Instead of figuring out kernel versions that have compiler.h and not... let's just use autoconf to check for it's presence. (issue #10174 reported by francesco_r)

git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.4@74572 f38db490-d61c-443f-a65b-d21fe96a405b

4 files changed, 151 insertions, 11 deletions

diff --git a/channels/chan_phone.c b/channels/chan_phone.c
index 2e6d89bc2..ae2b8aba2 100644
--- a/channels/chan_phone.c
+++ b/channels/chan_phone.c
@@ -45,6 +45,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include <fcntl.h>
 #include <sys/ioctl.h>
 #include <signal.h>
+#ifdef HAVE_LINUX_COMPILER_H
+#include <linux/compiler.h>
+#endif
 #include <linux/telephony.h>
 /* Still use some IXJ specific stuff */
 #include <linux/version.h>
diff --git a/configure b/configure
index e361adc22..a2d95873d 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 74211 .
+# From configure.ac Revision: 74374 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61.
 #
@@ -11849,13 +11849,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/types.h> /* for off_t */
-     #include <stdio.h>
+#include <stdio.h>
 int
 main ()
 {
-int (*fp) (FILE *, off_t, int) = fseeko;
-     return fseeko (stdin, 0, 0) && fp (stdin, 0, 0);
+return fseeko (stdin, 0, 0) && (fseeko) (stdin, 0, 0);
   ;
   return 0;
 }
@@ -11895,13 +11893,11 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #define _LARGEFILE_SOURCE 1
-#include <sys/types.h> /* for off_t */
-     #include <stdio.h>
+#include <stdio.h>
 int
 main ()
 {
-int (*fp) (FILE *, off_t, int) = fseeko;
-     return fseeko (stdin, 0, 0) && fp (stdin, 0, 0);
+return fseeko (stdin, 0, 0) && (fseeko) (stdin, 0, 0);
   ;
   return 0;
 }
@@ -31967,6 +31963,141 @@ fi
 
 
 
+if test "${ac_cv_header_linux_compiler_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for linux/compiler.h" >&5
+echo $ECHO_N "checking for linux/compiler.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_linux_compiler_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_linux_compiler_h" >&5
+echo "${ECHO_T}$ac_cv_header_linux_compiler_h" >&6; }
+else
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking linux/compiler.h usability" >&5
+echo $ECHO_N "checking linux/compiler.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <linux/compiler.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking linux/compiler.h presence" >&5
+echo $ECHO_N "checking linux/compiler.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <linux/compiler.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: linux/compiler.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: linux/compiler.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: linux/compiler.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: linux/compiler.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: linux/compiler.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: linux/compiler.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: linux/compiler.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: linux/compiler.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: linux/compiler.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for linux/compiler.h" >&5
+echo $ECHO_N "checking for linux/compiler.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_linux_compiler_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_linux_compiler_h=$ac_header_preproc
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_linux_compiler_h" >&5
+echo "${ECHO_T}$ac_cv_header_linux_compiler_h" >&6; }
+
+fi
+if test $ac_cv_header_linux_compiler_h = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LINUX_COMPILER_H 1
+_ACEOF
+
+fi
+
+
+
 { echo "$as_me:$LINENO: checking for linux/ixjuser.h" >&5
 echo $ECHO_N "checking for linux/ixjuser.h... $ECHO_C" >&6; }
 if test "${ac_cv_header_linux_ixjuser_h+set}" = set; then
@@ -31980,7 +32111,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
 				   #include <linux/version.h>
-				   #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+				   #ifdef HAVE_LINUX_COMPILER_H
 				   #include <linux/compiler.h>
 				   #endif
 
diff --git a/configure.ac b/configure.ac
index 6100042e9..ec0ec155e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1116,9 +1116,12 @@ AC_SUBST(EDITLINE_LIB)
 AC_CHECK_HEADER([h323.h], [PBX_H323=1], [PBX_H323=0])
 AC_SUBST(PBX_H323)
 
+AC_CHECK_HEADER([linux/compiler.h],
+                [AC_DEFINE_UNQUOTED([HAVE_LINUX_COMPILER_H], 1, [Define to 1 if your system has linux/compiler.h.])])
+
 AC_CHECK_HEADER([linux/ixjuser.h], [PBX_IXJUSER=1], [PBX_IXJUSER=0], [
 				   #include <linux/version.h>
-				   #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+				   #ifdef HAVE_LINUX_COMPILER_H
 				   #include <linux/compiler.h>
 				   #endif
 				   ])
diff --git a/include/asterisk/autoconfig.h.in b/include/asterisk/autoconfig.h.in
index 1f48bd915..f83a1d2b1 100644
--- a/include/asterisk/autoconfig.h.in
+++ b/include/asterisk/autoconfig.h.in
@@ -175,6 +175,9 @@
 /* Define to 1 if you have the <limits.h> header file. */
 #undef HAVE_LIMITS_H
 
+/* Define to 1 if your system has linux/compiler.h. */
+#undef HAVE_LINUX_COMPILER_H
+
 /* Define to 1 if you have the <locale.h> header file. */
 #undef HAVE_LOCALE_H