[PATCH v5] configure: Replaced obsolete AC_TRY_COMPILE
Adhemerval Zanella
adhemerval.zanella@linaro.org
Fri Jun 4 13:15:53 GMT 2021
On 21/05/2021 23:42, Naohiro Tamura wrote:
> This patch replaced obsolete AC_TRY_COMPILE to AC_COMPILE_IFELSE or
> AC_PREPROC_IFELSE.
> It has been confirmed that GNU 'autoconf' 2.69 suppressed obsolete
> warnings, updated the following files:
> - configure
> - sysdeps/mach/configure
> - sysdeps/mach/hurd/configure
> - sysdeps/s390/configure
> - sysdeps/unix/sysv/linux/configure
> and didn't change the following files:
> - sysdeps/ieee754/ldbl-opt/configure
> - sysdeps/unix/sysv/linux/powerpc/configure
LGTM, I regenerate the configure using autoconf 2.69 to certify there is
no difference.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
I will commit this for you.
> ---
> aclocal.m4 | 1 +
> configure | 46 ++++++++++++++++++--
> configure.ac | 19 ++++----
> sysdeps/ieee754/ldbl-opt/configure.ac | 8 ++--
> sysdeps/mach/configure | 38 ----------------
> sysdeps/mach/configure.ac | 8 ++--
> sysdeps/mach/hurd/configure | 5 ++-
> sysdeps/mach/hurd/configure.ac | 10 ++---
> sysdeps/s390/configure | 5 ++-
> sysdeps/s390/configure.ac | 4 +-
> sysdeps/unix/sysv/linux/configure | 9 ++--
> sysdeps/unix/sysv/linux/configure.ac | 8 ++--
> sysdeps/unix/sysv/linux/powerpc/configure.ac | 8 ++--
> 13 files changed, 88 insertions(+), 81 deletions(-)
>
> diff --git a/aclocal.m4 b/aclocal.m4
> index 08fa1ac6d053..c195c4db5677 100644
> --- a/aclocal.m4
> +++ b/aclocal.m4
> @@ -34,6 +34,7 @@ AC_PROVIDE([AS_SHELL_FN_as_fn_set_status])dnl
> AC_PROVIDE([AS_SHELL_FN_as_fn_exit])dnl
> AC_PROVIDE([AS_SHELL_FN_as_fn_arith])dnl
> AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_compile])dnl
> +AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_cpp])dnl
> define([AS_MESSAGE_LOG_FD],5)dnl
> define([AS_MESSAGE_FD],6)dnl
> dnl Ripped out of AS_INIT, which does more cruft we do not want.+
Ok.
> diff --git a/configure b/configure
> index 4cc462613c9f..1a3bad3c869e 100755
> --- a/configure
> +++ b/configure
> @@ -1746,6 +1746,43 @@ fi
> as_fn_set_status $ac_retval
>
> } # ac_fn_c_try_link
> +
> +# ac_fn_c_try_cpp LINENO
> +# ----------------------
> +# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
> +ac_fn_c_try_cpp ()
> +{
> + as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
> + if { { ac_try="$ac_cpp conftest.$ac_ext"
> +case "(($ac_try" in
> + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
> + *) ac_try_echo=$ac_try;;
> +esac
> +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
> +$as_echo "$ac_try_echo"; } >&5
> + (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
> + ac_status=$?
> + if test -s conftest.err; then
> + grep -v '^ *+' conftest.err >conftest.er1
> + cat conftest.er1 >&5
> + mv -f conftest.er1 conftest.err
> + fi
> + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
> + test $ac_status = 0; } > conftest.i && {
> + test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
> + test ! -s conftest.err
> + }; then :
> + ac_retval=0
> +else
> + $as_echo "$as_me: failed program was:" >&5
> +sed 's/^/| /' conftest.$ac_ext >&5
> +
> + ac_retval=1
> +fi
> + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
> + as_fn_set_status $ac_retval
> +
> +} # ac_fn_c_try_cpp
> cat >config.log <<_ACEOF
> This file contains any messages produced by compilers while
> running configure, to aid debugging if configure makes a mistake.
> @@ -3763,6 +3800,7 @@ else
> fi
>
>
> +
> cat confdefs.h - <<_ACEOF >conftest.$ac_ext
> /* end confdefs.h. */
>
> @@ -3777,12 +3815,12 @@ main ()
> return 0;
> }
> _ACEOF
> -if ac_fn_c_try_compile "$LINENO"; then :
> +if ac_fn_c_try_cpp "$LINENO"; then :
> libc_cv_compiler_default_cet=yes
> else
> libc_cv_compiler_default_cet=no
> fi
> -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +rm -f conftest.err conftest.i conftest.$ac_ext
>
> # Check whether --enable-cet was given.
> if test "${enable_cet+set}" = set; then :
> @@ -5158,12 +5196,12 @@ main ()
> return 0;
> }
> _ACEOF
> -if ac_fn_c_try_compile "$LINENO"; then :
> +if ac_fn_c_try_cpp "$LINENO"; then :
> libc_cv_compiler_ok=yes
> else
> libc_cv_compiler_ok=no
> fi
> -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +rm -f conftest.err conftest.i conftest.$ac_ext
> fi
> { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_compiler_ok" >&5
> $as_echo "$libc_cv_compiler_ok" >&6; }
> diff --git a/configure.ac b/configure.ac
> index 64be29d87777..293a33565a1d 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -466,10 +466,10 @@ AC_ARG_ENABLE([mathvec],
> [build_mathvec=$enableval],
> [build_mathvec=notset])
>
> -AC_TRY_COMPILE([], [
> +AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[]], [[
> #ifndef __CET__
> # error no CET compiler support
> -#endif],
> +#endif]])],
> [libc_cv_compiler_default_cet=yes],
> [libc_cv_compiler_default_cet=no])
>
Ok.
> @@ -1034,10 +1034,10 @@ AC_CHECK_PROG_VER(BISON, bison, --version,
> [2.7*|[3-9].*|[1-9][0-9]*], critic_missing="$critic_missing bison")
>
> AC_CACHE_CHECK([if $CC is sufficient to build libc], libc_cv_compiler_ok, [
> -AC_TRY_COMPILE([], [
> +AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[]], [[
> #if !defined __GNUC__ || __GNUC__ < 6 || (__GNUC__ == 6 && __GNUC_MINOR__ < 2)
> #error insufficient compiler
> -#endif],
> +#endif]])],
> [libc_cv_compiler_ok=yes],
> [libc_cv_compiler_ok=no])])
> AS_IF([test $libc_cv_compiler_ok != yes],
Ok.
> @@ -1648,11 +1648,14 @@ CPPUNDEFS=
> dnl Check for silly hacked compilers predefining _FORTIFY_SOURCE.
> dnl Since we are building the implementations of the fortified functions here,
> dnl having the macro defined interacts very badly.
> +dnl _FORTIFY_SOURCE requires compiler optimization level 1 (gcc -O1)
> +dnl and above (see "man FEATURE_TEST_MACROS").
> +dnl So do NOT replace AC_COMPILE_IFELSE with AC_PREPROC_IFELSE.
> AC_CACHE_CHECK([for _FORTIFY_SOURCE predefine], libc_cv_predef_fortify_source,
> -[AC_TRY_COMPILE([], [
> +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
> #ifdef _FORTIFY_SOURCE
> # error bogon
> -#endif],
> +#endif]])],
> [libc_cv_predef_fortify_source=no],
> [libc_cv_predef_fortify_source=yes])])
> if test $libc_cv_predef_fortify_source = yes; then
Ok.
> @@ -1720,7 +1723,7 @@ fi
> AC_CACHE_CHECK(for __builtin_trap with no external dependencies,
> libc_cv_builtin_trap, [dnl
> libc_cv_builtin_trap=no
> -AC_TRY_COMPILE([], [__builtin_trap ()], [
> +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[__builtin_trap ()]])],[
> libc_undefs=`$NM -u conftest.o |
> LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \
> 2>&AS_MESSAGE_LOG_FD` || {
> @@ -1729,7 +1732,7 @@ libc_undefs=`$NM -u conftest.o |
> echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'"
> if test -z "$libc_undefs"; then
> libc_cv_builtin_trap=yes
> -fi])])
> +fi],[])])
> if test $libc_cv_builtin_trap = yes; then
> AC_DEFINE([HAVE_BUILTIN_TRAP])
> fi
Ok.
> diff --git a/sysdeps/ieee754/ldbl-opt/configure.ac b/sysdeps/ieee754/ldbl-opt/configure.ac
> index a77fadd1c428..70e3b32dc667 100644
> --- a/sysdeps/ieee754/ldbl-opt/configure.ac
> +++ b/sysdeps/ieee754/ldbl-opt/configure.ac
> @@ -6,13 +6,13 @@ AC_CACHE_CHECK(whether $CC $CFLAGS supports -mlong-double-128,
> libc_cv_mlong_double_128, [dnl
> save_CFLAGS="$CFLAGS"
> CFLAGS="$CFLAGS -mlong-double-128"
> -AC_TRY_COMPILE(, [
> +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
> #ifndef __LONG_DOUBLE_128__
> # error "compiler did not predefine __LONG_DOUBLE_128__ as expected"
> #endif
> -long double foobar (long double x) { return x; }],
> - libc_cv_mlong_double_128=yes,
> - libc_cv_mlong_double_128=no)
> +long double foobar (long double x) { return x; }]])],
> + [libc_cv_mlong_double_128=yes],
> + [libc_cv_mlong_double_128=no])
> CFLAGS="$save_CFLAGS"])
> if test "$libc_cv_mlong_double_128" = no; then
> AC_MSG_ERROR([this configuration requires -mlong-double-128 support])
Ok.
> diff --git a/sysdeps/mach/configure b/sysdeps/mach/configure
> index c6ea9be20b3b..739f1028a46f 100644
> --- a/sysdeps/mach/configure
> +++ b/sysdeps/mach/configure
> @@ -1,42 +1,4 @@
>
> -
> -# ac_fn_c_try_cpp LINENO
> -# ----------------------
> -# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
> -ac_fn_c_try_cpp ()
> -{
> - as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
> - if { { ac_try="$ac_cpp conftest.$ac_ext"
> -case "(($ac_try" in
> - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
> - *) ac_try_echo=$ac_try;;
> -esac
> -eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
> -$as_echo "$ac_try_echo"; } >&5
> - (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
> - ac_status=$?
> - if test -s conftest.err; then
> - grep -v '^ *+' conftest.err >conftest.er1
> - cat conftest.er1 >&5
> - mv -f conftest.er1 conftest.err
> - fi
> - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
> - test $ac_status = 0; } > conftest.i && {
> - test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
> - test ! -s conftest.err
> - }; then :
> - ac_retval=0
> -else
> - $as_echo "$as_me: failed program was:" >&5
> -sed 's/^/| /' conftest.$ac_ext >&5
> -
> - ac_retval=1
> -fi
> - eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
> - as_fn_set_status $ac_retval
> -
> -} # ac_fn_c_try_cpp
> -
> # ac_fn_c_check_header_preproc LINENO HEADER VAR
> # ----------------------------------------------
> # Tests whether HEADER is present, setting the cache variable VAR accordingly.
> diff --git a/sysdeps/mach/configure.ac b/sysdeps/mach/configure.ac
> index cadecae88401..61b00d66b109 100644
> --- a/sysdeps/mach/configure.ac
> +++ b/sysdeps/mach/configure.ac
> @@ -25,8 +25,8 @@ dnl If not, compile with -Dfoo_t=bar_t.
> dnl
> AC_DEFUN([mach_TYPE_CHECK], [dnl
> AC_CACHE_CHECK(for $1 in mach/mach_types.h, libc_cv_mach_$1,
> -AC_TRY_COMPILE([#include <mach/mach_types.h>], [extern $1 foo;],
> -libc_cv_mach_$1=$1, libc_cv_mach_$1=$2))
> +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <mach/mach_types.h>]], [[extern $1 foo;]])],
> +[libc_cv_mach_$1=$1], [libc_cv_mach_$1=$2]))
> if test [$]libc_cv_mach_$1 != $1; then
> DEFINES="$DEFINES -D$1=$2"
> fi])
Ok.
> @@ -42,10 +42,10 @@ dnl The creation_time field is a GNU Mach addition the other variants lack.
> dnl
> AC_CACHE_CHECK(for creation_time in task_basic_info,
> libc_cv_mach_task_creation_time, [dnl
> -AC_TRY_COMPILE([#include <mach/task_info.h>], [
> +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <mach/task_info.h>]], [[
> extern struct task_basic_info *i;
> long s = i->creation_time.seconds;
> -], libc_cv_mach_task_creation_time=yes, libc_cv_mach_task_creation_time=no)])
> +]])], [libc_cv_mach_task_creation_time=yes], [libc_cv_mach_task_creation_time=no])])
> if test $libc_cv_mach_task_creation_time = no; then
> AC_MSG_ERROR([you need Mach headers supporting task_info.creation_time])
> fi
Ok.
> diff --git a/sysdeps/mach/hurd/configure b/sysdeps/mach/hurd/configure
> index 4876e1f17600..8d0702ad438d 100644
> --- a/sysdeps/mach/hurd/configure
> +++ b/sysdeps/mach/hurd/configure
> @@ -9,6 +9,7 @@ if test -n "$sysheaders"; then
> fi
>
>
> +
> { $as_echo "$as_me:${as_lineno-$LINENO}: checking Hurd header version" >&5
> $as_echo_n "checking Hurd header version... " >&6; }
> if ${libc_cv_hurd_version+:} false; then :
> @@ -29,12 +30,12 @@ main ()
> return 0;
> }
> _ACEOF
> -if ac_fn_c_try_compile "$LINENO"; then :
> +if ac_fn_c_try_cpp "$LINENO"; then :
> libc_cv_hurd_version=ok
> else
> libc_cv_hurd_version=bad
> fi
> -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +rm -f conftest.err conftest.i conftest.$ac_ext
> fi
> { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_hurd_version" >&5
> $as_echo "$libc_cv_hurd_version" >&6; }
> diff --git a/sysdeps/mach/hurd/configure.ac b/sysdeps/mach/hurd/configure.ac
> index 9a049b1d86de..82d085af3370 100644
> --- a/sysdeps/mach/hurd/configure.ac
> +++ b/sysdeps/mach/hurd/configure.ac
> @@ -11,14 +11,14 @@ if test -n "$sysheaders"; then
> fi
>
> AC_CACHE_CHECK(Hurd header version, libc_cv_hurd_version, [dnl
> -AC_TRY_COMPILE(dnl
> -[#include <hurd/version.h>], [
> +AC_PREPROC_IFELSE([AC_LANG_PROGRAM(dnl
> +[[#include <hurd/version.h>]], [[
> #define NEED_VERSION 20020609
> #if HURD_INTERFACE_VERSION < NEED_VERSION
> # error Hurd version too old: HURD_INTERFACE_VERSION < NEED_VERSION
> -#endif],
> - libc_cv_hurd_version=ok,
> - libc_cv_hurd_version=bad)])
> +#endif]])],
> + [libc_cv_hurd_version=ok],
> + [libc_cv_hurd_version=bad])])
> if test "x$libc_cv_hurd_version" != xok; then
> AC_MSG_ERROR(Hurd headers not installed or too old)
> fi
Ok.
> diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure
> index 7eaefbabcfeb..431088acadfd 100644
> --- a/sysdeps/s390/configure
> +++ b/sysdeps/s390/configure
> @@ -301,6 +301,7 @@ then
> fi
>
>
> +
> { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC is sufficient to build libc on s390x" >&5
> $as_echo_n "checking if $CC is sufficient to build libc on s390x... " >&6; }
> if ${libc_cv_compiler_ok_on_s390x+:} false; then :
> @@ -322,12 +323,12 @@ main ()
> return 0;
> }
> _ACEOF
> -if ac_fn_c_try_compile "$LINENO"; then :
> +if ac_fn_c_try_cpp "$LINENO"; then :
> libc_cv_compiler_ok_on_s390x=yes
> else
> libc_cv_compiler_ok_on_s390x=no
> fi
> -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +rm -f conftest.err conftest.i conftest.$ac_ext
> fi
> { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_compiler_ok_on_s390x" >&5
> $as_echo "$libc_cv_compiler_ok_on_s390x" >&6; }
> diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac
> index e6df62491907..14948c81eddf 100644
> --- a/sysdeps/s390/configure.ac
> +++ b/sysdeps/s390/configure.ac
> @@ -222,11 +222,11 @@ dnl overflow
> dnl (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98269)
> AC_CACHE_CHECK([if $CC is sufficient to build libc on s390x],
> libc_cv_compiler_ok_on_s390x, [
> -AC_TRY_COMPILE([], [
> +AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[]], [[
> #if !defined __GNUC__ || __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 1)
> #error insufficient compiler for building on s390x
> #endif
> -],
> +]])],
> [libc_cv_compiler_ok_on_s390x=yes],
> [libc_cv_compiler_ok_on_s390x=no])])
> if test "$libc_cv_compiler_ok_on_s390x" != yes; then
Ok.
> diff --git a/sysdeps/unix/sysv/linux/configure b/sysdeps/unix/sysv/linux/configure
> index cace758c01e4..4ff02c9b6d02 100644
> --- a/sysdeps/unix/sysv/linux/configure
> +++ b/sysdeps/unix/sysv/linux/configure
> @@ -6,6 +6,7 @@ if test -n "$sysheaders"; then
> CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
> fi
>
> +
> { $as_echo "$as_me:${as_lineno-$LINENO}: checking installed Linux kernel header files" >&5
> $as_echo_n "checking installed Linux kernel header files... " >&6; }
> if ${libc_cv_linux320+:} false; then :
> @@ -25,12 +26,12 @@ main ()
> return 0;
> }
> _ACEOF
> -if ac_fn_c_try_compile "$LINENO"; then :
> +if ac_fn_c_try_cpp "$LINENO"; then :
> libc_cv_linux320='3.2.0 or later'
> else
> libc_cv_linux320='missing or too old!'
> fi
> -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +rm -f conftest.err conftest.i conftest.$ac_ext
> fi
> { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_linux320" >&5
> $as_echo "$libc_cv_linux320" >&6; }
> @@ -84,12 +85,12 @@ main ()
> return 0;
> }
> _ACEOF
> -if ac_fn_c_try_compile "$LINENO"; then :
> +if ac_fn_c_try_cpp "$LINENO"; then :
> libc_minimum_kernel=ok
> else
> libc_minimum_kernel='too old!'
> fi
> -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> +rm -f conftest.err conftest.i conftest.$ac_ext
> { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_minimum_kernel" >&5
> $as_echo "$libc_minimum_kernel" >&6; }
> if test "$libc_minimum_kernel" = ok; then
> diff --git a/sysdeps/unix/sysv/linux/configure.ac b/sysdeps/unix/sysv/linux/configure.ac
> index 13abda0a5148..197b7e66c8fe 100644
> --- a/sysdeps/unix/sysv/linux/configure.ac
> +++ b/sysdeps/unix/sysv/linux/configure.ac
> @@ -8,12 +8,12 @@ if test -n "$sysheaders"; then
> fi
> define([libc_cv_linuxVER], [libc_cv_linux]patsubst(LIBC_LINUX_VERSION,[\.]))dnl
> AC_CACHE_CHECK(installed Linux kernel header files, libc_cv_linuxVER, [dnl
> -AC_TRY_COMPILE([#include <linux/version.h>
> +AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[#include <linux/version.h>
> #if !defined LINUX_VERSION_CODE || LINUX_VERSION_CODE < ]dnl
> patsubst(LIBC_LINUX_VERSION,[^\([^.]*\)\.\([^.]*\)\.\([^.]*\)$],dnl
> [ (\1 *65536+ \2 *256+ \3) /* \1.\2.\3 */])[
> # error kernel headers missing or too old
> -#endif], [],
> +#endif]], [[]])],
> [libc_cv_linuxVER='LIBC_LINUX_VERSION or later'],
> [libc_cv_linuxVER='missing or too old!'])])
> if test "$libc_cv_linuxVER" != 'LIBC_LINUX_VERSION or later'; then
Ok.
> @@ -52,10 +52,10 @@ changequote(,)dnl
> decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`;
> abinum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1,\2,\3/'`;
> changequote([,])dnl
> -AC_TRY_COMPILE([#include <linux/version.h>
> +AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[#include <linux/version.h>
> #if LINUX_VERSION_CODE < $decnum
> # error kernel headers too old
> -#endif], [], [libc_minimum_kernel=ok], [libc_minimum_kernel='too old!'])
> +#endif]], [[]])], [libc_minimum_kernel=ok], [libc_minimum_kernel='too old!'])
> AC_MSG_RESULT($libc_minimum_kernel)
> if test "$libc_minimum_kernel" = ok; then
> AC_DEFINE_UNQUOTED(__LINUX_KERNEL_VERSION, $decnum)
Ok.
> diff --git a/sysdeps/unix/sysv/linux/powerpc/configure.ac b/sysdeps/unix/sysv/linux/powerpc/configure.ac
> index b8e5f9ac3263..598e44ab71f7 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/configure.ac
> +++ b/sysdeps/unix/sysv/linux/powerpc/configure.ac
> @@ -6,11 +6,11 @@ AC_CACHE_CHECK(whether $CC $CFLAGS -mlong-double-128 uses IBM extended format,
> libc_cv_mlong_double_128ibm, [dnl
> save_CFLAGS="$CFLAGS"
> CFLAGS="$CFLAGS -mlong-double-128"
> -AC_TRY_COMPILE([#include <float.h>], [
> +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <float.h>]], [[
> #if LDBL_MANT_DIG != 106
> # error "compiler doesn't implement IBM extended format of long double"
> #endif
> -long double foobar (long double x) { return x; }],
> +long double foobar (long double x) { return x; }]])],
> libc_cv_mlong_double_128ibm=yes,
> libc_cv_mlong_double_128ibm=no)
> CFLAGS="$save_CFLAGS"])
Ok.
> @@ -20,11 +20,11 @@ if test "$libc_cv_mlong_double_128ibm" = no; then
> libc_cv_mabi_ibmlongdouble, [dnl
> save_CFLAGS="$CFLAGS"
> CFLAGS="$CFLAGS -mlong-double-128 -mabi=ibmlongdouble"
> - AC_TRY_COMPILE([#include <float.h>], [
> + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <float.h>]], [[
> #if LDBL_MANT_DIG != 106
> # error "compiler doesn't implement IBM extended format of long double"
> #endif
> -long double foobar (long double x) { return x; }],
> +long double foobar (long double x) { return x; }]])],
> libc_cv_mabi_ibmlongdouble=yes,
> libc_cv_mabi_ibmlongdouble=no)
> CFLAGS="$save_CFLAGS"])
>
Ok.
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