rdlibtool --tag=CC --silent --mode=link x86_64-pc-linux-gnu-gcc -O2 -pipe -fstack-protector -Wall -Wmissing-prototypes -Wstrict-prototypes -fopenmp -avoid-version -module -Wl,-O1 -Wl,--as-needed -Wl,-z,defs -o sox sox.o libsox.la -lm

x86_64-pc-linux-gnu-gcc: error: .libs/sox.o: No such file or directory
rdlibtool: exec error upon slbt_exec_link_create_library(), line 1566: (see child process error messages).
rdlibtool: < returned to > slbt_exec_link(), line 1957.
make[1]: *** [Makefile:1571: sox] Error 2
make[1]: Leaving directory '/var/tmp/portage/media-sound/sox-14.4.2_p20200803/work/sox-code-50857c46c03a85c72826e819f5e815aad4a4633d/src'
make: *** [Makefile:656: all-recursive] Error 1

bin_PROGRAMS = sox
EXTRA_PROGRAMS = example0 example1 example2 example3 example4 example5 example6 sox_sample_test
lib_LTLIBRARIES = libsox.la
include_HEADERS = sox.h
sox_SOURCES = sox.c
if HAVE_WIN32_GLOB
sox_SOURCES += win32-glob.c win32-glob.h
endif
sox_LDADD = libsox.la