--- a/etc.c
+++ b/etc.c
@@ -1431,7 +1431,7 @@ void
 myExec(char *command)
 {
     mySignal(SIGINT, SIG_DFL);
-    execl("/bin/sh", "sh", "-c", command, NULL);
+    execl("@TERMUX_PREFIX@/bin/sh", "sh", "-c", command, NULL);
     exit(127);
 }
 
--- a/rc.c
+++ b/rc.c
@@ -1368,7 +1368,7 @@ init_rc(void)
     if (((tmp_dir = getenv("TMPDIR")) == NULL || *tmp_dir == '\0') &&
 	((tmp_dir = getenv("TMP")) == NULL || *tmp_dir == '\0') &&
 	((tmp_dir = getenv("TEMP")) == NULL || *tmp_dir == '\0'))
-	tmp_dir = "/tmp";
+	tmp_dir = "@TERMUX_PREFIX@/tmp";
 #ifdef HAVE_MKDTEMP
     tmp_dir = mkdtemp(Strnew_m_charp(tmp_dir, "/w3m-XXXXXX", NULL)->ptr);
     if (tmp_dir == NULL)
--- a/scripts/w3mman/w3mman.in
+++ b/scripts/w3mman/w3mman.in
@@ -1,7 +1,7 @@
 #!@PERL@
 
 @W3M = split(' ', $ENV{'W3MMAN_W3M'} || '@W3M@');
-$ENV{'W3MMAN_MAN'} ||= '@MAN@';
+$ENV{'W3MMAN_MAN'} ||= '@TERMUX_PREFIX@/bin/man';
 $SCRIPT = 'file:///$LIB/w3mman2html.cgi';
 
 sub usage {
--- a/scripts/w3mman/w3mman2html.cgi.in
+++ b/scripts/w3mman/w3mman2html.cgi.in
@@ -255,12 +255,9 @@ sub include_ref {
   local($d);
 
   for $d (
-	"/usr/include",
-	"/usr/local/include",
-	"/usr/X11R6/include",
-	"/usr/X11/include",
-	"/usr/X/include",
-	"/usr/include/X11"
+	"@TERMUX_PREFIX@/include",
+	"@TERMUX_PREFIX@/local/include",
+	"@TERMUX_PREFIX@/include/X11"
   ) {
     -f "$d/$_" && return "<a href=\"$CGI2$d/$_\">$_</a>";
   }