d_setruid='undef'
alignbytes=8
-
case "$usemymalloc" in
'') usemymalloc='n' ;;
esac
ccflags="$ccflags -D_ALL_SOURCE -D_ANSI_C_SOURCE -D_POSIX_SOURCE"
case "$cc" in
*gcc*) ;;
- *) ccflags="$ccflags -qmaxmem=-1 -qnoansialias" ;;
+ *) ccflags="$ccflags -qmaxmem=-1 -qnoansialias -qlanglvl=extc99" ;;
esac
nm_opt='-B'
d_setgrent_r='undef'
d_setpwent_r='undef'
d_srand48_r='undef'
+ d_srandom_r='undef'
d_strerror_r='undef'
ccflags="$ccflags -DNEED_PTHREAD_INIT"
cc_r)
;;
xlc_r)
- # for -qlonglong
- ccflags="$ccflags -qlanglvl=extended"
;;
# we do not need the C++ compiler
xlC_r)
- # for -qlonglong
- ccflags="$ccflags -qlanglvl=extended"
cc=xlc_r
;;
'')
*)
case "$cc" in
xlc)
- # for -qlonglong
- ccflags="$ccflags -qlanglvl=extended"
;;
# we do not need the C++ compiler
xlC)
- # for -qlonglong
- ccflags="$ccflags -qlanglvl=extended"
cc=xlc
;;
*)
$define|true|[yY]*) cc="$cc -q64" ;;
*) cc="$cc -q32" ;;
esac
+ # Some 32-bit getconfs will set ccflags to include -qlonglong
+ # but that's no longer needed with an explicit -qextc99.
+ ccflags="`echo $ccflags | sed -e 's@ -qlonglong@@'`"
;;
*) # Remove xlc-specific -qflags.
ccflags="`echo $ccflags | sed -e 's@ -q[^ ]*@ @g' -e 's@^-q[^ ]* @@g'`"
libswanted=`echo " $libswanted " | sed -e 's/ BSD / /'`
d_flock='undef'
+# remove libgdbm from wanted libraries
+# The libgdbm < 1.8.3-5 from the AIX Toolbox is not working
+# because two wrong .h are present
+if [ -f "/opt/freeware/include/gdbm/dbm.h" ] ||
+ [ -f "/opt/freeware/include/gdbm/ndbm.h" ]; then
+ echo "GDBM support disabled because your GDBM package contains extraneous headers - see README.aix."
+ libswanted=`echo " $libswanted " | sed -e 's/ gdbm / /'`
+ i_gdbm='undef'
+ i_gdbmndbm='undef'
+fi
+
+# Some releases (and patch levels) of AIX cannot have both
+# long doubles and infinity (infinity plus one equals ... NaNQ!)
+#
+# This deficiency, and others, is apparently a well-documented feature
+# of AIX 128-bit long doubles:
+#
+# http://www-01.ibm.com/support/knowledgecenter/ssw_aix_61/com.ibm.aix.genprogc/128bit_long_double_floating-point_datatype.htm
+#
+# The URL seems to be fragile, it has moved around over the years,
+# but searching AIX docs at ibm.com for "128-bit long double
+# floating-point data type" should surface the latest info.
+#
+# Some salient points:
+#
+# <quote>
+# * The 128-bit implementation differs from the IEEE standard for long double
+# in the following ways:
+# * Supports only round-to-nearest mode. If the application changes
+# the rounding mode, results are undefined.
+# * Does not fully support the IEEE special numbers NaN and INF.
+# * Does not support IEEE status flags for overflow, underflow,
+# and other conditions. These flags have no meaning for the 128-bit
+# long double inplementation.
+# * The 128-bit long double data type does not support the following math
+# APIs: atanhl, cbrtl, copysignl, exp2l, expm1l, fdiml, fmal, fmaxl,
+# fminl, hypotl, ilogbl, llrintl, llroundl, log1pl, log2l, logbl,
+# lrintl, lroundl, nanl, nearbyintl, nextafterl, nexttoward,
+# nexttowardf, nexttowardl, remainderl, remquol, rintl, roundl,
+# scalblnl, scalbnl, tgammal, and truncl.
+# * The representation of 128-bit long double numbers means that the
+# following macros required by standard C in the values.h file do not
+# have clear meaning:
+# * Number of bits in the mantissa (LDBL_MANT_DIG)
+# * Epsilon (LBDL_EPSILON)
+# * Maximum representable finite value (LDBL_MAX)
+# </quote>
+#
+# The missing math functions affect the POSIX extension math interfaces.
+
+case "$uselongdouble" in
+'')
+ echo "Checking if your infinity is working with long doubles..." >&4
+ cat > inf$$.c <<EOF
+#include <math.h>
+#include <stdio.h>
+int main() {
+ long double inf = INFINITY;
+ long double one = 1.0L;
+ printf("%Lg\n", inf + one);
+}
+EOF
+ $cc -qlongdouble -o inf$$ inf$$.c -lm
+ case `./inf$$` in
+ INF) echo "Your infinity is working correctly with long doubles." >&4 ;;
+ *) # NaNQ (or anything else than INF)
+ echo " "
+ echo "Your infinity is broken, I suggest disabling long doubles." >&4
+ rp="Disable long doubles?"
+ dflt="y"
+ . UU/myread
+ case "$ans" in
+ [Yy]*)
+ echo "Okay, disabling long doubles." >&4
+ uselongdouble="$undef"
+ ccflags=`echo " $ccflags " | sed -e 's/ -qlongdouble / /'`
+ libswanted=`echo " $libswanted " | sed -e 's/ c128/ /'`
+ lddlflags=`echo " $lddlflags " | sed -e 's/ -lc128 / /'`
+ ;;
+ *)
+ echo "Okay, keeping long doubles enabled." >&4
+ ;;
+ esac
+ ;;
+ esac
+ rm -f inf$$.c inf$$
+ ;;
+esac
+
+# Some releases (and patch levels) of AIX have a broken powl().
+pp_cflags=''
+case "$uselongdouble" in
+define)
+ echo "Checking if your powl() is broken..." >&4
+ cat > powl$$.c <<EOF
+#include <math.h>
+#include <stdio.h>
+int main() {
+ printf("%Lg\n", powl(-3.0L, 2.0L));
+}
+EOF
+ case "$gccversion" in
+ '') $cc -qlongdouble -o powl$$ powl$$.c -lm ;;
+ *) $cc -o powl$$ powl$$.c -lm ;;
+ esac
+ case `./powl$$` in
+ 9) echo "Your powl() is working correctly." >&4 ;;
+ *)
+ echo "Your powl() is broken, will use a workaround." >&4
+ pp_cflags='ccflags="$ccflags -DHAS_AIX_POWL_NEG_BASE_BUG"'
+ ;;
+ esac
+ rm -f powl$$.c powl$$
+ ;;
+esac
+
+# Some releases of AIX cc/xlc a broken fmodl(), but -q64 seems to help.
+case "$gccversion" in
+'') case "$uselongdouble" in
+ define)
+ case "$ccflags" in
+ *-q64*) ;;
+ *) echo "Checking if your fmodl() is broken..." >&4
+ cat > fmodl$$.c <<EOF
+#include <math.h>
+#include <stdio.h>
+int main() {
+ printf("%ld\n", (long)fmodl(powl(2, 31), (long double)4294967295));
+}
+EOF
+ $cc -qlongdouble -o fmodl$$ fmodl$$.c -lm
+ case `./fmodl$$` in
+ 2147483648) echo "Your fmodl() is working correctly." >&4 ;;
+ *) echo "Your fmodl() is broken, will try with -q64..." >&4
+ $cc -q64 -qlongdouble -o fmodl$$ fmodl$$.c -lm
+ case `./fmodl$$` in
+ 2147483648)
+ echo "The -q64 did the trick, will use it." >& 4
+ ccflags="`echo $ccflags | sed -e 's@-q32@@g'`"
+ ldflags="`echo $ldflags | sed -e 's@-q32@@g'`"
+ ccflags="$ccflags -q64"
+ ldflags="$ldflags -q64"
+ ;;
+ *) echo "Not even the -q64 worked. I'm disabling long doubles." >&4
+ echo "And you should have stern talk with your IBM rep." >&4
+ uselongdouble="$undef"
+ ccflags=`echo " $ccflags " | sed -e 's/ -qlongdouble / /'`
+ libswanted=`echo " $libswanted " | sed -e 's/ c128/ /'`
+ lddlflags=`echo " $lddlflags " | sed -e 's/ -lc128 / /'`
+ ;;
+ esac # second fmodl$$
+ ;;
+ esac # first fmodl$$
+ ;;
+ esac # Checking if ...
+ ;;
+ esac # uselongdouble
+ rm -f fmodl$$.c fmodl$$
+ ;;
+esac # not gcc
+
+
# EOF
https://perl5.git.perl.org / perl5.git / blobdiff