X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=hints%2Fdec_osf.sh;h=fd0100305b4072407cefc81eb01eb15aaba30d86;hb=55ec0dff636c2a8ee5225314d7d46f928ab7f6da;hp=5b15fade2f677d6635275d1e9dae439e7df1a704;hpb=5460b889677b9f352c882dbcd4ad4470b8281664;p=p5sagit%2Fp5-mst-13.2.git diff --git a/hints/dec_osf.sh b/hints/dec_osf.sh index 5b15fad..fd01003 100644 --- a/hints/dec_osf.sh +++ b/hints/dec_osf.sh @@ -60,6 +60,42 @@ cc=${cc:-cc} +# Intentional leading tabs. + myosvers="`/usr/sbin/sizer -v 2>/dev/null || uname -r`" + unamer="`uname -r`" + +# Fancy compiler suites use optimising linker as well as compiler. +# +case "$unamer" in +*[123].*) # old loader + lddlflags="$lddlflags -O3" + ;; +*) if $test "X$optimize" = "X$undef"; then + lddlflags="$lddlflags -msym" + else + case "$myosvers" in + *4.0D*) + # QAR 56761: -O4 + .so may produce broken code, + # fixed in 4.0E or better. + ;; + *) + lddlflags="$lddlflags $optimize" + ;; + esac + # -msym: If using a sufficiently recent /sbin/loader, + # keep the module symbols with the modules. + lddlflags="$lddlflags -msym $_lddlflags_strict_ansi" + fi + ;; +esac +# Yes, the above loses if gcc does not use the system linker. +# If that happens, let me know about it. + +# Because there is no other handy way to recognize 3.X. +case "$unamer" in +*3.*) ccflags="$ccflags -DDEC_OSF1_3_X" ;; +esac + case "`$cc -v 2>&1 | grep cc`" in *gcc*) isgcc=gcc ;; esac @@ -71,7 +107,7 @@ esac case "$isgcc" in gcc) if [ "X$gccversion" = "X" ]; then # Done too late in Configure if hinted - gccversion=`$cc --version | sed 's/.*(GCC) *//'` + gccversion=`$cc -dumpversion` fi set $gccversion if test "$1" -lt 2 -o \( "$1" -eq 2 -a \( "$2" -lt 95 -o \( "$2" -eq 95 -a "$3" -lt 3 \) \) \); then @@ -84,7 +120,7 @@ gcc) if [ "X$gccversion" = "X" ]; then *** *** Therefore, I strongly suggest upgrading your gcc. (Why don't you use *** the vendor cc is also a good question. It comes with the operating -*** system and produces good code.) +*** system, produces good code, and is very ANSI C fastidious.) Cannot continue, aborting. @@ -105,11 +141,16 @@ Since you explicitly chose gcc, I assume that you know what are doing. EOF fi + # -ansi is fine for gcc in Tru64 (-ansi is not universally so). + _ccflags_strict_ansi="-ansi" ;; -*) # compile something small: taint.c is fine for this. +*) # compile something. + cat >try.c <&1`" in + # the main point is the '-v' flag of 'cc'. + case "`cc -v -c try.c 2>&1`" in */gemc_cc*) # we have the new DEC GEM CC _DEC_cc_style=new ;; @@ -117,17 +158,58 @@ EOF _DEC_cc_style=old ;; esac - # cleanup - rm -f taint$$.o + # We need to figure out whether -c99 is a valid flag to use. + # If it is, we can use it for being nauseatingly C99 ANSI -- + # but even then the lddlflags needs to stay -std1. + # If it is not, we must use -std1 for both flags. + # + case "`cc -c99 try.c 2>&1`" in + *"-c99: Unknown flag"*) + _ccflags_strict_ansi="-std1" + ;; + *) # However, use the -c99 only if compiling for + # -DPERL_MEM_LOG, where the C99 feature __func__ + # is useful to have. Otherwise use the good old + # -std1 so that we stay C89 strict, which the goal + # of the Perl C code base (no //, no code between + # declarations, etc). Moreover, the Tru64 cc is + # not fully C99, and most probably never will be. + # + # The -DPERL_MEM_LOG can be either in ccflags + # (if using an old config.sh) or in the command line + # (which has been stowed away in UU/cmdline.opt). + # + case "$ccflags `cat UU/cmdline.opt`" in + *-DPERL_MEM_LOG*) _ccflags_strict_ansi="-c99" ;; + *) _ccflags_strict_ansi="-std1" ;; + esac + ;; + esac + _lddlflags_strict_ansi="-std1" + # -no_ansi_alias because Perl code is not that strict + # (also gcc uses by default -fno-strict-aliasing). + case "$unamer" in + *[1234].*) ;; + *5.*) _ccflags_strict_ansi="$_ccflags_strict_ansi -no_ansi_alias" ;; + esac + # Cleanup. + rm -f try.c try.o ;; esac -# be nauseatingly ANSI -case "$isgcc" in -gcc) ccflags="$ccflags -ansi" - ;; -*) ccflags="$ccflags -std" - ;; +# Be nauseatingly ANSI +ccflags="$ccflags $_ccflags_strict_ansi" + +# g++ needs a lot of definitions to see the same set of +# prototypes from et alia as cxx/cc see. +# Note that we cannot define _XOPEN_SOURCE_EXTENDED or +# its moral equivalent, _XOPEN_SOURCE=500 (which would +# define a lot of the required prototypes for us), because +# the gcc-processed version of contains fatally +# conflicting prototypes for wait3(). The _SOCKADDR_LEN is +# needed to get struct sockaddr and struct sockaddr_in to align. +case "$cc" in +*g++*) ccflags="$ccflags -D_XOPEN_SOURCE -D_OSF_SOURCE -D_AES_SOURCE -D_BSD -D_POSIX_C_SOURCE=199309L -D_POSIX_PII_SOCKET -D_SOCKADDR_LEN" ;; esac # for gcc the Configure knows about the -fpic: @@ -141,17 +223,28 @@ case "$optimize" in *) case "$_DEC_cc_style" in new) optimize='-O4' ;; old) optimize='-O2 -Olimit 3200' ;; - esac + esac ccflags="$ccflags -D_INTRINSICS" ;; esac ;; esac +case "$isgcc" in +gcc) ;; +*) case "$optimize" in + *-O*) # With both -O and -g, the -g must be -g3. + optimize="`echo $optimize | sed 's/-g[1-4]*/-g3/'`" + ;; + esac + ;; +esac + ## Optimization limits case "$isgcc" in gcc) # gcc 3.2.1 wants a lot of memory for -O3'ing toke.c cat >try.c < #include int main () @@ -184,9 +277,20 @@ toke_cflags='optimize=-O2' ;; esac +# The patch 23787 +# http://public.activestate.com/cgi-bin/perlbrowse?patch=23787 +# broke things for gcc (at least gcc 3.3) so that many of the pack() +# checksum tests for formats L, j, J, especially when combined +# with the < and > specifiers, started to fail if compiled with plain -O3. +case "$isgcc" in +gcc) +pp_pack_cflags='optimize="-O3 -fno-cse-skip-blocks"' +;; +esac + # we want dynamic fp rounding mode, and we want ieee exception semantics case "$isgcc" in -gcc) ;; +gcc) ccflags="$ccflags -mfp-rounding-mode=d -mieee" ;; *) case "$_DEC_cc_style" in new) ccflags="$ccflags -fprm d -ieee" ;; esac @@ -225,40 +329,12 @@ libswanted="`echo $libswanted | sed -e 's/ ndbm / /'`" # the basic lddlflags used always lddlflags='-shared -expect_unresolved "*"' -# Fancy compiler suites use optimising linker as well as compiler. -# -case "`uname -r`" in -*[123].*) # old loader - lddlflags="$lddlflags -O3" - ;; -*) if $test "X$optimize" = "X$undef"; then - lddlflags="$lddlflags -msym" - else - case "`/usr/sbin/sizer -v`" in - *4.0D*) - # QAR 56761: -O4 + .so may produce broken code, - # fixed in 4.0E or better. - ;; - *) - lddlflags="$lddlflags $optimize" - ;; - esac - # -msym: If using a sufficiently recent /sbin/loader, - # keep the module symbols with the modules. - lddlflags="$lddlflags -msym -std" - fi - ;; -esac -# Yes, the above loses if gcc does not use the system linker. -# If that happens, let me know about it. - - # If debugging or (old systems and doing shared) # then do not strip the lib, otherwise, strip. # As noted above the -DDEBUGGING is added automagically by Configure if -g. case "$optimize" in *-g*) ;; # left intentionally blank -*) case "`uname -r`" in +*) case "$unamer" in *[123].*) case "$useshrplib" in false|undef|'') lddlflags="$lddlflags -s" ;; @@ -266,8 +342,8 @@ case "$optimize" in ;; *) lddlflags="$lddlflags -s" ;; - esac - ;; + esac + ;; esac # @@ -286,7 +362,7 @@ esac # emulate_eaccess(). # Fixed in V5.0A. -case "`/usr/sbin/sizer -v`" in +case "$myosvers" in *5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*) : ok ;; @@ -299,20 +375,43 @@ esac # The off_t is already 8 bytes, so we do have largefileness. cat > UU/usethreads.cbu <<'EOCBU' -# This script UU/usethreads.cbu will get 'called-back' by Configure +# This script UU/usethreads.cbu will get 'called-back' by Configure # after it has prompted the user for whether to use threads. case "$usethreads" in $define|true|[yY]*) + # In Tru64 V5 (at least V5.1A, V5.1B) gcc (at least 3.2.2) + # cannot be used to compile a threaded Perl. + cat > pthread.c < +extern int foo; +EOF + $cc -c pthread.c 2> pthread.err + if egrep -q "unrecognized compiler|syntax error" pthread.err; then + cat >&4 < UU/uselongdouble.cbu <<'EOCBU' -# This script UU/uselongdouble.cbu will get 'called-back' by Configure +# This script UU/uselongdouble.cbu will get 'called-back' by Configure # after it has prompted the user for whether to use long doubles. case "$uselongdouble" in $define|true|[yY]*) - case "`/usr/sbin/sizer -v`" in + case "$myosvers" in *[1-4].0*) cat >&4 <try.c <<\TRY #include int main(int argc, char **argv) @@ -367,7 +471,7 @@ TRY # Don't bother trying to work with Configure's idea of # cc and the various flags. This might not work as-is # with gcc -- but we're testing libc, not the compiler. - if cc -o try -std try.c && ./try + if cc -o try $_ccflags_strict_ansi try.c && ./try then : ok else @@ -389,7 +493,7 @@ UGLY esac EOCBU -case "`/usr/sbin/sizer -v`" in +case "$myosvers" in *[1-4].0*) d_modfl=undef ;; # must wait till 5.0 esac @@ -403,7 +507,7 @@ do '') LD_LIBRARY_PATH=$p ;; *) LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$p ;; esac - fi + fi done case "$LD_LIBRARY_PATH" in "$old_LD_LIBRARY_PATH") ;; @@ -414,12 +518,33 @@ case "$LD_LIBRARY_PATH" in * ) export LD_LIBRARY_PATH ;; esac +# Enforce strict data. +case "$isgcc" in +gcc) ;; +*) # -trapuv poisons uninitialized stack with + # 0xfff58005fff58005 which is as a pointer a segmentation fault and + # as a floating point a signaling NaN. As integers/longs that causes + # no traps but at least it is not zero. + # -readonly_strings moves string constants into read-only section + # which hopefully means that modifying them leads into segmentation + # faults. + # + for i in -trapuv -readonly_strings + do + case "$ccflags" in + *$i*) ;; + *) ccflags="$ccflags $i" ;; + esac + done + ;; +esac + # # Unset temporary variables no more needed. # unset _DEC_cc_style - + # # History: # @@ -459,14 +584,14 @@ unset _DEC_cc_style # * Restructuring Spider's suggestions. # # * Older Digital UNIXes cannot handle -Olimit ... for $lddlflags. -# +# # * ld -s cannot be used in older Digital UNIXes when doing shared. # # # 21-Feb-1997 Spider Boardman # # * -hidden removed. -# +# # * -DSTANDARD_C removed. # # * -D_INTRINSICS added. (that -fast does not seem to buy much confirmed) @@ -532,7 +657,7 @@ unset _DEC_cc_style # # * now 'dl' is always removed from libswanted. Not only if # optimize is an empty string. -# +# # # 17-Jan-1997 Achim Bohnet # @@ -542,10 +667,11 @@ unset _DEC_cc_style # Because the dlopen, dlclose,... calls are in the # C library it not necessary at all to check for the # dl library. Therefore dl is removed from libswanted. -# +# # # 1-Jan-1997 Achim Bohnet -# +# # * Set -Olimit to 3200 because perl_yylex.c got too big # for the optimizer. # +