From 9d57d4353c82110c609f36f91986277343d4ee45 Mon Sep 17 00:00:00 2001
From: "Yann E. MORIN" <yann.morin.1998@free.fr>
Date: Wed, 8 Feb 2023 13:26:56 +0100
Subject: [PATCH] configure: allow overriding some tests

Some tests use AC_RUN_IFELSE, so they do not work for cross-compilation.

Allow the user to provide these results from the environment.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
---
 configure    | 6 +++---
 configure.ac | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/configure b/configure
index c18dfb2..d165962 100755
--- a/configure
+++ b/configure
@@ -4540,7 +4540,7 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking strdup macro" >&5
 $as_echo_n "checking strdup macro... " >&6; }
 if test "$cross_compiling" = yes; then :
-  ac_cv_strdup_macro=no
+  ac_cv_strdup_macro="${ac_cv_strdup_macro-no}"
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -4578,7 +4578,7 @@ $as_echo "$ac_cv_strdup_macro" >&6; }
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking strndup macro" >&5
 $as_echo_n "checking strndup macro... " >&6; }
 if test "$cross_compiling" = yes; then :
-  ac_cv_strndup_macro=no
+  ac_cv_strndup_macro="${ac_cv_strndup_macro-no}"
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -4753,7 +4753,7 @@ done
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking basic-block size" >&5
 $as_echo_n "checking basic-block size... " >&6; }
-ac_cv_page_size=0
+ac_cv_page_size="${ac_cv_page_size-0}"
 if test $ac_cv_page_size = 0; then
    if test "$cross_compiling" = yes; then :
    ac_cv_page_size=0
diff --git a/configure.ac b/configure.ac
index 9740fdc..51bdf4d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -292,7 +292,7 @@ int main() { return 1; }
 ]])],
 [ac_cv_strdup_macro=yes],
 [ac_cv_strdup_macro=no],
-[ac_cv_strdup_macro=no]
+[ac_cv_strdup_macro="${ac_cv_strdup_macro-no}"]
 )
 AC_MSG_RESULT([$ac_cv_strdup_macro])
 
@@ -316,7 +316,7 @@ int main() { return 1; }
 ]])],
 [ac_cv_strndup_macro=yes],
 [ac_cv_strndup_macro=no],
-[ac_cv_strndup_macro=no]
+[ac_cv_strndup_macro="${ac_cv_strndup_macro-no}"]
 )
 AC_MSG_RESULT([$ac_cv_strndup_macro])
 
@@ -390,7 +390,7 @@ AC_MSG_RESULT([$ac_cv_use_mmap])
 #
 AC_CHECK_FUNCS(getpagesize)
 AC_MSG_CHECKING([basic-block size])
-ac_cv_page_size=0
+ac_cv_page_size="${ac_cv_page_size-0}"
 if test $ac_cv_page_size = 0; then
    AC_RUN_IFELSE([AC_LANG_SOURCE([
 #if HAVE_UNISTD_H
-- 
2.25.1