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|
local arch = config.target.platform:match('[^-]*')
set('cflags_auto', {
'-fomit-frame-pointer',
'-fno-unwind-tables',
'-fno-asynchronous-unwind-tables',
'-ffunction-sections',
'-fdata-sections',
})
set('cflags_c99fse', {
'-std=c99',
'-nostdinc',
'-ffreestanding',
'-fexcess-precision=standard',
'-frounding-math',
'-Wa,--noexecstack',
})
set('cflags_nossp', '-fno-stack-protector')
set('cflags_memops', '-fno-tree-loop-distribute-patterns')
cflags{
'$cflags_auto',
'$cflags_c99fse',
'-Wno-return-local-addr',
'-fPIC',
'-D _XOPEN_SOURCE=700',
'-I $srcdir/arch/'..arch,
'-I $srcdir/arch/generic',
'-I $outdir',
'-I $srcdir/src/include',
'-I $srcdir/src/internal',
'-I $outdir/include',
}
set('ldflags', {
'$ldflags',
'-Wl,--sort-section,alignment',
'-Wl,--sort-common',
'-Wl,--gc-sections',
'-Wl,--hash-style=both',
'-Wl,--no-undefined',
'-Wl,--exclude-libs=ALL',
'-Wl,--dynamic-list=$srcdir/dynamic.list',
})
local basefiles = load('base.lua')
local archfiles = load(arch..'.lua')
local bits = {}
for _, hdr in ipairs(archfiles.bits) do
archfiles.bits[hdr] = true
end
for _, hdr in ipairs(basefiles.bits) do
if not archfiles.bits[hdr] then
table.insert(bits, hdr)
end
end
pkg.hdrs = {
copy('$outdir/include', '$srcdir/include', basefiles.hdrs),
copy('$outdir/include/bits', '$srcdir/arch/'..arch..'/bits', archfiles.bits),
copy('$outdir/include/bits', '$srcdir/arch/generic/bits', bits),
'$outdir/include/bits/alltypes.h',
'$outdir/include/bits/syscall.h',
install=true,
}
pkg.deps = {
'$gendir/headers',
'$outdir/version.h',
}
build('sed', '$outdir/include/bits/alltypes.h', {
'$srcdir/arch/'..arch..'/bits/alltypes.h.in',
'$srcdir/include/alltypes.h.in',
'|', '$srcdir/tools/mkalltypes.sed',
}, {expr='-f $srcdir/tools/mkalltypes.sed'})
build('sed', '$outdir/include/bits/syscall.h', {'$srcdir/arch/'..arch..'/bits/syscall.h.in'}, {
expr=[[-n -e 'p;s,__NR_,SYS_,p']],
})
build('awk', '$outdir/version.h', '$dir/ver', {expr=[['{printf "#define VERSION \"%s\"\n", $$1}']]})
local srcs, objs = {}, {}
for src in iterstrings{basefiles.srcs, archfiles.srcs} do
srcs[src:match('(.*)%.'):gsub('/'..arch..'/', '/', 1)] = src
end
local specialcflags = {
-- src/Makefile:/^MEMOPS_OBJS
-- src/Makefile:/^NOSSP_OBJS
__init_tls='$cflags $cflags_nossp',
__libc_start_main='$cflags $cflags_nossp',
__set_thread_area='$cflags $cflags_nossp',
__stack_chk_fail='$cflags $cflags_nossp',
memcpy='$cflags $cflags_memops $cflags_nossp',
memmove='$cflags $cflags_memops',
memset='$cflags $cflags_memops $cflags_nossp',
memcmp='$cflags $cflags_memops',
}
for _, src in pairs(srcs) do
table.insert(objs, cc(src, nil, {cflags=specialcflags[src:match('([^/]*)%.[^/.]*$')]}))
end
table.sort(objs)
ar('libc.a', objs)
file('lib/libc.a', '644', '$outdir/libc.a')
exe('libc.so', {'ldso/dlstart.c', 'ldso/dynlink.c', objs}, nil, {
cflags='$cflags $cflags_nossp',
ldflags='$ldflags -nostdlib -shared -Wl,-e,_dlstart',
ldlibs='-lgcc',
})
file('lib/libc.so', '755', '$outdir/libc.so')
sym('lib/ld-musl-'..arch..'.so.1', 'libc.so')
sym('bin/ldd', '../lib/libc.so')
for _, lib in ipairs{'libm.a', 'librt.a', 'libpthread.a', 'libcrypt.a', 'libutil.a', 'libxnet.a', 'libresolv.a', 'libdl.a'} do
ar(lib, {})
file('lib/'..lib, '644', '$outdir/'..lib)
end
local startfiles = {'$outdir/libc.a'}
for _, src in ipairs{'crt1.c', 'rcrt1.c', 'Scrt1.c', arch..'/crti.s', arch..'/crtn.s'} do
local obj = src:gsub('.-(%w*)%.[cs]$', '%1.o')
local out = '$outdir/'..obj
build('cc', out, {'$srcdir/crt/'..src, '|', '$gendir/deps'}, {cflags='$cflags $cflags_nossp'})
file('lib/'..obj, '644', out)
table.insert(startfiles, out)
end
phony('startfiles', startfiles)
fetch 'git'
|
