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Wrap Zend stack limit check in AC_CACHE_CHECK (#14437)

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The php_cv_have_stack_limit cache variable enables cross-compiling edge
cases to override the check manually.
This commit is contained in:
Peter Kokot
2024-06-02 20:13:00 +02:00
committed by GitHub
parent ca55603d8a
commit 75033c01c3
1 changed files with 9 additions and 11 deletions
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20
Zend/Zend.m4
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@@ -159,9 +159,8 @@ AC_CHECK_FUNCS([sigsetjmp],,
dnl Test whether the stack grows downwards
dnl Assumes contiguous stack
AC_MSG_CHECKING(whether the stack grows downwards)
AC_RUN_IFELSE([AC_LANG_SOURCE([[
AC_CACHE_CHECK([whether the stack grows downwards], [php_cv_have_stack_limit],
[AC_RUN_IFELSE([AC_LANG_SOURCE([
#include <stdint.h>
int (*volatile f)(uintptr_t);
@@ -177,14 +176,13 @@ int main(void) {
f = stack_grows_downwards;
return f((uintptr_t)&local) ? 0 : 1;
}
]])], [
AC_DEFINE([ZEND_CHECK_STACK_LIMIT], 1, [Define if checking the stack limit is supported])
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
], [
AC_MSG_RESULT(no)
])
])],
[php_cv_have_stack_limit=yes],
[php_cv_have_stack_limit=no],
[php_cv_have_stack_limit=no])])
AS_VAR_IF([php_cv_have_stack_limit], [yes],
[AC_DEFINE([ZEND_CHECK_STACK_LIMIT], [1],
[Define to 1 if checking the stack limit is supported.])])
ZEND_CHECK_FLOAT_PRECISION
])