Your `libtool` seems okay. The error message complains as if `wl=“-Wl,` was lost during libtool linking, which I don’t understand how. Could you manually compile and attach the last part of log from `make V=1`? — Hui Zhou On Nov 7, 2019, at 11:40 AM, Je Iaa <[email protected]<mailto:[email protected]>> wrote: Hi again, You will find below the output of this command. Regards, J ------------------------------------------------------------- ./libtool --config ... # The linker used to build libraries. LD="/usr/bin/ld -m elf_x86_64" # How to create reloadable object files. reload_flag=" -r" reload_cmds="\$LD\$reload_flag -o \$output\$reload_objs" # Commands used to build an old-style archive. old_archive_cmds="\$AR \$AR_FLAGS \$oldlib\$oldobjs~\$RANLIB \$tool_oldlib" # A language specific compiler. CC="clang" # Is the compiler the GNU compiler? with_gcc=yes # Compiler flag to turn off builtin functions. no_builtin_flag=" -fno-builtin -fno-rtti -fno-exceptions" # Additional compiler flags for building library objects. pic_flag=" -fPIC -DPIC" # How to pass a linker flag through the compiler. wl="-Wl," # Compiler flag to prevent dynamic linking. link_static_flag="" # Does compiler simultaneously support -c and -o options? compiler_c_o="yes" # Whether or not to add -lc for building shared libraries. build_libtool_need_lc=no # Whether or not to disallow shared libs when runtime libs are static. allow_libtool_libs_with_static_runtimes=no # Compiler flag to allow reflexive dlopens. export_dynamic_flag_spec="\$wl--export-dynamic" # Compiler flag to generate shared objects directly from archives. whole_archive_flag_spec="\$wl--whole-archive\$convenience \$wl--no-whole-archive" # Whether the compiler copes with passing no objects directly. compiler_needs_object="no" # Create an old-style archive from a shared archive. old_archive_from_new_cmds="" # Create a temporary old-style archive to link instead of a shared archive. old_archive_from_expsyms_cmds="" # Commands used to build a shared archive. archive_cmds="\$CC -shared \$pic_flag \$libobjs \$deplibs \$compiler_flags \$wl-soname \$wl\$soname -o \$lib" archive_expsym_cmds="echo \\\"{ global:\\\" > \$output_objdir/\$libname.ver~ cat \$export_symbols | sed -e \\\"s/\\\\(.*\\\\)/\\\\1;/\\\" >> \$output_objdir/\$libname.ver~ echo \\\"local: *; };\\\" >> \$output_objdir/\$libname.ver~ \$CC -shared \$pic_flag \$libobjs \$deplibs \$compiler_flags \$wl-soname \$wl\$soname \$wl-version-script \$wl\$output_objdir/\$libname.ver -o \$lib" ...