Update.
* sysdeps/unix/sysv/linux/configure.in: Move binutils check to... * sysdeps/unix/sysv/linux/mips/configure.in: ...here. New file. 2001-05-11 Andreas Jaeger <aj@suse.de>
This commit is contained in:
Andreas Jaeger
parent
a26e67d3f1
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02eca23b08
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@ -1,3 +1,8 @@
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2001-05-11 Andreas Jaeger <aj@suse.de>
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* sysdeps/unix/sysv/linux/configure.in: Move binutils check to...
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* sysdeps/unix/sysv/linux/mips/configure.in: ...here. New file.
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2001-05-11 Andreas Jaeger <aj@suse.de>
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* sysdeps/unix/sysv/linux/configure.in: Check binutils version on
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48
FAQ
48
FAQ
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@ -560,11 +560,11 @@ newer.
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1.20. Which tools should I use for MIPS?
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{AJ} You should use the current development version of gcc 2.97 from CVS.
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gcc 2.95.x does not work correctly on mips-linux.
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{AJ} You should use the current development version of gcc 3.0 or newer from
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CVS. gcc 2.95.x does not work correctly on mips-linux.
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You need also recent binutils, anything before and including 2.10 will not
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work correctly. Either try the Linux binutils 2.10.0.33 from HJ Lu or the
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You need also recent binutils, anything before and including 2.11 will not
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work correctly. Either try the Linux binutils 2.11.90.0.5 from HJ Lu or the
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current development version of binutils from CVS.
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Please note that `make check' might fail for a number of the math tests
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@ -1862,29 +1862,29 @@ this should be necessary.
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supports synchronous context switches only. There are several reasons for
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this:
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o UNIX provides no other (portable) way of effecting a synchronous
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context switch (also known as co-routine switch). Some versions
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support this via setjmp()/longjmp() but this does not work
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universally.
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- UNIX provides no other (portable) way of effecting a synchronous
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context switch (also known as co-routine switch). Some versions
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support this via setjmp()/longjmp() but this does not work
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universally.
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o As defined by the UNIX '98 standard, the only way setcontext()
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could trigger an asychronous context switch is if this function
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were invoked on the ucontext_t pointer passed as the third argument
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to a signal handler. But according to draft 5, XPG6, XBD 2.4.3,
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setcontext() is not among the set of routines that may be called
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from a signal handler.
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- As defined by the UNIX '98 standard, the only way setcontext()
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could trigger an asychronous context switch is if this function
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were invoked on the ucontext_t pointer passed as the third argument
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to a signal handler. But according to draft 5, XPG6, XBD 2.4.3,
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setcontext() is not among the set of routines that may be called
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from a signal handler.
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o If setcontext() were to be used for asynchronous context switches,
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all kinds of synchronization and re-entrancy issues could arise and
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these problems have already been solved by real multi-threading
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libraries (e.g., POSIX threads or Linux threads).
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- If setcontext() were to be used for asynchronous context switches,
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all kinds of synchronization and re-entrancy issues could arise and
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these problems have already been solved by real multi-threading
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libraries (e.g., POSIX threads or Linux threads).
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o Synchronous context switching can be implemented entirely in
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user-level and less state needs to be saved/restored than for an
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asynchronous context switch. It is therefore useful to distinguish
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between the two types of context switches. Indeed, some
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application vendors are known to use setcontext() to implement
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co-routines on top of normal (heavier-weight) pre-emptable threads.
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- Synchronous context switching can be implemented entirely in
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user-level and less state needs to be saved/restored than for an
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asynchronous context switch. It is therefore useful to distinguish
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between the two types of context switches. Indeed, some
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application vendors are known to use setcontext() to implement
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co-routines on top of normal (heavier-weight) pre-emptable threads.
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It should be noted that if someone was dead-bent on using setcontext()
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on the third arg of a signal handler, then IA-64 Linux could support
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@ -224,65 +224,3 @@ ${ac_prefix}/include directory out of the way." 1>&2; exit 1; }
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echo "$ac_t""ok" 1>&6
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fi
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fi
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case "$machine" in
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mips*)
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for ac_prog in $AS
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do
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# Extract the first word of "$ac_prog", so it can be a program name with args.
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set dummy $ac_prog; ac_word=$2
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echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
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echo "configure:236: checking for $ac_word" >&5
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if eval "test \"`echo '$''{'ac_cv_prog_AS'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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if test -n "$AS"; then
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ac_cv_prog_AS="$AS" # Let the user override the test.
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else
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
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ac_dummy="$PATH"
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for ac_dir in $ac_dummy; do
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test -z "$ac_dir" && ac_dir=.
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if test -f $ac_dir/$ac_word; then
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ac_cv_prog_AS="$ac_prog"
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break
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fi
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done
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IFS="$ac_save_ifs"
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fi
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fi
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AS="$ac_cv_prog_AS"
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if test -n "$AS"; then
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echo "$ac_t""$AS" 1>&6
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else
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echo "$ac_t""no" 1>&6
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fi
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test -n "$AS" && break
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done
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if test -z "$AS"; then
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ac_verc_fail=yes
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else
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# Found it, now check the version.
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echo $ac_n "checking version of $AS""... $ac_c" 1>&6
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echo "configure:270: checking version of $AS" >&5
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ac_prog_version=`$AS --version 2>&1 | sed -n 's/^.*GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\).*$/\1/p'`
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case $ac_prog_version in
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'') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
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2.11.90.0.[5-9]* | 2.11.90.[1-9]* | 2.11.9[1-9]* | 2.11.[1-9]* | 2.1[2-9]*| 2.[2-9]*)
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ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
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*) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
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esac
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echo "$ac_t""$ac_prog_version" 1>&6
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fi
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if test $ac_verc_fail = yes; then
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echo "configure: warning: *** Your binutils versions are too old.
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*** We strongly advise to update binutils. For details check
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*** the FAQ and INSTALL documents." 1>&2
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fi
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;;
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esac
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s%@AS@%$AS%g
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@ -191,14 +191,3 @@ ${ac_prefix}/include directory out of the way.])
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AC_MSG_RESULT(ok)
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fi
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fi
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case "$machine" in
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mips*)
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AC_CHECK_PROG_VER(AS, $AS, --version,
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[GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)],
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[2.11.90.0.[5-9]* | 2.11.90.[1-9]* | 2.11.9[1-9]* | 2.11.[1-9]* | 2.1[2-9]*| 2.[2-9]*],
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AC_MSG_WARN([*** Your binutils versions are too old.
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*** We strongly advise to update binutils. For details check
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*** the FAQ and INSTALL documents.]))
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;;
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esac
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@ -0,0 +1,59 @@
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# Local configure fragment for sysdeps/unix/sysv/linux/mips.
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for ac_prog in $AS
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do
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# Extract the first word of "$ac_prog", so it can be a program name with args.
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set dummy $ac_prog; ac_word=$2
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echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
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echo "configure:9: checking for $ac_word" >&5
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if eval "test \"`echo '$''{'ac_cv_prog_AS'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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if test -n "$AS"; then
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ac_cv_prog_AS="$AS" # Let the user override the test.
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else
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
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ac_dummy="$PATH"
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for ac_dir in $ac_dummy; do
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test -z "$ac_dir" && ac_dir=.
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if test -f $ac_dir/$ac_word; then
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ac_cv_prog_AS="$ac_prog"
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break
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fi
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done
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IFS="$ac_save_ifs"
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fi
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fi
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AS="$ac_cv_prog_AS"
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if test -n "$AS"; then
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echo "$ac_t""$AS" 1>&6
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else
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echo "$ac_t""no" 1>&6
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fi
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test -n "$AS" && break
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done
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if test -z "$AS"; then
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ac_verc_fail=yes
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else
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# Found it, now check the version.
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echo $ac_n "checking version of $AS""... $ac_c" 1>&6
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echo "configure:43: checking version of $AS" >&5
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ac_prog_version=`$AS --version 2>&1 | sed -n 's/^.*GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\).*$/\1/p'`
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case $ac_prog_version in
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'') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
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2.11.90.0.[5-9]* | 2.11.90.[1-9]* | 2.11.9[1-9]* | 2.11.[1-9]* | 2.1[2-9]*| 2.[2-9]*)
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ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
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*) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
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esac
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echo "$ac_t""$ac_prog_version" 1>&6
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fi
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if test $ac_verc_fail = yes; then
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echo "configure: warning: *** Your binutils versions are too old.
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*** We strongly advise to update binutils. For details check
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*** the FAQ and INSTALL documents." 1>&2
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fi
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s%@AS@%$AS%g
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@ -0,0 +1,10 @@
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sinclude(./aclocal.m4)dnl Autoconf lossage
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/unix/sysv/linux/mips.
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AC_CHECK_PROG_VER(AS, $AS, --version,
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[GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)],
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[2.11.90.0.[5-9]* | 2.11.90.[1-9]* | 2.11.9[1-9]* | 2.11.[1-9]* | 2.1[2-9]*| 2.[2-9]*],
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AC_MSG_WARN([*** Your binutils versions are too old.
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*** We strongly advise to update binutils. For details check
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*** the FAQ and INSTALL documents.]))
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