checking for error.h... no checking for error... no checking whether error_at_line is declared... no checking whether strerror_r is declared... yes checking whether strerror_r returns char *... no checking whether malloc, realloc, calloc set errno on failure... yes checking whether strerror(0) succeeds... yes checking for C compiler option to allow warnings... -Wno-error checking whether the -Werror option is usable... yes checking for working strerror function... yes checking whether C compiler handles -Werror -Wunknown-warning-option... no CFLAGS: -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt WERROR_CFLAGS: WERROR_TESTS_CFLAGS: GEN error.h CC libgnu_la-error.lo CC error.lo cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: data.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: version.lo] Error 1 make[3]: *** [Makefile:1900: free.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: bidi.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: tables.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: error.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: context.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: idna.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: tr46map.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: register.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: decode.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: punycode.lo] Error 1 cc: error: \@-DSRCDIR="."\: linker input file not found: No such file or directory make[3]: *** [Makefile:1900: lookup.lo] Error 1 make[2]: *** [Makefile:1783: all] Error 2 make[1]: *** [Makefile:1901: all-recursive] Error 1 make: *** [Makefile:1809: all] Error 2 >>> ERROR: libidn2: build failed