curl-override.m4: provide AC_CONFIG_MACRO_DIR definition conditionally

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 17:26:32 +01:00
parent d86503ea82
commit bc5298e25c

View File

@ -2,7 +2,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
# serial 5
# serial 6
dnl CURL_OVERRIDE_AUTOCONF
dnl -------------------------------------------------
@ -89,12 +89,12 @@ m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR],
[CURL_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],[:])])