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cares-override.m4: provide AC_CONFIG_MACRO_DIR definition conditionally

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Provide a 'traceable' AC_CONFIG_MACRO_DIR definition only when using
an autoconf version that does not provide it, instead of what we were
doing up to now of providing and overriding AC_CONFIG_MACRO_DIR for
all autoconf versions.
This commit is contained in:
Yang Tse
2013-01-01 18:21:34 +01:00
parent 5b5066d6bc
commit 70ac469a0c
1 changed files with 7 additions and 7 deletions
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14
m4/cares-override.m4
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@ -2,7 +2,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
# serial 5
# serial 6
dnl CARES_OVERRIDE_AUTOCONF
dnl -------------------------------------------------
@ -89,12 +89,12 @@ m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR],
[CARES_CHECK_PATH_SEPARATOR
m4_define([$0],[])])
dnl Override Autoconf's AC_CONFIG_MACRO_DIR (DIR)
dnl Provide Autoconf's AC_CONFIG_MACRO_DIR (DIR)
dnl -------------------------------------------------
dnl This is an emulation of Autoconf's 2.61 macro.
dnl This is done to use fixed macro across Autoconf
dnl versions, and avoid warnings from modern libtool
dnl which traces usage of this macro.
dnl Allow usage of mentioned macro in configure.ac
dnl even with ancient Autoconf versions, such as 2.57,
dnl that do not provide a definition for this macro.
AC_DEFUN([AC_CONFIG_MACRO_DIR],[:])
m4_ifndef([AC_CONFIG_MACRO_DIR],
[AC_DEFUN([AC_CONFIG_MACRO_DIR],[:])])