Build of bin86 with musl toolchain

# [tuscan]
# Server = file:///var/cache/pacman/pkg/

# :: Synchronizing package databases...
# downloading tuscan.db...

# /sysroot/lib
# /sysroot/share
# /sysroot/bin
# /sysroot/include
# /sysroot/libexec

# ==> Making package: bin86 0.16.21-1 (Tue Apr 4 23:14:43 UTC 2017)
# ==> Checking runtime dependencies...
# ==> Checking buildtime dependencies...
# ==> WARNING: Using existing $srcdir/ tree
# ==> Starting build()...
# set -e ; for d in ld as; do \
# (cd $d && make "LIBS=" "CFLAGS=-O2 -D_POSIX_SOURCE" "LDFLAGS=" "BINDIR=/usr/bin" "LIBDIR=/usr/lib" "CC=clang" all;); \
# done
# make[1]: Entering directory '/tmp/bin86/src/bin86-0.16.21/ld'
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c dumps.c -o dumps.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c io.c -o io.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c ld.c -o ld.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c readobj.c -o readobj.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c table.c -o table.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c typeconv.c -o typeconv.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c linksyms.c -o linksyms.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c mkar.c -o mkar.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c writex86.c -o writex86.o
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c writebin.c
# clang -O2 -D_POSIX_SOURCE -DREL_OUTPUT -c writeemu.c -o writeemu.o
# clang -O2 -D_POSIX_SOURCE objchop.c -o objchop
# objchop.c:11:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
# main()
# ^
# 1 warning generated.
# clang -O2 -D_POSIX_SOURCE catimage.c -o catimage
# catimage.c:31:2: error: "Compile error: struct exec invalid (long not 32 bit ?)"
# #error "Compile error: struct exec invalid (long not 32 bit ?)"
# ^
# catimage.c:42:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
# main(argc, argv)
# ^
# catimage.c:50:7: warning: implicit declaration of function 'fatal' is invalid in C99 [-Wimplicit-function-declaration]
# fatal("Usage: catimage mem.bin boot.out [a1.out] ... [a9.out]");
# ^
# catimage.c:52:4: warning: implicit declaration of function 'open_obj' is invalid in C99 [-Wimplicit-function-declaration]
# open_obj(argv[2]);
# ^
# catimage.c:57:4: warning: implicit declaration of function 'read_symtable' is invalid in C99 [-Wimplicit-function-declaration]
# read_symtable();
# ^
# catimage.c:67:22: error: invalid operands to binary expression ('char *' and 'int')
# (header.a_text>>4), (header.a_total>>4));
# ~~~~~~~~~~~~~^ ~
# catimage.c:67:43: error: invalid operands to binary expression ('char *' and 'int')
# (header.a_text>>4), (header.a_total>>4));
# ~~~~~~~~~~~~~~^ ~
# catimage.c:72:10: warning: implicit declaration of function 'copy_segment' is invalid in C99 [-Wimplicit-function-declaration]
# copy_segment(image_offset, A_TEXTPOS(header), header.a_text);
# ^
# catimage.c:73:23: warning: incompatible pointer to integer conversion assigning to 'long' from 'char *' [-Wint-conversion]
# image_offset += header.a_text;
# ^ ~~~~~~~~~~~~~
# catimage.c:76:37: warning: implicit declaration of function 'A_DATAPOS' is invalid in C99 [-Wimplicit-function-declaration]
# copy_segment(image_offset, A_DATAPOS(header), header.a_data);
# ^
# catimage.c:81:29: error: invalid operands to binary expression ('char *' and 'char *')
# header.a_text+header.a_data);
# ~~~~~~~~~~~~~^~~~~~~~~~~~~~
# catimage.c:84:7: warning: implicit declaration of function 'patch_bin' is invalid in C99 [-Wimplicit-function-declaration]
# patch_bin(text_offt[image_id], (unsigned)(text_off>>4));
# ^
# catimage.c:87:20: warning: incompatible pointer to integer conversion assigning to 'long' from 'char *' [-Wint-conversion]
# image_offset += header.a_total;
# ^ ~~~~~~~~~~~~~~
# catimage.c:103:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
# open_obj(fname)
# ^
# catimage.c:120:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
# copy_segment(out_offset, in_offset, length)
# ^
# catimage.c:146:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
# patch_bin(file_off, value)
# ^
# catimage.c:166:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
# read_symtable()
# ^
# catimage.c:172:15: warning: comparison of array 'header.a_syms' equal to a null pointer is always false [-Wtautological-pointer-compare]
# if( header.a_syms == 0 )
# ~~~~~~~^~~~~~ ~
# catimage.c:175:19: warning: implicit declaration of function 'A_SYMPOS' is invalid in C99 [-Wimplicit-function-declaration]
# if( fseek(ifd, A_SYMPOS(header), 0) < 0 )
# ^
# catimage.c:178:11: warning: incompatible pointer to integer conversion assigning to 'int' from 'Long' (aka 'char [4]') [-Wint-conversion]
# nitems = header.a_syms;
# ^ ~~~~~~~~~~~~~
# catimage.c:186:11: warning: implicitly declaring library function 'memcmp' with type 'int (const void *, const void *, unsigned long)' [-Wimplicit-function-declaration]
# if( memcmp(item.n_name, "__seg", 5) != 0 || item.n_name[6] != '_' )
# ^
# catimage.c:186:11: note: include the header or explicitly provide a declaration for 'memcmp'
# catimage.c:203:19: warning: incompatible pointer to integer conversion assigning to 'long' from 'Long' (aka 'char [4]') [-Wint-conversion]
# base_off = header.a_text;
# ^ ~~~~~~~~~~~~~
# catimage.c:209:47: warning: incompatible pointer to integer conversion assigning to 'unsigned long' from 'char *' [-Wint-conversion]
# case 'd': data_offt[item.n_name[5]-'0'] = base_off+item.n_value; break;
# ^ ~~~~~~~~~~~~~~~~~~~~~
# catimage.c:210:47: warning: incompatible pointer to integer conversion assigning to 'unsigned long' from 'char *' [-Wint-conversion]
# case 't': text_offt[item.n_name[5]-'0'] = base_off+item.n_value; break;
# ^ ~~~~~~~~~~~~~~~~~~~~~
# catimage.c:237:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
# fatal(str)
# ^
# 21 warnings and 4 errors generated.
# make[1]: *** [: catimage] Error 1
# make[1]: *** Waiting for unfinished jobs....
# make[1]: Leaving directory '/tmp/bin86/src/bin86-0.16.21/ld'
# make: *** [Makefile:28: all] Error 1
# ==> ERROR: A failure occurred in build().
# Aborting...