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authorRalf Wildenhues <Ralf.Wildenhues@gmx.de>2009-07-30 19:43:16 +0000
committerRalf Wildenhues <Ralf.Wildenhues@gmx.de>2009-07-30 19:43:16 +0000
commit5bb4d8dedf5ac57875bdcf0928a2bd9e128ee069 (patch)
tree32c11f210f4d688b0b600ee29967d4831e9b94af /config/override.m4
parentfe79276ff1d1ebeed601f3b579f2c80193552b42 (diff)
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config/
* extensions.m4 (AC_USE_SYSTEM_EXTENSIONS): Do not expand for Autoconf 2.62 or newer. * tls.m4 (GCC_CHECK_TLS): Fix m4 quotation. * no-executables.m4 (_AC_COMPILER_EXEEXT): Fix m4 quotation. * override.m4 (m4_copy_force, m4_rename_force): Provide macros if not defined. (AC_PREREQ): Use m4_copy_force. readline/examples/rlfe/ * configure.in: Correctly quote AC_PROGRAM_SOURCE definition.
Diffstat (limited to 'config/override.m4')
-rw-r--r--config/override.m412
1 files changed, 11 insertions, 1 deletions
diff --git a/config/override.m4 b/config/override.m4
index 9bb1496..bf112db 100644
--- a/config/override.m4
+++ b/config/override.m4
@@ -12,6 +12,16 @@ dnl
dnl The _GCC_AUTOCONF_VERSION_TEST ensures that exactly the desired
dnl Autoconf version is used. It should be kept for consistency.
+dnl Provide m4_copy_force and m4_rename_force for old Autoconf versions.
+
+m4_ifndef([m4_copy_force],
+[m4_define([m4_copy_force],
+[m4_ifdef([$2], [m4_undefine([$2])])m4_copy($@)])])
+
+m4_ifndef([m4_rename_force],
+[m4_define([m4_rename_force],
+[m4_ifdef([$2], [m4_undefine([$2])])m4_rename($@)])])
+
dnl m4_PACKAGE_VERSION is an undocumented Autoconf macro.
dnl We use it because this fix is intended for 2.59 only.
dnl A feature test for the broken AC_CONFIG_SUBDIRS instead
@@ -25,7 +35,7 @@ ifdef([m4_PACKAGE_VERSION],
[dnl AC_DEFUN a commonly used macro so this file is picked up.
m4_copy([AC_PREREQ], [_AC_PREREQ])
AC_DEFUN([AC_PREREQ], [frob])
-m4_copy([_AC_PREREQ], [AC_PREREQ])
+m4_copy_force([_AC_PREREQ], [AC_PREREQ])
dnl Ensure exactly this Autoconf version is used