probe for getspnam(), forkpty(), utmpx, replace sethostname()

Android is missing all of these; we need to probe for some so we have
a config symbol to depend on.
sethostname() is easily replaced.
We got termios.h via pty.h; now it's not included in configure-step tools,
so we need termios.h to generate globals.

1 files changed, 28 insertions, 0 deletions

diff --git a/scripts/genconfig.sh b/scripts/genconfig.sh
index b50c32bb..e040aea5 100755
--- a/scripts/genconfig.sh
+++ b/scripts/genconfig.sh
@@ -44,6 +44,34 @@ EOF
 
     int main(int argc, char *argv[]) { return posix_fallocate(0,0,0); }
 EOF
+  
+  # Android and some other platforms miss utmpx
+  probesymbol TOYBOX_UTMPX -c << EOF
+    #include <utmpx.h>
+    #ifndef BOOT_TIME
+    #error nope
+    #endif
+    int main(int argc, char *argv[]) {
+      struct utmpx *a; 
+      if (0 != (a = getutxent())) return 0;
+      return 1;
+    }
+EOF
+
+  # Android is missing shadow.h and pty.h
+  probesymbol TOYBOX_PTY -c << EOF
+    #include <pty.h>
+    int main(int argc, char *argv[]) {
+      int master; return forkpty(&master, NULL, NULL, NULL);
+    }
+EOF
+
+  probesymbol TOYBOX_SHADOW -c << EOF
+    #include <shadow.h>
+    int main(int argc, char *argv[]) {
+      struct spwd *a = getspnam("root"); return 0;
+    }
+EOF
 }
 
 genconfig()