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From 1506d4bbf5fa2d7a3d2f8ae77914dd46b10c40ea Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@debian.org>
Date: Wed, 3 Apr 2024 11:52:04 +0100
Subject: Add Autoconf cache variables for OSSH_CHECK_*FLAG_*
This allows overriding them on configure's command line in case the
automatic checks go wrong somehow. bz#3673
Forwarded: https://bugzilla.mindrot.org/show_bug.cgi?id=3673#c3
Last-Update: 2024-04-03
Patch-Name: configure-cache-vars.patch
---
m4/openssh.m4 | 42 ++++++++++++++++++++++++------------------
1 file changed, 24 insertions(+), 18 deletions(-)
diff --git a/m4/openssh.m4 b/m4/openssh.m4
index 176a8d1c9..f420146f1 100644
--- a/m4/openssh.m4
+++ b/m4/openssh.m4
@@ -62,7 +62,8 @@ dnl Check that $CC accepts a flag 'check_flag'. If it is supported append
dnl 'define_flag' to $CFLAGS. If 'define_flag' is not specified, then append
dnl 'check_flag'.
AC_DEFUN([OSSH_CHECK_CFLAG_COMPILE], [{
- AC_MSG_CHECKING([if $CC supports compile flag $1])
+ ossh_cache_var=AS_TR_SH([ossh_cv_cflag_$1])
+ AC_CACHE_CHECK([if $CC supports compile flag $1], [$ossh_cache_var], [
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $WERROR $1"
_define_flag="$2"
@@ -71,22 +72,23 @@ AC_DEFUN([OSSH_CHECK_CFLAG_COMPILE], [{
[
if $ac_cv_path_EGREP -i "unrecognized option|warning.*ignored" conftest.err >/dev/null
then
- AC_MSG_RESULT([no])
+ eval "$ossh_cache_var=no"
CFLAGS="$saved_CFLAGS"
else
dnl If we are compiling natively, try running the program.
AC_RUN_IFELSE([OSSH_COMPILER_FLAG_TEST_PROGRAM],
- [ AC_MSG_RESULT([yes])
+ [ eval "$ossh_cache_var=yes"
CFLAGS="$saved_CFLAGS $_define_flag" ],
- [ AC_MSG_RESULT([no, fails at run time])
+ [ eval "$ossh_cache_var='no, fails at run time'"
CFLAGS="$saved_CFLAGS" ],
- [ AC_MSG_RESULT([yes])
+ [ eval "$ossh_cache_var=yes"
CFLAGS="$saved_CFLAGS $_define_flag" ],
)
fi],
- [ AC_MSG_RESULT([no])
+ [ eval "$ossh_cache_var=no"
CFLAGS="$saved_CFLAGS" ]
)
+ ])
}])
dnl OSSH_CHECK_CFLAG_LINK(check_flag[, define_flag])
@@ -94,7 +96,8 @@ dnl Check that $CC accepts a flag 'check_flag'. If it is supported append
dnl 'define_flag' to $CFLAGS. If 'define_flag' is not specified, then append
dnl 'check_flag'.
AC_DEFUN([OSSH_CHECK_CFLAG_LINK], [{
- AC_MSG_CHECKING([if $CC supports compile flag $1 and linking succeeds])
+ ossh_cache_var=AS_TR_SH([ossh_cv_cflag_$1])
+ AC_CACHE_CHECK([if $CC supports compile flag $1 and linking succeeds], [$ossh_cache_var], [
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $WERROR $1"
_define_flag="$2"
@@ -103,22 +106,23 @@ AC_DEFUN([OSSH_CHECK_CFLAG_LINK], [{
[
if $ac_cv_path_EGREP -i "unrecognized option|warning.*ignored" conftest.err >/dev/null
then
- AC_MSG_RESULT([no])
+ eval "$ossh_cache_var=no"
CFLAGS="$saved_CFLAGS"
else
dnl If we are compiling natively, try running the program.
AC_RUN_IFELSE([OSSH_COMPILER_FLAG_TEST_PROGRAM],
- [ AC_MSG_RESULT([yes])
+ [ eval "$ossh_cache_var=yes"
CFLAGS="$saved_CFLAGS $_define_flag" ],
- [ AC_MSG_RESULT([no, fails at run time])
+ [ eval "$ossh_cache_var='no, fails at run time'"
CFLAGS="$saved_CFLAGS" ],
- [ AC_MSG_RESULT([yes])
+ [ eval "$ossh_cache_var=yes"
CFLAGS="$saved_CFLAGS $_define_flag" ],
)
fi],
- [ AC_MSG_RESULT([no])
+ [ eval "$ossh_cache_var=no"
CFLAGS="$saved_CFLAGS" ]
)
+ ])
}])
dnl OSSH_CHECK_LDFLAG_LINK(check_flag[, define_flag])
@@ -126,7 +130,8 @@ dnl Check that $LD accepts a flag 'check_flag'. If it is supported append
dnl 'define_flag' to $LDFLAGS. If 'define_flag' is not specified, then append
dnl 'check_flag'.
AC_DEFUN([OSSH_CHECK_LDFLAG_LINK], [{
- AC_MSG_CHECKING([if $LD supports link flag $1])
+ ossh_cache_var=AS_TR_SH([ossh_cv_ldflag_$1])
+ AC_CACHE_CHECK([if $LD supports link flag $1], [$ossh_cache_var], [
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $WERROR $1"
_define_flag="$2"
@@ -135,22 +140,23 @@ AC_DEFUN([OSSH_CHECK_LDFLAG_LINK], [{
[
if $ac_cv_path_EGREP -i "unrecognized option|warning.*ignored" conftest.err >/dev/null
then
- AC_MSG_RESULT([no])
+ eval "$ossh_cache_var=no"
LDFLAGS="$saved_LDFLAGS"
else
dnl If we are compiling natively, try running the program.
AC_RUN_IFELSE([OSSH_COMPILER_FLAG_TEST_PROGRAM],
- [ AC_MSG_RESULT([yes])
+ [ eval "$ossh_cache_var=yes"
LDFLAGS="$saved_LDFLAGS $_define_flag" ],
- [ AC_MSG_RESULT([no, fails at run time])
+ [ eval "$ossh_cache_var='no, fails at run time'"
LDFLAGS="$saved_LDFLAGS" ],
- [ AC_MSG_RESULT([yes])
+ [ eval "$ossh_cache_var=yes"
LDFLAGS="$saved_LDFLAGS $_define_flag" ]
)
fi ],
- [ AC_MSG_RESULT([no])
+ [ eval "$ossh_cache_var=no"
LDFLAGS="$saved_LDFLAGS" ]
)
+ ])
}])
dnl OSSH_CHECK_HEADER_FOR_FIELD(field, header, symbol)
|
