From: David Seifert <soap@gentoo.org>
To: gcc-patches@gcc.gnu.org
Cc: David Seifert <soap@gentoo.org>
Subject: [PATCH] configure: cache result of "sys/sdt.h" header check
Date: Mon, 14 Mar 2022 18:38:54 +0100 [thread overview]
Message-ID: <20220314173854.261485-1-soap@gentoo.org> (raw)
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.
---
gcc/configure | 20 +++++++++++++++-----
gcc/configure.ac | 16 +++++++++-------
2 files changed, 24 insertions(+), 12 deletions(-)
diff --git a/gcc/configure b/gcc/configure
index 14b19c8fe0c..1dfc5cc7344 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -31389,15 +31389,25 @@ 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
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 90cad309762..c86ce5e0a9b 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -6904,14 +6904,16 @@ 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
--
2.35.1
next reply other threads:[~2022-03-14 17:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-14 17:38 David Seifert [this message]
2022-03-24 13:26 ` David Seifert
2022-05-24 14:48 ` Eric Gallager
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