135 lines
2.9 KiB
Diff
135 lines
2.9 KiB
Diff
From 8c19cea5e667f325ececdc1678bfddf063af0da2 Mon Sep 17 00:00:00 2001
|
|
From: Samuel Martin <s.martin49@gmail.com>
|
|
Date: Sun, 1 Jun 2014 16:05:04 +0200
|
|
Subject: [PATCH 5/5] auto/unix: make sys_nerr guessing cross-friendly
|
|
|
|
This patch replaces the default sys_nerr runtest with a test done at
|
|
buildtime.
|
|
|
|
The idea behind this buildtime test is finding the value of the ERR_MAX
|
|
macro if defined, or the EHWPOISON (which is currently the last errno)
|
|
otherwise.
|
|
|
|
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
|
|
---
|
|
auto/os/sys_nerr | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
auto/unix | 10 ++++++++
|
|
2 files changed, 87 insertions(+)
|
|
create mode 100644 auto/os/sys_nerr
|
|
|
|
diff --git a/auto/os/sys_nerr b/auto/os/sys_nerr
|
|
new file mode 100644
|
|
index 0000000..25e7c22
|
|
--- /dev/null
|
|
+++ b/auto/os/sys_nerr
|
|
@@ -0,0 +1,78 @@
|
|
+
|
|
+# Copyright (C) Samuel Martin <s.martin49@gmail.com>
|
|
+
|
|
+
|
|
+echo $ngx_n "checking for sys_nerr value...$ngx_c"
|
|
+
|
|
+# sys_nerr guessing is done using a (very) poor (but working)
|
|
+# heuristics, by checking for the value of ERR_MAX if defined, or
|
|
+# EHWPOISON otherwise.
|
|
+
|
|
+cat << END >> $NGX_AUTOCONF_ERR
|
|
+
|
|
+----------------------------------------
|
|
+checking for sys_nerr value
|
|
+
|
|
+END
|
|
+
|
|
+ngx_sys_nerr=
|
|
+
|
|
+cat << _EOF > $NGX_AUTOTEST.c
|
|
+
|
|
+#include <stdio.h>
|
|
+#include <errno.h>
|
|
+
|
|
+static char sys_nerr_test[ERR_MAX];
|
|
+int main(void)
|
|
+{
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+_EOF
|
|
+
|
|
+if $CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
|
|
+ $NGX_AUTOTEST.c -o $NGX_AUTOTEST \
|
|
+ $NGX_LD_OPT $ngx_feature_libs >/dev/null 2>&1 ; then
|
|
+ _ngx_max_err_macro=ERR_MAX
|
|
+else
|
|
+ # the +2 has been empirically found!
|
|
+ _ngx_max_err_macro="EHWPOISON + 2"
|
|
+fi
|
|
+
|
|
+cat << _EOF > $NGX_AUTOTEST.c
|
|
+
|
|
+#include <stdio.h>
|
|
+#include <errno.h>
|
|
+
|
|
+static char sys_nerr_test[(TEST_ERR_MAX == $_ngx_max_err_macro) ? 1 : -1];
|
|
+int main(void)
|
|
+{
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+_EOF
|
|
+
|
|
+
|
|
+ngx_sys_nerr=`for i in $(seq 0 2000) ; do \
|
|
+ $CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
|
|
+ -DTEST_ERR_MAX="$i" \
|
|
+ $NGX_AUTOTEST.c -o $NGX_AUTOTEST \
|
|
+ $NGX_LD_OPT $ngx_feature_libs >/dev/null 2>&1 || continue ;\
|
|
+ echo $i ; break ; done`
|
|
+
|
|
+rm -rf $NGX_AUTOTEST*
|
|
+
|
|
+if test -z $ngx_sys_nerr ; then
|
|
+ ngx_size=0
|
|
+ ngx_sys_nerr=0
|
|
+fi
|
|
+
|
|
+cat << END >> $NGX_AUTO_CONFIG_H
|
|
+
|
|
+#ifndef $ngx_feature_name
|
|
+#define $ngx_feature_name $ngx_sys_nerr
|
|
+#endif
|
|
+
|
|
+END
|
|
+
|
|
+echo " $ngx_sys_nerr"
|
|
diff --git a/auto/unix b/auto/unix
|
|
index b7cc9cb..1a49ba3 100755
|
|
--- a/auto/unix
|
|
+++ b/auto/unix
|
|
@@ -550,6 +550,10 @@ ngx_feature_incs='#include <errno.h>
|
|
#include <stdio.h>'
|
|
ngx_feature_path=
|
|
ngx_feature_libs=
|
|
+
|
|
+if false ; then
|
|
+# Disabled because only valid for native build.
|
|
+
|
|
ngx_feature_test='printf("%d", sys_nerr);'
|
|
. auto/feature
|
|
|
|
@@ -598,6 +602,12 @@ if [ $ngx_found = no ]; then
|
|
. auto/feature
|
|
fi
|
|
|
|
+else
|
|
+ # Cross-compilation support
|
|
+ . auto/os/sys_nerr
|
|
+
|
|
+fi
|
|
+
|
|
|
|
ngx_feature="localtime_r()"
|
|
ngx_feature_name="NGX_HAVE_LOCALTIME_R"
|
|
--
|
|
1.9.2
|
|
|