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-rw-r--r--configure.ac3
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index ba242c51..9f2878b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -274,7 +274,8 @@ esac
AC_CHECK_FUNCS(atexit btowc fmod getgrent getgroups grantpt \
isascii iswctype iswlower iswupper mbrlen \
memcmp memcpy memcpy_ulong memmove memset \
- memset_ulong mkstemp posix_openpt setenv setlocale setsid snprintf strchr \
+ memset_ulong mkstemp posix_openpt setenv setlocale setsid sigprocmask \
+ snprintf strchr \
strerror strftime strncasecmp strcoll strtod strtoul \
system tmpfile towlower towupper tzset usleep waitpid wcrtomb \
wcscoll wctype)