| # |
| # Check if we have a pwritev2 libc call (Linux) |
| # |
| AC_DEFUN([AC_HAVE_PWRITEV2], |
| [ AC_MSG_CHECKING([for pwritev2]) |
| AC_LINK_IFELSE( |
| [ AC_LANG_PROGRAM([[ |
| #define _GNU_SOURCE |
| #include <sys/uio.h> |
| ]], [[ |
| pwritev2(0, 0, 0, 0, 0); |
| ]]) |
| ], have_pwritev2=yes |
| AC_MSG_RESULT(yes), |
| AC_MSG_RESULT(no)) |
| AC_SUBST(have_pwritev2) |
| ]) |
| |
| # |
| # Check if we have a copy_file_range system call (Linux) |
| # |
| AC_DEFUN([AC_HAVE_COPY_FILE_RANGE], |
| [ AC_MSG_CHECKING([for copy_file_range]) |
| AC_LINK_IFELSE( |
| [ AC_LANG_PROGRAM([[ |
| #define _GNU_SOURCE |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| ]], [[ |
| syscall(__NR_copy_file_range, 0, 0, 0, 0, 0, 0); |
| ]]) |
| ], have_copy_file_range=yes |
| AC_MSG_RESULT(yes), |
| AC_MSG_RESULT(no)) |
| AC_SUBST(have_copy_file_range) |
| ]) |
| |
| # |
| # Check if we need to override the system struct fsxattr with |
| # the internal definition. This /only/ happens if the system |
| # actually defines struct fsxattr /and/ the system definition |
| # is missing certain fields. |
| # |
| AC_DEFUN([AC_NEED_INTERNAL_FSXATTR], |
| [ |
| AC_CHECK_TYPE(struct fsxattr, |
| [ |
| AC_CHECK_MEMBER(struct fsxattr.fsx_cowextsize, |
| , |
| need_internal_fsxattr=yes, |
| [#include <linux/fs.h>] |
| ) |
| ],, |
| [#include <linux/fs.h>] |
| ) |
| AC_SUBST(need_internal_fsxattr) |
| ]) |
| |
| # |
| # Check if we need to override the system struct fscrypt_add_key_arg |
| # with the internal definition. This /only/ happens if the system |
| # actually defines struct fscrypt_add_key_arg /and/ the system |
| # definition is missing certain fields. |
| # |
| AC_DEFUN([AC_NEED_INTERNAL_FSCRYPT_ADD_KEY_ARG], |
| [ |
| AC_CHECK_TYPE(struct fscrypt_add_key_arg, |
| [ |
| AC_CHECK_MEMBER(struct fscrypt_add_key_arg.key_id, |
| , |
| need_internal_fscrypt_add_key_arg=yes, |
| [#include <linux/fs.h>] |
| ) |
| ],, |
| [#include <linux/fs.h>] |
| ) |
| AC_SUBST(need_internal_fscrypt_add_key_arg) |
| ]) |
| |
| # |
| # Check if we need to override the system struct fscrypt_policy_v2 |
| # with the internal definition. This /only/ happens if the system |
| # actually defines struct fscrypt_policy_v2 /and/ the system |
| # definition is missing certain fields. |
| # |
| AC_DEFUN([AC_NEED_INTERNAL_FSCRYPT_POLICY_V2], |
| [ |
| AC_CHECK_TYPE(struct fscrypt_policy_v2, |
| [ |
| AC_CHECK_MEMBER(struct fscrypt_policy_v2.log2_data_unit_size, |
| , |
| need_internal_fscrypt_policy_v2=yes, |
| [#include <linux/fs.h>] |
| ) |
| ],, |
| [#include <linux/fs.h>] |
| ) |
| AC_SUBST(need_internal_fscrypt_policy_v2) |
| ]) |
| |
| # |
| # Check if we have a FS_IOC_GETFSMAP ioctl (Linux) |
| # |
| AC_DEFUN([AC_HAVE_GETFSMAP], |
| [ AC_MSG_CHECKING([for GETFSMAP]) |
| AC_LINK_IFELSE( |
| [ AC_LANG_PROGRAM([[ |
| #define _GNU_SOURCE |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| #include <linux/fs.h> |
| #include <linux/fsmap.h> |
| ]], [[ |
| unsigned long x = FS_IOC_GETFSMAP; |
| struct fsmap_head fh; |
| ]]) |
| ], have_getfsmap=yes |
| AC_MSG_RESULT(yes), |
| AC_MSG_RESULT(no)) |
| AC_SUBST(have_getfsmap) |
| ]) |
| |
| # |
| # Check if we have MAP_SYNC defines (Linux) |
| # |
| AC_DEFUN([AC_HAVE_MAP_SYNC], |
| [ AC_MSG_CHECKING([for MAP_SYNC]) |
| AC_COMPILE_IFELSE( |
| [ AC_LANG_PROGRAM([[ |
| #include <sys/mman.h> |
| ]], [[ |
| int flags = MAP_SYNC | MAP_SHARED_VALIDATE; |
| ]]) |
| ], have_map_sync=yes |
| AC_MSG_RESULT(yes), |
| AC_MSG_RESULT(no)) |
| AC_SUBST(have_map_sync) |
| ]) |
| |
| # |
| # Check if we have a mallinfo libc call |
| # |
| AC_DEFUN([AC_HAVE_MALLINFO], |
| [ AC_MSG_CHECKING([for mallinfo ]) |
| AC_COMPILE_IFELSE( |
| [ AC_LANG_PROGRAM([[ |
| #include <malloc.h> |
| ]], [[ |
| struct mallinfo test; |
| |
| test.arena = 0; test.hblkhd = 0; test.uordblks = 0; test.fordblks = 0; |
| test = mallinfo(); |
| ]]) |
| ], have_mallinfo=yes |
| AC_MSG_RESULT(yes), |
| AC_MSG_RESULT(no)) |
| AC_SUBST(have_mallinfo) |
| ]) |
| |
| # |
| # Check if we have a mallinfo2 libc call |
| # |
| AC_DEFUN([AC_HAVE_MALLINFO2], |
| [ AC_MSG_CHECKING([for mallinfo2 ]) |
| AC_COMPILE_IFELSE( |
| [ AC_LANG_PROGRAM([[ |
| #include <malloc.h> |
| ]], [[ |
| struct mallinfo2 test; |
| |
| test.arena = 0; test.hblkhd = 0; test.uordblks = 0; test.fordblks = 0; |
| test = mallinfo2(); |
| ]]) |
| ], have_mallinfo2=yes |
| AC_MSG_RESULT(yes), |
| AC_MSG_RESULT(no)) |
| AC_SUBST(have_mallinfo2) |
| ]) |
| |
| AC_DEFUN([AC_PACKAGE_CHECK_LTO], |
| [ AC_MSG_CHECKING([if C compiler supports LTO]) |
| OLD_CFLAGS="$CFLAGS" |
| OLD_LDFLAGS="$LDFLAGS" |
| LTO_FLAGS="-flto -ffat-lto-objects" |
| CFLAGS="$CFLAGS $LTO_FLAGS" |
| LDFLAGS="$LDFLAGS $LTO_FLAGS" |
| AC_LINK_IFELSE([AC_LANG_PROGRAM([])], |
| [AC_MSG_RESULT([yes])] |
| [lto_cflags=$LTO_FLAGS] |
| [lto_ldflags=$LTO_FLAGS] |
| [AC_PATH_PROG(gcc_ar, gcc-ar,,)] |
| [AC_PATH_PROG(gcc_ranlib, gcc-ranlib,,)], |
| [AC_MSG_RESULT([no])]) |
| if test -x "$gcc_ar" && test -x "$gcc_ranlib"; then |
| have_lto=yes |
| fi |
| CFLAGS="${OLD_CFLAGS}" |
| LDFLAGS="${OLD_LDFLAGS}" |
| AC_SUBST(gcc_ar) |
| AC_SUBST(gcc_ranlib) |
| AC_SUBST(have_lto) |
| AC_SUBST(lto_cflags) |
| AC_SUBST(lto_ldflags) |
| ]) |