libctf: deduplicate and sort the string table

[deliverable/binutils-gdb.git] / libctf / configure.ac

diff --git a/libctf/configure.ac b/libctf/configure.ac
index beb90ba75cc4cf58329da2f5551d81201affe2db..2a1a80b7ecbb667f56dbc40293e73c788dc25d58 100644 (file)
--- a/libctf/configure.ac
+++ b/libctf/configure.ac
@@ -133,6 +133,22 @@ esac
 
 AM_CONDITIONAL(NEED_CTF_QSORT_R, test "${ac_cv_libctf_qsort_r_signature}" = unknown)
 
+AC_CACHE_CHECK([for O_CLOEXEC], [ac_cv_libctf_macro_O_CLOEXEC],
+  [AC_LINK_IFELSE(
+    [AC_LANG_PROGRAM([[#include <fcntl.h>
+                       #ifndef O_CLOEXEC
+                         choke me;
+                       #endif
+                     ]],
+                     [[return O_CLOEXEC;]])],
+    [ac_cv_libctf_macro_O_CLOEXEC=yes],
+    [ac_cv_libctf_macro_O_CLOEXEC=no])])
+
+if test $ac_cv_libctf_macro_O_CLOEXEC = yes; then
+  AC_DEFINE([HAVE_O_CLOEXEC], 1,
+           [Whether the platform has a definition of O_CLOEXEC.])
+fi
+
 AC_CONFIG_FILES(Makefile)
 AC_CONFIG_HEADERS(config.h)
 AC_OUTPUT