diff -uNr wget2-1.99.2/config.h.in wget2-1.99.2.mod/config.h.in
--- wget2-1.99.2/config.h.in	2019-08-30 15:57:39.000000000 +0300
+++ wget2-1.99.2.mod/config.h.in	2021-02-08 20:05:26.593142766 +0200
@@ -1662,7 +1662,7 @@
    - On Android, /bin/sh does not exist. It's /system/bin/sh instead.  */
 # define BOURNE_SHELL "sh"
 #else
-# define BOURNE_SHELL "/bin/sh"
+# define BOURNE_SHELL "@TERMUX_PREFIX@/bin/sh"
 #endif
 
 /* Define to l, ll, u, ul, ull, etc., as suitable for constants of type
diff -uNr wget2-1.99.2/lib/tempname.c wget2-1.99.2.mod/lib/tempname.c
--- wget2-1.99.2/lib/tempname.c	2019-05-14 12:11:02.000000000 +0300
+++ wget2-1.99.2.mod/lib/tempname.c	2021-02-08 20:03:45.356173902 +0200
@@ -147,8 +147,8 @@
     {
       if (direxists (P_tmpdir))
         dir = P_tmpdir;
-      else if (strcmp (P_tmpdir, "/tmp") != 0 && direxists ("/tmp"))
-        dir = "/tmp";
+      else if (direxists ("@TERMUX_PREFIX@/tmp"))
+        dir = "@TERMUX_PREFIX@/tmp";
       else
         {
           __set_errno (ENOENT);
diff -uNr wget2-1.99.2/libwget/io.c wget2-1.99.2.mod/libwget/io.c
--- wget2-1.99.2/libwget/io.c	2019-08-23 10:59:09.000000000 +0300
+++ wget2-1.99.2.mod/libwget/io.c	2021-02-08 20:02:37.567520848 +0200
@@ -428,7 +428,7 @@
 	// find out system temp directory
 	if (!(tmpdir = getenv("TMPDIR")) && !(tmpdir = getenv("TMP"))
 		&& !(tmpdir = getenv("TEMP")) && !(tmpdir = getenv("TEMPDIR")))
-		tmpdir = "/tmp";
+		tmpdir = "@TERMUX_PREFIX@/tmp";
 
 	basename = base_name(fname);
 
diff -uNr wget2-1.99.2/libwget/ssl_gnutls.c wget2-1.99.2.mod/libwget/ssl_gnutls.c
--- wget2-1.99.2/libwget/ssl_gnutls.c	2019-08-23 10:59:09.000000000 +0300
+++ wget2-1.99.2.mod/libwget/ssl_gnutls.c	2021-02-08 20:04:36.772666861 +0200
@@ -1273,7 +1273,7 @@
 				ncerts = gnutls_certificate_set_x509_system_trust(_credentials);
 #else
 			if (!strcmp(_config.ca_directory, "system"))
-				_config.ca_directory = "/etc/ssl/certs";
+				_config.ca_directory = "@TERMUX_PREFIX@/etc/tls/certs";
 #endif
 
 			if (ncerts < 0) {
diff -uNr wget2-1.99.2/libwget/ssl_openssl.c wget2-1.99.2.mod/libwget/ssl_openssl.c
--- wget2-1.99.2/libwget/ssl_openssl.c	2019-08-30 12:07:38.000000000 +0300
+++ wget2-1.99.2.mod/libwget/ssl_openssl.c	2021-02-08 20:04:56.100851688 +0200
@@ -424,7 +424,7 @@
 			goto end;
 		}
 
-		dir = "/etc/ssl/certs";
+		dir = "@TERMUX_PREFIX@/etc/tls/certs";
 		info_printf(_("OpenSSL: Could not load certificates from default paths. Falling back to '%s'."), dir);
 	}