--- a/lib/gauche/configure.scm
+++ b/lib/gauche/configure.scm
@@ -305,16 +305,16 @@
   (cf-define 'PACKAGE_BUGREPORT (S (~ p'bug-report)))
   (cf-define 'PACKAGE_URL (S (~ p'url)))
 
-  (cf-subst 'SHELL (or (sys-getenv "CONFIG_SHELL") "/bin/sh"))
+  (cf-subst 'SHELL (or (sys-getenv "CONFIG_SHELL") "@TERMUX_PREFIX@/bin/sh"))
   (cf-subst 'LIBOBJS "")
   (cf-subst 'MFLAGS "")
   (cf-subst 'MAKEFLAGS "")
 
-  (cf-subst 'default_prefix "/usr/local")
+  (cf-subst 'default_prefix "@TERMUX_PREFIX@")
   (cf-subst 'prefix "NONE")       ;will be replaced by cf-output
   (cf-subst 'exec_prefix "NONE")  ;will be replaced by cf-output
   (cf-subst 'bindir "${exec_prefix}/bin")
-  (cf-subst 'sbindir "${exec_prefix}/sbin")
+  (cf-subst 'sbindir "${exec_prefix}/bin")
   (cf-subst 'libexecdir "${exec_prefix}/libexec")
   (cf-subst 'datarootdir "${prefix}/share")
   (cf-subst 'datadir "${datarootdir}")
@@ -322,7 +322,7 @@
   (cf-subst 'sharedstatedir "${prefix}/com")
   (cf-subst 'localstatedir "${prefix}/var")
   (cf-subst 'includedir "${prefix}/include")
-  (cf-subst 'oldincludedir "/usr/include")
+  (cf-subst 'oldincludedir "@TERMUX_PREFIX@/include")
   (cf-subst 'docdir "${datarootdir}/doc/${PACKAGE_TARNAME}")
   (cf-subst 'infodir "${datarootdir}/info")
   (cf-subst 'htmldir "${docdir}")