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- Changed -flto check to support clang compiler.

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git-svn-id: file:///svn/unbound/trunk@2438 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2011-06-23 09:00:05 +00:00
parent ff23baadcc
commit 4f68378640
4 changed files with 305 additions and 322 deletions
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14
acx_nlnetlabs.m4
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@ -2,7 +2,8 @@
# Copyright 2009, Wouter Wijngaards, NLnet Labs. # Copyright 2009, Wouter Wijngaards, NLnet Labs.
# BSD licensed. # BSD licensed.
# #
# Version 11 # Version 12
# 2011-06-23 Add ACX_CHECK_FLTO to check -flto.
# 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66. # 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66.
# 2010-07-02 Add check for ss_family (for minix). # 2010-07-02 Add check for ss_family (for minix).
# 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS. # 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS.
@ -32,6 +33,7 @@
# ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX. # ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX.
# ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax. # ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax.
# ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax. # ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax.
# ACX_CHECK_FLTO - see if cc supports -flto and use it if so.
# ACX_LIBTOOL_C_ONLY - create libtool for C only, improved. # ACX_LIBTOOL_C_ONLY - create libtool for C only, improved.
# ACX_TYPE_U_CHAR - u_char type. # ACX_TYPE_U_CHAR - u_char type.
# ACX_TYPE_RLIM_T - rlim_t type. # ACX_TYPE_RLIM_T - rlim_t type.
@ -383,6 +385,16 @@ int test() {
])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND ])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND
dnl Check if CC supports -flto.
dnl in a way that supports clang and suncc (that flag does something else,
dnl but fails to link). It sets it in CFLAGS if it works.
AC_DEFUN([ACX_CHECK_FLTO],
[AC_MSG_CHECKING([if $CC supports -flto])
BAKCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -flto"
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [AC_MSG_RESULT(yes)], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
])
dnl Check the printf-format attribute (if any) dnl Check the printf-format attribute (if any)
dnl result in HAVE_ATTR_FORMAT. dnl result in HAVE_ATTR_FORMAT.
dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE. dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE.

608
configure vendored
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2
configure.ac
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@ -225,7 +225,7 @@ case "$debug_enabled" in
# nothing to do. # nothing to do.
;; ;;
esac esac
ACX_CHECK_COMPILER_FLAG(flto, [CFLAGS="$CFLAGS -flto"]) ACX_CHECK_FLTO
AC_C_INLINE AC_C_INLINE
ACX_CHECK_FORMAT_ATTRIBUTE ACX_CHECK_FORMAT_ATTRIBUTE

3
doc/Changelog
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@ -1,3 +1,6 @@
23 June 2011: Wouter
- Changed -flto check to support clang compiler.
17 June 2011: Wouter 17 June 2011: Wouter
- tag 1.4.11rc1 created. - tag 1.4.11rc1 created.
- remove warning about signed/unsigned from flex (other flex version). - remove warning about signed/unsigned from flex (other flex version).