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Add class / device portability code. Two autoconf tests

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were added to cover the 3 possible APIs from 2.6.9 to
2.6.26.  We attempt to use the newest interfaces and if
not available fallback to the oldest.  This a rework of
some changes proposed by Ricardo for RHEL4.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@150 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo
2008-08-10 03:50:36 +00:00
parent 877a32e91e
commit 46c685d0c4
8 changed files with 103 additions and 44 deletions
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autoconf/spl-build.m4
+28
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@@ -457,3 +457,31 @@ AC_DEFUN([SPL_AC_FLS64],
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 2.6.18 API change, check whether device_create() is available.
dnl # Device_create() was introduced in 2.6.18 and depricated
dnl # class_device_create() which was fully removed in 2.6.26.
dnl #
AC_DEFUN([SPL_AC_DEVICE_CREATE], [
SPL_CHECK_SYMBOL_EXPORT(
[device_create],
[drivers/base/core.c],
[AC_DEFINE(HAVE_DEVICE_CREATE, 1,
[device_create() is available])],
[])
])
dnl #
dnl # 2.6.13 API change, check whether class_device_create() is available.
dnl # Class_device_create() was introduced in 2.6.13 and depricated
dnl # class_simple_device_add() which was fully removed in 2.6.13.
dnl #
AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [
SPL_CHECK_SYMBOL_EXPORT(
[class_device_create],
[drivers/base/class.c],
[AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1,
[class_device_create() is available])],
[])
])