# reset
_DEC_cc_style=
case "$isgcc" in
-gcc) _gcc_version=`$cc --version 2>&1 | tr . ' '`
- set $_gcc_version
- if test "$1" -lt 2 -o \( "$1" -eq 2 -a \( "$2" -lt 95 -o \( "$2" -eq 95 -a "$3" -lt 2 \) \) \); then
+gcc) if [ "X$gccversion" = "X" ]; then
+ # Done too late in Configure if hinted
+ gccversion=`$cc --version | sed 's/.*(GCC) *//'`
+ 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
cat >&4 <<EOF
-*** Your cc seems to be gcc and its version ($_gcc_version) seems to be
-*** less than 2.95.2. This is not a good idea since old versions of gcc
+*** Your cc seems to be gcc and its version ($gccversion) seems to be
+*** less than 2.95.3. This is not a good idea since old versions of gcc
*** are known to produce buggy code when compiling Perl (and no doubt for
*** other programs, too).
***
;;
esac
+## Optimization limits
+case "$isgcc" in
+gcc) # gcc 3.2.1 wants a lot of memory for -O3'ing toke.c
+cat >try.c <<EOF
+#include <sys/resource.h>
+
+int main ()
+{
+ struct rlimit rl;
+ int i = getrlimit (RLIMIT_DATA, &rl);
+ printf ("%d\n", rl.rlim_cur / (1024 * 1024));
+ } /* main */
+EOF
+$cc -o try $ccflags $ldflags try.c
+ maxdsiz=`./try`
+rm -f try try.c core
+if [ $maxdsiz -lt 256 ]; then
+ # less than 256 MB is probably not enough to optimize toke.c with gcc -O3
+ cat <<EOM >&4
+
+Your process datasize is limited to $maxdsiz MB, which is (sadly) not
+always enough to fully optimize some source code files of Perl,
+at least 256 MB seems to be necessary as of Perl 5.8.0. I'll try to
+use a lower optimization level for those parts. You could either try
+using your shell's ulimit/limit/limits command to raise your datasize
+(assuming the system-wide hard resource limits allow you to go higher),
+or if you can't go higher and if you are a sysadmin, and you *do* want
+the full optimization, you can tune the 'max_per_proc_data_size'
+kernel parameter: see man sysconfigtab, and man sys_attrs_proc.
+
+EOM
+toke_cflags='optimize=-O2'
+ fi
+;;
+esac
+
# we want dynamic fp rounding mode, and we want ieee exception semantics
case "$isgcc" in
gcc) ;;
# 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 <<EOF
+#include <pthread.h>
+extern int foo;
+EOF
+ $cc -c pthread.c 2> pthread.err
+ if grep -q "unrecognized compiler" pthread.err; then
+ cat >&4 <<EOF
+***
+*** I'm sorry but your C compiler ($cc) cannot be used to
+*** compile Perl with threads. The system C compiler should work.
+***
+
+Cannot continue, aborting.
+
+EOF
+ rm -f pthread.*
+ exit 1
+ fi
+ rm -f pthread.*
# Threads interfaces changed with V4.0.
case "$isgcc" in
- gcc) ccflags="-D_REENTRANT $ccflags" ;;
+ gcc)
+ ccflags="-D_REENTRANT $ccflags"
+ ;;
*) case "`uname -r`" in
*[123].*) ccflags="-threads $ccflags" ;;
*) ccflags="-pthread $ccflags" ;;
esac
case "$usemymalloc" in
- '')
- usemymalloc='n'
+ ''|'n') usemymalloc='n'
+ ;;
+ *) # The FILLCHECK_DEADBEEF() are failing.
+ case "$ccflags" in
+ *-DFILL_CHECK_DEFAULT=*) ;;
+ *) ccflags="$ccflags -DFILL_CHECK_DEFAULT=0" ;;
+ esac
;;
esac
# These symbols are renamed in <time.h> so
*[1-4].0*) d_modfl=undef ;; # must wait till 5.0
esac
-case "$loclibpth" in
-'') ;;
-*)
- needusrshlib=''
- for p in $loclibpth
- do
- if test -n "`ls $p/libdb.so* 2>/dev/null`"; then
- needusrshlib=yes
- fi
- if test -d $p; then
- echo "Appending $p to LD_LIBRARY_PATH." >& 4
- case "$LD_LIBRARY_PATH" in
- '') LD_LIBRARY_PATH=$p ;;
- *) LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$p ;;
- esac
- fi
- done
- echo "LD_LIBRARY_PATH is now $LD_LIBRARY_PATH." >& 4
- # This is evil but I can't think of a nice workaround:
- # the /usr/shlib/libdb.so needs to be seen first,
- # or running Configure will fail.
- if test -n "$needusrshlib"; then
- echo "Prepending /usr/shlib to loclibpth." >& 4
- loclibpth="/usr/shlib $loclibpth"
- echo "loclibpth is now $loclibpth." >& 4
- fi
- ;;
+# Keep that leading tab.
+ old_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
+for p in $loclibpth
+do
+ if test -d $p; then
+ echo "Appending $p to LD_LIBRARY_PATH." >& 4
+ case "$LD_LIBRARY_PATH" in
+ '') LD_LIBRARY_PATH=$p ;;
+ *) LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$p ;;
+ esac
+ fi
+done
+case "$LD_LIBRARY_PATH" in
+"$old_LD_LIBRARY_PATH") ;;
+*) echo "LD_LIBRARY_PATH is now $LD_LIBRARY_PATH." >& 4 ;;
+esac
+case "$LD_LIBRARY_PATH" in
+'') ;;
+* ) export LD_LIBRARY_PATH ;;
esac
#
projects / p5sagit/p5-mst-13.2.git / blobdiff