Fix strerror module on Solaris 7.

[gnulib.git] / m4 / strerror.m4

diff --git a/m4/strerror.m4 b/m4/strerror.m4
index 9cb5769..78b8891 100644 (file)
--- a/m4/strerror.m4
+++ b/m4/strerror.m4
@@ -17,6 +17,7 @@ AC_DEFUN([gl_FUNC_STRERROR],
 # Like gl_FUNC_STRERROR, except prepare for separate compilation (no AC_LIBOBJ).
 AC_DEFUN([gl_FUNC_STRERROR_SEPARATE],
 [
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
   AC_CACHE_CHECK([for working strerror function],
    [gl_cv_func_working_strerror],
    [AC_RUN_IFELSE(