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-rw-r--r--Build/source/libs/libpng/configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/Build/source/libs/libpng/configure.ac b/Build/source/libs/libpng/configure.ac
index 828eac073ec..f4b42b85030 100644
--- a/Build/source/libs/libpng/configure.ac
+++ b/Build/source/libs/libpng/configure.ac
@@ -32,6 +32,7 @@ AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h])
AC_C_CONST
AC_TYPE_SIZE_T
AC_STRUCT_TM
+AC_C_RESTRICT
# Checks for library functions.
AC_FUNC_STRTOD