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Simplify UFFDIO_WRITEPROTECT_MODE_WP Autoconf check (#13564)

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AC_CHECK_DECL can check whether preprocessor macro is defined in the
given includes.
This commit is contained in:
Peter Kokot
2024-03-02 22:48:41 +01:00
committed by GitHub
parent 7f01871915
commit 734f686ac4
1 changed files with 2 additions and 8 deletions
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10
sapi/phpdbg/config.m4
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@@ -45,13 +45,7 @@ if test "$PHP_PHPDBG" != "no"; then
AC_MSG_RESULT([disabled])
fi
AC_CACHE_CHECK([for userfaultfd faulting on write-protected memory support], ac_cv_phpdbg_userfaultfd_writefault, AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <linux/userfaultfd.h>
#ifndef UFFDIO_WRITEPROTECT_MODE_WP
# error userfaults on write-protected memory not supported
#endif
]])], [ac_cv_phpdbg_userfaultfd_writefault=yes], [ac_cv_phpdbg_userfaultfd_writefault=no]))
if test "$ac_cv_phpdbg_userfaultfd_writefault" = "yes"; then
AC_CHECK_DECL([UFFDIO_WRITEPROTECT_MODE_WP], [
if test "$enable_zts" != "yes"; then
CFLAGS_SAVE="$CFLAGS"
LIBS_SAVE="$LIBS"
@@ -73,7 +67,7 @@ if test "$PHP_PHPDBG" != "no"; then
else
AC_DEFINE(HAVE_USERFAULTFD_WRITEFAULT, 1, [Whether faulting on write-protected memory support can be compiled for userfaultfd])
fi
fi
],,[#include <linux/userfaultfd.h>])
PHP_SUBST(PHPDBG_EXTRA_LIBS)