--- configure.ac.orig	2022-08-02 13:57:03 UTC
+++ configure.ac
@@ -55,6 +55,7 @@ AH_BOTTOM([
 
 #include <string.h>
 
+#include <ext/php_config.h>
 #endif /* PHP_CONFIG_H */
 ])
 
@@ -279,7 +280,6 @@ dnl --------------------------------------------------
 
 dnl ----------------------------------------------------------------------------
 
-PTHREADS_CHECK
 PHP_HELP_SEPARATOR([SAPI modules:])
 PHP_SHLIB_SUFFIX_NAMES
 PHP_BUILD_PROGRAM
@@ -627,7 +627,7 @@ dnl Some systems (like OpenSolaris) do not have nanosl
 AX_FUNC_WHICH_GETHOSTBYNAME_R
 
 dnl Some systems (like OpenSolaris) do not have nanosleep in libc.
-PHP_CHECK_FUNC_LIB(nanosleep, rt)
+PHP_CHECK_FUNC(nanosleep, rt)
 
 dnl Haiku does not have network api in libc.
 PHP_CHECK_FUNC_LIB(setsockopt, network)
@@ -1375,7 +1375,7 @@ EXPANDED_PHP_CONFIG_FILE_SCAN_DIR=`eval echo "$PHP_CON
 EXPANDED_DATADIR=$datadir
 EXPANDED_PHP_CONFIG_FILE_PATH=`eval echo "$PHP_CONFIG_FILE_PATH"`
 EXPANDED_PHP_CONFIG_FILE_SCAN_DIR=`eval echo "$PHP_CONFIG_FILE_SCAN_DIR"`
-INCLUDE_PATH=.:$EXPANDED_PEAR_INSTALLDIR
+INCLUDE_PATH=.:${prefix}/share/pear
 
 exec_prefix=$old_exec_prefix
 libdir=$old_libdir
@@ -1600,7 +1600,7 @@ PHP_SUBST(install_binary_targets)
 PHP_SUBST(install_targets)
 PHP_SUBST(install_binary_targets)
 
-PHP_INSTALL_HEADERS([Zend/ TSRM/ include/ main/ main/streams/])
+PHP_INSTALL_HEADERS([Zend/ TSRM/ main/ main/streams/])
 PHP_INSTALL_HEADERS([Zend/Optimizer], [ \
     zend_call_graph.h \
     zend_cfg.h \