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nginx-unit/auto/modules/php
Valentin Bartenev 262578dc71 PHP: workaround for bug #71041.
Since PHP 7, a zend_signal_startup() call is required if the interpreter
was built with ZEND_SIGNALS defined; such a call was added in 3fd76e4ce70a.

However, the zend_signal_startup() export is missing from the PHP library;
as the result, dlopen() fails with the 'Undefined symbol "zend_signal_startup"'
error while loading the PHP module.

Meanwhile, if PHP is built without ZTS, the zend_signal_startup() call can
be omitted; otherwise, the missing call causes segmentation fault.

The PHP fix already was committed to upstream, but we still have to deal
with numerous unpatched versions remaining at large.

See the related PHP bug: https://bugs.php.net/bug.php?id=71041
2018-11-22 20:23:43 +03:00

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# Copyright (C) Max Romanov
# Copyright (C) Igor Sysoev
# Copyright (C) NGINX, Inc.
shift
for nxt_option; do
case "$nxt_option" in
-*=*) value=`echo "$nxt_option" | sed -e 's/[-_a-zA-Z0-9]*=//'` ;;
*) value="" ;;
esac
case "$nxt_option" in
--config=*) NXT_PHP_CONFIG="$value" ;;
--module=*) NXT_PHP_MODULE="$value" ;;
--lib-path=*) NXT_PHP_LIB_PATH="$value" ;;
--lib-static) NXT_PHP_LIB_STATIC=yes ;;
--help)
cat << END
--config=FILE set php-config filename
--module=NAME set unit php module name
--lib-path=DIRECTORY set directory path to libphp.so library
--lib-static enable linking with static libphp.a library
END
exit 0
;;
*)
echo
echo $0: error: invalid PHP option \"$nxt_option\"
echo
exit 1
;;
esac
done
if [ ! -f $NXT_AUTOCONF_DATA ]; then
echo
echo Please run common $0 before configuring module \"$nxt_module\".
echo
exit 1
fi
. $NXT_AUTOCONF_DATA
NXT_PHP_CONFIG=${NXT_PHP_CONFIG=php-config}
NXT_PHP=${NXT_PHP_CONFIG%-config*}
NXT_PHP_MODULE=${NXT_PHP_MODULE=${NXT_PHP##*/}}
NXT_PHP_LIB_PATH=${NXT_PHP_LIB_PATH=}
NXT_PHP_LIB_STATIC=${NXT_PHP_LIB_STATIC=no}
$echo "configuring PHP module"
$echo "configuring PHP module ..." >> $NXT_AUTOCONF_ERR
$echo -n "checking for PHP ..."
$echo "checking for PHP ..." >> $NXT_AUTOCONF_ERR
NXT_PHP_LDFLAGS=
if /bin/sh -c "${NXT_PHP_CONFIG} --version" >> $NXT_AUTOCONF_ERR 2>&1; then
$echo " found"
NXT_PHP_VERSION="`${NXT_PHP_CONFIG} --version`"
$echo " + PHP SAPI: [`${NXT_PHP_CONFIG} --php-sapis`]"
NXT_PHP_INCLUDE="`${NXT_PHP_CONFIG} --includes`"
if [ $NXT_PHP_LIB_STATIC = yes ]; then
if [ "$NXT_PHP_LIB_PATH" = "" ]; then
$echo
$echo $0: error: --lib-static option requires --lib-path option.
$echo
exit 1;
fi
NXT_PHP_LIB="$NXT_PHP_LIB_PATH/libphp${NXT_PHP_VERSION%%.*}.a"
NXT_PHP_LDFLAGS="`${NXT_PHP_CONFIG} --ldflags` \
`${NXT_PHP_CONFIG} --libs`"
else
NXT_PHP_LIB="-lphp${NXT_PHP_VERSION%%.*}"
if [ "$NXT_PHP_LIB_PATH" != "" ]; then
# "php-config --ldflags" does not contain path to libphp, but
# contains usually path to libraries required by extensions.
NXT_PHP_LDFLAGS="-L${NXT_PHP_LIB_PATH} \
-Wl,-rpath ${NXT_PHP_LIB_PATH}"
fi
fi
nxt_feature="PHP embed SAPI"
nxt_feature_name=""
nxt_feature_run=no
nxt_feature_incs="${NXT_PHP_INCLUDE}"
nxt_feature_libs="${NXT_PHP_LIB} ${NXT_PHP_LDFLAGS}"
nxt_feature_test="
#include <php.h>
#include <php_main.h>
int main() {
php_module_startup(NULL, NULL, 0);
return 0;
}"
. auto/feature
if [ $nxt_found = no ]; then
$echo
$echo $0: error: no PHP embed SAPI found.
$echo
exit 1;
fi
# Bug #71041 (https://bugs.php.net/bug.php?id=71041).
nxt_feature="PHP zend_signal_startup()"
nxt_feature_name=""
nxt_feature_run=no
nxt_feature_incs="${NXT_PHP_INCLUDE}"
nxt_feature_libs="${NXT_PHP_LIB} ${NXT_PHP_LDFLAGS}"
nxt_feature_test="
#include <php.h>
#include <php_main.h>
int main() {
zend_signal_startup();
return 0;
}"
. auto/feature
if [ $nxt_found = yes ]; then
NXT_ZEND_SIGNAL_STARTUP=1
else
NXT_ZEND_SIGNAL_STARTUP=0
fi
else
$echo
$echo $0: error: no PHP found.
$echo
exit 1;
fi
nxt_feature="PHP version"
nxt_feature_name=""
nxt_feature_run=value
nxt_feature_incs="${NXT_PHP_INCLUDE}"
nxt_feature_libs="${NXT_PHP_LIB} ${NXT_PHP_LDFLAGS}"
nxt_feature_test="
#include <php.h>
int main() {
printf(\"%s\", PHP_VERSION);
return 0;
}"
. auto/feature
if grep ^$NXT_PHP_MODULE: $NXT_MAKEFILE 2>&1 > /dev/null; then
$echo
$echo $0: error: duplicate \"$NXT_PHP_MODULE\" module configured.
$echo
exit 1;
fi
$echo " + PHP module: ${NXT_PHP_MODULE}.unit.so"
. auto/cc/deps
$echo >> $NXT_MAKEFILE
NXT_PHP_MODULE_SRCS=" \
src/nxt_php_sapi.c \
"
# The php module object files.
nxt_objs=$NXT_BUILD_DIR/src/nxt_unit.o
for nxt_src in $NXT_PHP_MODULE_SRCS; do
nxt_obj=${nxt_src%.c}-$NXT_PHP_MODULE.o
nxt_dep=${nxt_src%.c}-$NXT_PHP_MODULE.dep
nxt_dep_flags=`nxt_gen_dep_flags`
nxt_dep_post=`nxt_gen_dep_post`
nxt_objs="$nxt_objs $NXT_BUILD_DIR/$nxt_obj"
cat << END >> $NXT_MAKEFILE
$NXT_BUILD_DIR/$nxt_obj: $nxt_src
\$(CC) -c \$(CFLAGS) \$(NXT_INCS) $NXT_PHP_INCLUDE \\
-DNXT_ZEND_SIGNAL_STARTUP=$NXT_ZEND_SIGNAL_STARTUP \\
$nxt_dep_flags \\
-o $NXT_BUILD_DIR/$nxt_obj $nxt_src
$nxt_dep_post
-include $NXT_BUILD_DIR/$nxt_dep
END
done
cat << END >> $NXT_MAKEFILE
.PHONY: ${NXT_PHP_MODULE}
.PHONY: ${NXT_PHP_MODULE}-install
.PHONY: ${NXT_PHP_MODULE}-uninstall
all: ${NXT_PHP_MODULE}
${NXT_PHP_MODULE}: $NXT_BUILD_DIR/${NXT_PHP_MODULE}.unit.so
$NXT_BUILD_DIR/${NXT_PHP_MODULE}.unit.so: $nxt_objs
\$(NXT_MODULE_LINK) -o $NXT_BUILD_DIR/${NXT_PHP_MODULE}.unit.so \\
$nxt_objs ${NXT_PHP_LIB} ${NXT_PHP_LDFLAGS} $NXT_LD_OPT
install: ${NXT_PHP_MODULE}-install
${NXT_PHP_MODULE}-install: ${NXT_PHP_MODULE} install-check
install -d \$(DESTDIR)$NXT_MODULES
install -p $NXT_BUILD_DIR/${NXT_PHP_MODULE}.unit.so \\
\$(DESTDIR)$NXT_MODULES/
uninstall: ${NXT_PHP_MODULE}-uninstall
${NXT_PHP_MODULE}-uninstall:
rm -f \$(DESTDIR)$NXT_MODULES/${NXT_PHP_MODULE}.unit.so
@rmdir -p \$(DESTDIR)$NXT_MODULES 2>/dev/null || true
END