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-rw-r--r--configure.in2
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index 7fbbc924..0a1e1d14 100644
--- a/configure.in
+++ b/configure.in
@@ -568,6 +568,8 @@ AC_CHECK_HEADERS(execinfo.h, [AC_CHECK_FUNCS(backtrace)])
AC_CHECK_HEADERS(errno.h)
+AC_CHECK_HEADERS(unistd.h)
+
# checking for a posix version of getpwnam_r
# if we are cross compiling and can not run the test
# assume getpwnam_r is the posix version