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Hi! This is an unsuccessful attempt to cure `-mcpu=' is deprecated. Use `-mtune=' or '-march=' instead. warnings during the build. GCC <= 3.3.x use -mcpu=, while 3.4.x+ uses -mtune=. Unfortunately, it seems AC_SUBST doesn't work in configure fragments or something. Roland, any ideas? Alternatively we could use something like: CFLAGS-initfini.s += -march=i386 -m$(shell if $(CC) $(CFLAGS) -mtune=i386 -xc /dev/null -S -o - > /dev/null 2>&1; then echo tune; else echo cpu; fi)=i386 2005-03-05 Jakub Jelinek <jakub@redhat.com> * config.make.in (have-cc-mtune): Add. * sysdeps/i386/configure.in (libc_cv_cc_mtune): Test for -mtune= switch. * sysdeps/i386/configure: Rebuilt. * sysdeps/i386/Makefile (CFLAGS-initfini.s): Use -mtune= instead of -mcpu= if compiler supports that. linuxthreads/ * sysdeps/i386/Makefile (CFLAGS-pt-initfini.s): Use -mtune= instead of -mcpu= if compiler supports that. --- libc/config.make.in.jj 2004-09-20 15:34:55.000000000 +0200 +++ libc/config.make.in 2005-03-05 13:29:19.908436601 +0100 @@ -62,6 +62,7 @@ have-selinux = @have_selinux@ have-cc-with-libunwind = @libc_cv_cc_with_libunwind@ fno-unit-at-a-time = @fno_unit_at_a_time@ bind-now = @bindnow@ +have-cc-mtune = @libc_cv_cc_mtune@ static-libgcc = @libc_cv_gcc_static_libgcc@ --- libc/sysdeps/i386/Makefile.jj 2005-01-26 18:22:24.000000000 +0100 +++ libc/sysdeps/i386/Makefile 2005-03-05 13:30:29.977959034 +0100 @@ -8,8 +8,12 @@ long-double-fcts = yes ifeq ($(subdir),csu) # On i686 we must avoid generating the trampoline functions generated # to get the GOT pointer. +ifeq ($(have-cc-mtune),yes) +CFLAGS-initfini.s += -march=i386 -mtune=i386 +else CFLAGS-initfini.s += -march=i386 -mcpu=i386 endif +endif ifeq ($(subdir),gmon) sysdep_routines += i386-mcount --- libc/sysdeps/i386/configure.in.jj 2005-01-05 10:39:52.000000000 +0100 +++ libc/sysdeps/i386/configure.in 2005-03-05 13:27:32.001651891 +0100 @@ -33,3 +33,11 @@ rm -f conftest*])AC_SUBST(libc_cv_cpp_as if test $libc_cv_cpp_asm_debuginfo = yes; then AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO) fi + +AC_CACHE_CHECK(if compiler supports -mtune option, + libc_cv_cc_mtune, [dnl + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -mtune=i386" + libc_cv_cc_mtune=no + AC_TRY_COMPILE(,,[libc_cv_cc_mtune=yes]) +])AC_SUBST(libc_cv_cc_mtune) --- libc/sysdeps/i386/configure.jj 2005-01-05 10:39:52.000000000 +0100 +++ libc/sysdeps/i386/configure 2005-03-05 13:27:36.198904475 +0100 @@ -52,3 +52,61 @@ if test $libc_cv_cpp_asm_debuginfo = yes _ACEOF fi + + +echo "$as_me:$LINENO: checking if compiler supports -mtune option" >&5 +echo $ECHO_N "checking if compiler supports -mtune option... $ECHO_C" >&6 +if test "${libc_cv_cc_mtune+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -mtune=i386" + libc_cv_cc_mtune=no + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + libc_cv_cc_mtune=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext + +fi +echo "$as_me:$LINENO: result: $libc_cv_cc_mtune" >&5 +echo "${ECHO_T}$libc_cv_cc_mtune" >&6 --- libc/linuxthreads/sysdeps/i386/Makefile.jj 2005-01-08 16:50:22.000000000 +0100 +++ libc/linuxthreads/sysdeps/i386/Makefile 2005-03-05 13:31:40.653373513 +0100 @@ -1,7 +1,11 @@ ifeq ($(subdir),linuxthreads) # On i686 we must avoid generating the trampoline functions generated # to get the GOT pointer. +ifeq ($(have-cc-mtune),yes) +CFLAGS-pt-initfini.s += -march=i386 -mtune=i386 +else CFLAGS-pt-initfini.s += -march=i386 -mcpu=i386 +endif # Most files must not be compiled without frame pointer since we need # the frame base address which is stored in %ebp unless the frame pointer Jakub
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