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-rw-r--r--configure.in4
1 files changed, 2 insertions, 2 deletions
diff --git a/configure.in b/configure.in
index 5f7ae53153..e132076d65 100644
--- a/configure.in
+++ b/configure.in
@@ -2812,8 +2812,8 @@ AC_ARG_WITH(dln-a-out,
AC_CACHE_CHECK(whether ELF binaries are produced, rb_cv_binary_elf,
[AC_TRY_LINK([],[], [
-AS_CASE(["`head -1 conftest$EXEEXT | cat -e`"],
-['^?ELF'*], [rb_cv_binary_elf=yes], [rb_cv_binary_elf=no])],
+AS_CASE(["`head -1 conftest$EXEEXT | tr -dc '\177ELF' | tr '\177' .`"],
+[.ELF*], [rb_cv_binary_elf=yes], [rb_cv_binary_elf=no])],
rb_cv_binary_elf=no)])
if test "$rb_cv_binary_elf" = yes; then