closes bpo-33512: use standard for detecting long double (GH-6847)
This commit is contained in:
Eitan Adler
Benjamin Peterson
parent
2a7bacbd91
commit
3055c947f9
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@ -0,0 +1 @@
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configure's check for "long double" has been simplified
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@ -779,7 +779,6 @@ infodir
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docdir
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oldincludedir
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includedir
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runstatedir
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localstatedir
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sharedstatedir
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sysconfdir
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@ -887,7 +886,6 @@ datadir='${datarootdir}'
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sysconfdir='${prefix}/etc'
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sharedstatedir='${prefix}/com'
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localstatedir='${prefix}/var'
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runstatedir='${localstatedir}/run'
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includedir='${prefix}/include'
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oldincludedir='/usr/include'
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docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
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@ -1140,15 +1138,6 @@ do
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| -silent | --silent | --silen | --sile | --sil)
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silent=yes ;;
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-runstatedir | --runstatedir | --runstatedi | --runstated \
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| --runstate | --runstat | --runsta | --runst | --runs \
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| --run | --ru | --r)
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ac_prev=runstatedir ;;
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-runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
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| --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
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| --run=* | --ru=* | --r=*)
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runstatedir=$ac_optarg ;;
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-sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
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ac_prev=sbindir ;;
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-sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
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@ -1286,7 +1275,7 @@ fi
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for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
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datadir sysconfdir sharedstatedir localstatedir includedir \
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oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
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libdir localedir mandir runstatedir
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libdir localedir mandir
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do
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eval ac_val=\$$ac_var
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# Remove trailing slashes.
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@ -1439,7 +1428,6 @@ Fine tuning of the installation directories:
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--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
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--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
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--localstatedir=DIR modifiable single-machine data [PREFIX/var]
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--runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
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--libdir=DIR object code libraries [EPREFIX/lib]
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--includedir=DIR C header files [PREFIX/include]
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--oldincludedir=DIR C header files for non-gcc [/usr/include]
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@ -8603,32 +8591,48 @@ _ACEOF
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for long double support" >&5
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$as_echo_n "checking for long double support... " >&6; }
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have_long_double=no
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for long double" >&5
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$as_echo_n "checking for long double... " >&6; }
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if ${ac_cv_type_long_double+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test "$GCC" = yes; then
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ac_cv_type_long_double=yes
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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/* The Stardent Vistra knows sizeof (long double), but does
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not support it. */
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long double foo = 0.0L;
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int
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main ()
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{
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long double x; x = (long double)0;
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static int test_array [1 - 2 * !(/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
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sizeof (double) <= sizeof (long double))];
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test_array [0] = 0;
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return test_array [0];
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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ac_cv_type_long_double=yes
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else
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ac_cv_type_long_double=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_long_double" >&5
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$as_echo "$ac_cv_type_long_double" >&6; }
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if test $ac_cv_type_long_double = yes; then
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$as_echo "#define HAVE_LONG_DOUBLE 1" >>confdefs.h
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have_long_double=yes
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_long_double" >&5
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$as_echo "$have_long_double" >&6; }
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if test "$have_long_double" = yes ; then
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# The cast to long int works around a bug in the HP C Compiler
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# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
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# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
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@ -8662,7 +8666,6 @@ cat >>confdefs.h <<_ACEOF
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_ACEOF
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fi
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# The cast to long int works around a bug in the HP C Compiler
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# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
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10
configure.ac
10
configure.ac
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@ -2198,16 +2198,8 @@ AC_CHECK_SIZEOF(size_t, 4)
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AC_CHECK_SIZEOF(pid_t, 4)
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AC_CHECK_SIZEOF(uintptr_t)
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AC_MSG_CHECKING(for long double support)
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have_long_double=no
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[long double x; x = (long double)0;]])],[
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AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define this if you have the type long double.])
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have_long_double=yes
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],[])
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AC_MSG_RESULT($have_long_double)
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if test "$have_long_double" = yes ; then
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AC_TYPE_LONG_DOUBLE
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AC_CHECK_SIZEOF(long double, 16)
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fi
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AC_CHECK_SIZEOF(_Bool, 1)
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@ -617,7 +617,7 @@
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/* Define to 1 if you have the `log2' function. */
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#undef HAVE_LOG2
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/* Define this if you have the type long double. */
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/* Define to 1 if the system has the type `long double'. */
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#undef HAVE_LONG_DOUBLE
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/* Define to 1 if you have the `lstat' function. */
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