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configure: cache result of "sys/sdt.h" header check

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Use AC_CACHE_CHECK to store the result of the header check for
systemtap's "sys/sdt.h", which is similar in spirit to libstdc++'s
AC_CACHE_CHECK(..., glibcxx_cv_sys_sdt_h).

gcc/
	* configure.ac: Add AC_CACHE_CHECK(..., gcc_cv_sys_sdt_h).
	* configure: Regenerate.
This commit is contained in:
David Seifert 2022-11-01 14:27:53 -06:00 committed by Jeff Law
parent e5c15eb183
commit 4f8aac77e0
2 changed files with 24 additions and 12 deletions
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20
gcc/configure vendored
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@ -31103,15 +31103,25 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking sys/sdt.h in the target C library" >&5
$as_echo_n "checking sys/sdt.h in the target C library... " >&6; }
have_sys_sdt_h=no
if test -f $target_header_dir/sys/sdt.h; then
have_sys_sdt_h=yes
if ${gcc_cv_sys_sdt_h+:} false; then :
$as_echo_n "(cached) " >&6
else
gcc_cv_sys_sdt_h=no
if test -f $target_header_dir/sys/sdt.h; then
gcc_cv_sys_sdt_h=yes
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_sys_sdt_h" >&5
$as_echo "$gcc_cv_sys_sdt_h" >&6; }
if test x$gcc_cv_sys_sdt_h = xyes; then :
$as_echo "#define HAVE_SYS_SDT_H 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_sys_sdt_h" >&5
$as_echo "$have_sys_sdt_h" >&6; }
# Check if TFmode long double should be used by default or not.
# Some glibc targets used DFmode long double, but with glibc 2.4

16
gcc/configure.ac
View File

@ -6778,14 +6778,16 @@ AC_SUBST([enable_default_ssp])
# Test for <sys/sdt.h> on the target.
GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
AC_MSG_CHECKING(sys/sdt.h in the target C library)
have_sys_sdt_h=no
if test -f $target_header_dir/sys/sdt.h; then
have_sys_sdt_h=yes
AC_DEFINE(HAVE_SYS_SDT_H, 1,
AC_CACHE_CHECK([sys/sdt.h in the target C library], [gcc_cv_sys_sdt_h], [
gcc_cv_sys_sdt_h=no
if test -f $target_header_dir/sys/sdt.h; then
gcc_cv_sys_sdt_h=yes
fi
])
AS_IF([test x$gcc_cv_sys_sdt_h = xyes], [
AC_DEFINE([HAVE_SYS_SDT_H], [1],
[Define if your target C library provides sys/sdt.h])
fi
AC_MSG_RESULT($have_sys_sdt_h)
])
# Check if TFmode long double should be used by default or not.
# Some glibc targets used DFmode long double, but with glibc 2.4