Setup musl toolchain

1 files changed, 34 insertions, 8 deletions

diff --git a/src/prc/prc.c b/src/prc/prc.c
index fa2e751..83c4baf 100644
--- a/src/prc/prc.c
+++ b/src/prc/prc.c
@@ -44,7 +44,7 @@ struct ldflags
 
 struct state
 {
-    const char *as, *qbe, *ld, *prefix, *libexecdir, *name, *out;
+    const char *as, *qbe, *ld, *prefix, *libexecdir, *musl, *name, *out;
     const struct arg *arg;
     struct input sources, incs, libs, ldirs;
     struct procs srcprocs, qbeprocs, asprocs;
@@ -521,19 +521,26 @@ static int isobj(const char *path)
 static int ld(struct state *s)
 {
     int ret = -1;
+    struct dstr crt1 = {0}, crti = {0}, crtn = {0}, ldir = {0};
     const struct input *srcs = &s->sources;
     const struct procs *asp = &s->asprocs;
     const struct ldflags *lf = &s->ldflags;
     /*
-     * argv[0]
-     * -o
-     * <out>
-     * ...
+     * mandatory arguments:
+     * 1: argv[0]
+     * 2: -static
+     * 3: -o
+     * 4: <out>
+     * <objects>
      * <ldflags>
-     * -lc
-     * argv[n]
+     * 5: <musl>/lib/crt1.o
+     * 6: <musl>/lib/crti.o
+     * 7: <musl>/lib/crtn.o
+     * 8: -L<musl>/lib
+     * 9: -lc
+     * 10: argv[n]
      */
-    size_t n = asp->n + lf->n + 5, i = 0;
+    size_t n = asp->n + lf->n + 10, i = 0;
     struct spawn *sp = NULL;
     char **argv = NULL;
 
@@ -548,6 +555,7 @@ static int ld(struct state *s)
     }
 
     argv[i++] = (char *)s->ld;
+    argv[i++] = "-static";
     argv[i++] = "-o";
     argv[i++] = (char *)s->out;
 
@@ -565,6 +573,16 @@ static int ld(struct state *s)
     for (size_t j = 0; j < lf->n; j++)
         argv[i++] = (char *)lf->v[j];
 
+    if (append(&crt1, "%s/lib/crt1.o", s->musl)
+        || append(&crti, "%s/lib/crti.o", s->musl)
+        || append(&crtn, "%s/lib/crtn.o", s->musl)
+        || append(&ldir, "-L%s/lib", s->musl))
+        goto end;
+
+    argv[i++] = crt1.s;
+    argv[i++] = crti.s;
+    argv[i++] = crtn.s;
+    argv[i++] = ldir.s;
     argv[i++] = "-lc";
     argv[i++] = NULL;
 
@@ -578,6 +596,10 @@ static int ld(struct state *s)
 end:
     free(argv);
     spawn_free(sp);
+    free_dstr(&crt1);
+    free_dstr(&crti);
+    free_dstr(&crtn);
+    free_dstr(&ldir);
     return ret;
 }
 
@@ -645,6 +667,9 @@ static void setdefaults(struct state *s)
     if (!s->libexecdir)
         s->libexecdir = LIBEXECDIR;
 
+    if (!s->musl)
+        s->musl = s->prefix;
+
     s->out = "a.out";
 }
 
@@ -658,6 +683,7 @@ int main(int argc, char *argv[])
         .ld = getenv("LD"),
         .as = getenv("AS"),
         .qbe = getenv("PRCQBE"),
+        .musl = getenv("PRCMUSL"),
         .prefix = getenv("PRCPREFIX"),
         .libexecdir = getenv("PRCLIBEXECDIR")
     };