--- gforth/configure.in 2003/08/17 22:52:33 1.128 +++ gforth/configure.in 2003/09/14 15:06:28 1.136 @@ -21,27 +21,30 @@ dnl Process this file with autoconf to p dnl We use some automake macros here, dnl but don't use automake for creating Makefile.in -AC_INIT([gforth],[0.6.1-20030806],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth]) +AC_INIT([gforth],[0.6.2-20030910],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth]) AC_PREREQ(2.54) #snapshots have numbers major.minor.release-YYYYMMDD #note that lexicographic ordering must be heeded. #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1! -UPDATED="August 6, 2003" +UPDATED="September 10, 2003" AC_SUBST(UPDATED) AC_CONFIG_HEADERS(engine/config.h) #suppress the "-g -O2" default test "$CFLAGS" || CFLAGS=-O2 -#default setting that may be changed later: -test "$no_dynamic_default" || no_dynamic_default=0 - AC_ARG_ENABLE(force-reg, [ --enable-force-reg Use explicit register declarations if they appear in the machine.h file. This can cause a good speedup, but also incorrect code with some gcc versions on some processors (default disabled).], AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)])) +AC_SUBST(PROFEXES) +AC_SUBST(PROFOBJS) +AC_ARG_ENABLE(prof, +[ --enable-prof Build gforth-prof, which outputs frequently occuring + sequences of primitives.], +PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o") AC_ARG_WITH(debug, [ --with-debug specifies option -g to compile with debug info @@ -70,6 +73,7 @@ AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeo AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)]) AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?]) AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default]) +AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code]) #set up feature test macros, so the tests get them right: # turn on all POSIX, SUSv3, and GNU features if available @@ -107,16 +111,6 @@ AC_MSG_RESULT($make_type) AC_SUBST(GNUMAKE) -dnl gcc-3.2 seems to work fine now -dnl AC_MSG_CHECKING(gcc version) -dnl gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'` -dnl AC_MSG_RESULT($gcc_version) -dnl if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null -dnl then -dnl no_dynamic_default=1 -dnl AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2)) -dnl fi - AC_MSG_CHECKING([whether the linker accepts -export-dynamic]) OLDLDFLAGS=$LDFLAGS LDFLAGS="$LDFLAGS -export-dynamic" @@ -130,11 +124,20 @@ AC_MSG_RESULT($ac_export_dynamic) #gforth will run; the system on which configure will run is the `build' AC_CANONICAL_HOST case "$host_cpu" in + arm*) + machine=arm + CFLAGS="$CFLAGS -fomit-frame-pointer" + if test -z $no_dynamic_default; then + no_dynamic_default=1 + AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation]) + fi + ;; hppa*) machine=hppa $srcdir/mkinstalldirs arch/hppa AC_LIBOBJ(../arch/hppa/cache) - #LDFLAGS="$LDFLAGS -Xlinker -N" + #-N needed for --dynamic + LDFLAGS="$LDFLAGS -Xlinker -N" LIBS="$LIBS -L/lib/pa1.1/" ;; sparc*) @@ -155,10 +158,16 @@ case "$host_cpu" in CFLAGS="$CFLAGS -march=pentium" AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486") ;; -#generic should work for IA64 -# ia64*) -# machine=ia64 -# ;; + x86_64) + machine=amd64 + ;; + ia64*) + machine=ia64 + AC_LIBOBJ(../arch/ia64/flush_icache_block) + test "$skipcode" || skipcode="nop.i 0" + #".skip 16" passes the test below, + # but gives an assembler error in engine + ;; m68k) machine=m68k CFLAGS="$CFLAGS -fomit-frame-pointer" @@ -182,8 +191,10 @@ case "$host_cpu" in #particular, the delay slots of LW, MFLO, etc.) # #Therefore we disable dynamic native code by default: - no_dynamic_default=1 - AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2)) + if test -z $no_dynamic_default; then + no_dynamic_default=1 + AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)]) + fi ;; alpha*) machine=alpha @@ -203,8 +214,10 @@ case "$host_cpu" in AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!]) machine=generic #I-cache flushing would be needed for dynamic code generation - no_dynamic_default=1 - AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2)) + if test -z $no_dynamic_default; then + no_dynamic_default=1 + AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation]) + fi esac AC_SUBST(host) @@ -323,6 +336,12 @@ AC_TRY_COMPILE(,,ac_nocrossjumping=yes;E CFLAGS="$CFLAGS_1" AC_MSG_RESULT($ac_nocrossjumping) +# Try if GCC understands __attribute__((unused)) +AC_MSG_CHECKING([how to suppress 'unused variable' warnings]) +AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',) +AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables]) +AC_MSG_RESULT($MAYBE_UNUSED) + AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine) AC_SUBST(asm_fs) @@ -401,37 +420,46 @@ fi #check how to do asm(".skip 16") AC_MSG_CHECKING([if and how we can waste code space]) -skipcode=no -for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16" -do +if test -z "$skipcode"; then + for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16" + do AC_TRY_RUN( -int foo(int); +[int foo(int,int,int); main() { - exit(foo(0)!=16); + exit(foo(0,0,0)!=16); } -int foo(int x) +int foo(int x, int y, int z) { + static void *labels[]={&&label1, &&label2}; if (x) { + y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */ label1: - asm("$i"); - label2: + asm(".skip 16"); /* or ".space 16" or somesuch */ + label2: ; } - return (&&label2)-(&&label1); -} + { + if (y) goto *labels[z]; /* workaround for gcc PR12108 */ + return labels[1]-labels[0]; + } +}] ,skipcode=$i; break ,,) -done + done +fi AC_MSG_RESULT($skipcode) if test "$skipcode" = no then - no_dynamic_default=1 + if test -z $no_dynamic_default; then + no_dynamic_default=1 + AC_MSG_WARN(Disabling default dynamic native code generation) + fi AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes) - AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2)) else AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes) fi +test "$no_dynamic_default" || no_dynamic_default=0 AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic) dnl Checks for programs. @@ -450,8 +478,11 @@ AC_CHECK_LIB(callback,__vacall_r) AC_CHECK_LIB(vacall,vacall) AC_CHECK_LIB(trampoline,alloc_trampoline) FFCALLFLAG="false" -test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries]) +OLDCALLFLAG="true" +test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && OLDCALLFLAG="false" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries]) +test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries]) AC_SUBST(FFCALLFLAG) +AC_SUBST(OLDCALLFLAG) if test "$host_os" != "nextstep3" then AC_FUNC_MEMCMP