lxdream.org :: lxdream/acinclude.m4 r1199:62d0a21fac1c

filename	acinclude.m4
changeset	1199:62d0a21fac1c
prev	1198:407659e01ef0
next	1200:3b2097efa97d
author	nkeynes
date	Wed Dec 21 12:15:06 2011 +1000 (8 years ago)
permissions	-rw-r--r--
last change	Add checks for -msse3 and -mfpmath=sse before adding them (in case the compiler doesn't actually support them) Tweak configure for forward compatibility with more recent autoconfs Update config.guess + config.sub to more recent versions

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     1.1 --- a/acinclude.m4	Fri Dec 16 10:08:45 2011 +1000
     1.2 +++ b/acinclude.m4	Wed Dec 21 12:15:06 2011 +1000
     1.3 @@ -15,6 +15,8 @@
     1.4     AC_MSG_RESULT([yes])
     1.5     $1 ], [ 
     1.6     AC_MSG_RESULT([no])
     1.7 +   $2 ], [
     1.8 +      AC_MSG_RESULT([no])
     1.9     $2 ])
    1.10  ])
    1.11  
    1.12 @@ -69,7 +71,9 @@
    1.13     AC_MSG_RESULT([yes])
    1.14     $1 ], [ 
    1.15     AC_MSG_RESULT([no])
    1.16 -   $2 ])
    1.17 +   $2 ], [
    1.18 +   AC_MSG_RESULT([no])
    1.19 +   $2 ] )
    1.20  ])
    1.21  
    1.22  # AC_CC_VERSION([if-gcc], [if-icc],[if-other])
    1.23 @@ -111,6 +115,40 @@
    1.24  fi
    1.25  ]);
    1.26  
    1.27 +# Check if the given C compiler flag is supported, and if so add it to CFLAGS
    1.28 +AC_DEFUN([AC_CHECK_CFLAG], [
    1.29 +AC_LANG_PUSH([C])
    1.30 +AC_MSG_CHECKING([if $CC supports $1])
    1.31 +save_CFLAGS="$CFLAGS"
    1.32 +CFLAGS="$1 $CFLAGS"
    1.33 +AC_COMPILE_IFELSE([
    1.34 +  AC_LANG_SOURCE([int main() { return 0; }])], [
    1.35 +   AC_MSG_RESULT([yes])
    1.36 +   $2 ], [ 
    1.37 +   CFLAGS="$save_CFLAGS"
    1.38 +   AC_MSG_RESULT([no])
    1.39 +   $3 ])
    1.40 +AC_LANG_POP([C])
    1.41 +])
    1.42 +
    1.43 +# Check if the given OBJC compiler flag is supported, and if so add it to OBJCFLAGS
    1.44 +AC_DEFUN([AC_CHECK_OBJCFLAG], [
    1.45 +AC_LANG_PUSH([Objective C])
    1.46 +AC_MSG_CHECKING([if $OBJC supports $1])
    1.47 +save_OBJCFLAGS="$OBJCFLAGS"
    1.48 +OBJCFLAGS="$1 $OBJCFLAGS"
    1.49 +AC_COMPILE_IFELSE([
    1.50 +  AC_LANG_SOURCE([int main() { return 0; }])], [
    1.51 +   AC_MSG_RESULT([yes])
    1.52 +   $2 ], [ 
    1.53 +   OBJCFLAGS="$save_OBJCFLAGS"
    1.54 +   AC_MSG_RESULT([no])
    1.55 +   $3 ])
    1.56 +AC_LANG_POP([Objective C])
    1.57 +])
    1.58 +
    1.59 +
    1.60 +
    1.61  # AC_HAVE_OBJC([if-present],[if-not-present])
    1.62  # Check if we have a working Objective-C compiler
    1.63  AC_DEFUN([AC_HAVE_OBJC], [