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Add optional description which complains on newer versions of autoconf

Summary: #22

Test Plan: none

Reviewed By: andrewjcg@fb.com

FB internal diff: D683791
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1 parent 9a90a89 commit a6f8a89d7ae9db45d96a124f9f9c0d1def5f0a04 @nathasm nathasm committed with jdelong Dec 17, 2012
Showing with 2 additions and 2 deletions.
  1. +2 −2 folly/configure.ac
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4 folly/configure.ac
@@ -52,8 +52,8 @@ AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_C_VOLATILE
AC_CHECK_TYPE([__int128],
- [AC_DEFINE([HAVE_INT128_T], [1])],
- [AC_DEFINE([HAVE_INT128_T], [0])])
+ [AC_DEFINE([HAVE_INT128_T], [1], [Define if __int128 exists])],
+ [AC_DEFINE([HAVE_INT128_T], [0], [Define if __int128 does not exist])])
AC_CHECK_TYPES([ptrdiff_t])
# Checks for library functions.

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