diff options
Diffstat (limited to 'm4/dpkg-headers.m4')
| -rw-r--r-- | m4/dpkg-headers.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/m4/dpkg-headers.m4 b/m4/dpkg-headers.m4 new file mode 100644 index 0000000..a95c65f --- /dev/null +++ b/m4/dpkg-headers.m4 @@ -0,0 +1,32 @@ +# serial 1 +# Copyright © 2023 Guillem Jover <guillem@debian.org> + +# DPKG_CHECK_HEADER_SYS_PROCFS +# ---------------------------- +# Check for the <sys/procfs.h> header. +AC_DEFUN([DPKG_CHECK_HEADER_SYS_PROCFS], [ + # On at least Solaris <= 11.3 we cannot use the new structured procfs API + # while also using LFS, so we need to check whether including <sys/procfs.h> + # is usable, and otherwise undefine _FILE_OFFSET_BITS, but only for the + # code using this (that is s-s-d). + dpkg_structured_procfs_supports_lfs=1 + AC_CHECK_HEADERS([sys/procfs.h], [], [ + # We need to reset the cached value, otherwise we will not be able to + # check it again. + AS_UNSET([ac_cv_header_sys_procfs_h]) + # If a bare include failed, check whether we need to disable LFS to be + # able to use structured procfs. + AC_CHECK_HEADERS([sys/procfs.h], [ + dpkg_structured_procfs_supports_lfs=0 + ], [], [[ +#undef _FILE_OFFSET_BITS +#define _STRUCTURED_PROC 1 + ]]) + ], [[ +#define _STRUCTURED_PROC 1 + ]]) + + AC_DEFINE_UNQUOTED([DPKG_STRUCTURED_PROCFS_SUPPORTS_LFS], + [$dpkg_structured_procfs_supports_lfs], + [Whether structured procfs supports LFS]) +])# DPKG_CHECK_HEADER_SYS_PROCFS |