ALL ln -sf "${ldso_d}${multilib_dir}/${ldso_f}" \
-            "${multi_root}${ldso}"
-    fi
+    CT_MultilibFixupLDSO
 }