// init handles initialization of the various global state, like goroot and goarch.
void
init(void)
{
char *p;
int i;
Buf b;
binit(&b);
xgetenv(&b, "GOROOT");
if(b.len > 0) {
// if not "/", then strip trailing path separator
if(b.len >= 2 && b.p[b.len - 1] == slash[0])
b.len--;
goroot = btake(&b);
}
xgetenv(&b, "GOBIN");
if(b.len == 0)
bprintf(&b, "%s%sbin", goroot, slash);
gobin = btake(&b);
xgetenv(&b, "GOOS");
if(b.len == 0)
bwritestr(&b, gohostos);
goos = btake(&b);
if(find(goos, okgoos, nelem(okgoos)) < 0)
fatal("unknown $GOOS %s", goos);
xgetenv(&b, "GOARM");
if(b.len == 0)
bwritestr(&b, xgetgoarm());
goarm = btake(&b);
xgetenv(&b, "GO386");
if(b.len == 0) {
if(cansse2())
bwritestr(&b, "sse2");
else
bwritestr(&b, "387");
}
go386 = btake(&b);
p = bpathf(&b, "%s/include/u.h", goroot);
if(!isfile(p)) {
fatal("$GOROOT is not set correctly or not exported\n"
"\tGOROOT=%s\n"
"\t%s does not exist", goroot, p);
}
xgetenv(&b, "GOHOSTARCH");
if(b.len > 0)
gohostarch = btake(&b);
i = find(gohostarch, okgoarch, nelem(okgoarch));
if(i < 0)
fatal("unknown $GOHOSTARCH %s", gohostarch);
bprintf(&b, "%c", gochars[i]);
gohostchar = btake(&b);
xgetenv(&b, "GOARCH");
if(b.len == 0)
bwritestr(&b, gohostarch);
goarch = btake(&b);
i = find(goarch, okgoarch, nelem(okgoarch));
if(i < 0)
fatal("unknown $GOARCH %s", goarch);
bprintf(&b, "%c", gochars[i]);
gochar = btake(&b);
xgetenv(&b, "GO_EXTLINK_ENABLED");
if(b.len > 0) {
goextlinkenabled = btake(&b);
if(!streq(goextlinkenabled, "0") && !streq(goextlinkenabled, "1"))
fatal("unknown $GO_EXTLINK_ENABLED %s", goextlinkenabled);
}
xgetenv(&b, "CC");
if(b.len == 0) {
// Use clang on OS X, because gcc is deprecated there.
// Xcode for OS X 10.9 Mavericks will ship a fake "gcc" binary that
// actually runs clang. We prepare different command
// lines for the two binaries, so it matters what we call it.
// See golang.org/issue/5822.
if(defaultclang)
bprintf(&b, "clang");
else
bprintf(&b, "gcc");
}
defaultcc = btake(&b);
xgetenv(&b, "CFLAGS");
defaultcflags = btake(&b);
xgetenv(&b, "LDFLAGS");
defaultldflags = btake(&b);
xgetenv(&b, "CC_FOR_TARGET");
if(b.len == 0) {
bprintf(&b, defaultcc);
}
defaultcctarget = btake(&b);
xgetenv(&b, "CXX_FOR_TARGET");
if(b.len == 0) {
xgetenv(&b, "CXX");
if(b.len == 0) {
if(defaultclang)
bprintf(&b, "clang++");
else
bprintf(&b, "g++");
}
}
defaultcxxtarget = btake(&b);
xsetenv("GOROOT", goroot);
xsetenv("GOARCH", goarch);
xsetenv("GOOS", goos);
xsetenv("GOARM", goarm);
xsetenv("GO386", go386);
// Make the environment more predictable.
xsetenv("LANG", "C");
xsetenv("LANGUAGE", "en_US.UTF8");
goversion = findgoversion();
workdir = xworkdir();
xatexit(rmworkdir);
bpathf(&b, "%s/pkg/tool/%s_%s", goroot, gohostos, gohostarch);
tooldir = btake(&b);
bfree(&b);
}
// init handles initialization of the various global state, like goroot and goarch.
void
init(void)
{
char *p;
int i;
Buf b;
binit(&b);
xgetenv(&b, "GOROOT");
if(b.len > 0) {
// if not "/", then strip trailing path separator
if(b.len >= 2 && b.p[b.len - 1] == slash[0])
b.len--;
goroot = btake(&b);
}
xgetenv(&b, "GOBIN");
if(b.len == 0)
bprintf(&b, "%s%sbin", goroot, slash);
gobin = btake(&b);
xgetenv(&b, "GOOS");
if(b.len == 0)
bwritestr(&b, gohostos);
goos = btake(&b);
if(find(goos, okgoos, nelem(okgoos)) < 0)
fatal("unknown $GOOS %s", goos);
xgetenv(&b, "GOARM");
if(b.len == 0)
bwritestr(&b, xgetgoarm());
goarm = btake(&b);
xgetenv(&b, "GO386");
if(b.len == 0) {
if(cansse2())
bwritestr(&b, "sse2");
else
bwritestr(&b, "387");
}
go386 = btake(&b);
p = bpathf(&b, "%s/include/u.h", goroot);
if(!isfile(p)) {
fatal("$GOROOT is not set correctly or not exported\n"
"\tGOROOT=%s\n"
"\t%s does not exist", goroot, p);
}
xgetenv(&b, "GOHOSTARCH");
if(b.len > 0)
gohostarch = btake(&b);
i = find(gohostarch, okgoarch, nelem(okgoarch));
if(i < 0)
fatal("unknown $GOHOSTARCH %s", gohostarch);
bprintf(&b, "%c", gochars[i]);
gohostchar = btake(&b);
xgetenv(&b, "GOARCH");
if(b.len == 0)
bwritestr(&b, gohostarch);
goarch = btake(&b);
i = find(goarch, okgoarch, nelem(okgoarch));
if(i < 0)
fatal("unknown $GOARCH %s", goarch);
bprintf(&b, "%c", gochars[i]);
gochar = btake(&b);
xgetenv(&b, "GO_EXTLINK_ENABLED");
if(b.len > 0) {
goextlinkenabled = btake(&b);
if(!streq(goextlinkenabled, "0") && !streq(goextlinkenabled, "1"))
fatal("unknown $GO_EXTLINK_ENABLED %s", goextlinkenabled);
}
xsetenv("GOROOT", goroot);
xsetenv("GOARCH", goarch);
xsetenv("GOOS", goos);
xsetenv("GOARM", goarm);
xsetenv("GO386", go386);
// Make the environment more predictable.
xsetenv("LANG", "C");
xsetenv("LANGUAGE", "en_US.UTF8");
goversion = findgoversion();
workdir = xworkdir();
xatexit(rmworkdir);
bpathf(&b, "%s/pkg/tool/%s_%s", goroot, gohostos, gohostarch);
tooldir = btake(&b);
bfree(&b);
}