Use autoconf logic to determine byte swapping macro presence. This should now also use other macros if present.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@76523 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2025-10-12 15:45:18 +00:00 · 2007-07-23 13:46:57 +00:00
parent ed1775bd10
commit 91c3d90e8f
4 changed files with 292 additions and 5 deletions
--- a/channels/chan_skinny.c
+++ b/channels/chan_skinny.c
@@ -110,7 +110,25 @@ static char version_id[16] = "P002F202";
 #define htolel(x) (x)
 #define htoles(x) (x)
 #else
-#if defined(SOLARIS) || defined(__Darwin__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#ifdef HAVE_BYTESWAP_H
+#include <byteswap.h>
+#define letohl(x) bswap_32(x)
+#define letohs(x) bswap_16(x)
+#define htolel(x) bswap_32(x)
+#define htoles(x) bswap_16(x)
+#elif HAVE_SYS_ENDIAN_SWAP16
+#include <sys/endian.h>
+#define letohl(x) __swap32(x)
+#define letohs(x) __swap16(x)
+#define htolel(x) __swap32(x)
+#define htoles(x) __swap16(x)
+#elif HAVE_SYS_ENDIAN_BSWAP16
+#include <sys/endian.h>
+#define letohl(x) bswap32(x)
+#define letohs(x) bswap16(x)
+#define htolel(x) bswap32(x)
+#define htoles(x) bswap16(x)
+#else
 #define __bswap_16(x) \
 	((((x) & 0xff00) >> 8) | \
 	 (((x) & 0x00ff) << 8))
@@ -119,14 +137,12 @@ static char version_id[16] = "P002F202";
 	 (((x) & 0x00ff0000) >>  8) | \
 	 (((x) & 0x0000ff00) <<  8) | \
 	 (((x) & 0x000000ff) << 24))
-#else
-#include <bits/byteswap.h>
-#endif
 #define letohl(x) __bswap_32(x)
 #define letohs(x) __bswap_16(x)
 #define htolel(x) __bswap_32(x)
 #define htoles(x) __bswap_16(x)
 #endif
+#endif

 /*! Global jitterbuffer configuration - by default, jb is disabled */
 static struct ast_jb_conf default_jbconf =
--- a/245
+++ b/245
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 75259 .
+# From configure.ac Revision: 76296 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61.
 #
@@ -15114,6 +15114,249 @@ fi
 done


+if test "${ac_cv_header_byteswap_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for byteswap.h" >&5
+echo $ECHO_N "checking for byteswap.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_byteswap_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_byteswap_h" >&5
+echo "${ECHO_T}$ac_cv_header_byteswap_h" >&6; }
+else
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking byteswap.h usability" >&5
+echo $ECHO_N "checking byteswap.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.  */
+$ac_includes_default
+#include <byteswap.h>
+_ACEOF
+rm -f conftest.$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 byteswap.h presence" >&5
+echo $ECHO_N "checking byteswap.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 <byteswap.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:$LINENO: WARNING: byteswap.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: byteswap.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: byteswap.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: byteswap.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: byteswap.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: byteswap.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: byteswap.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: byteswap.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: byteswap.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: byteswap.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: byteswap.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: byteswap.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: byteswap.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: byteswap.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: byteswap.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: byteswap.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for byteswap.h" >&5
+echo $ECHO_N "checking for byteswap.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_byteswap_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_byteswap_h=$ac_header_preproc
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_byteswap_h" >&5
+echo "${ECHO_T}$ac_cv_header_byteswap_h" >&6; }
+
+fi
+if test $ac_cv_header_byteswap_h = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_BYTESWAP_H 1
+_ACEOF
+
+fi
+
+
+
+{ echo "$as_me:$LINENO: checking for __swap16 variant of <sys/endian.h> byteswapping macros" >&5
+echo $ECHO_N "checking for __swap16 variant of <sys/endian.h> byteswapping macros... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/endian.h>
+int
+main ()
+{
+int a = 1; int b = __swap16(a);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($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_link") 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_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  { echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SYS_ENDIAN_SWAP16 1
+_ACEOF
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	{ echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6; }
+
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+
+{ echo "$as_me:$LINENO: checking for bswap16 variant of <sys/endian.h> byteswapping macros" >&5
+echo $ECHO_N "checking for bswap16 variant of <sys/endian.h> byteswapping macros... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/endian.h>
+int
+main ()
+{
+int a = 1; int b = bswap16(a);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($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_link") 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_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  { echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SYS_ENDIAN_BSWAP16 1
+_ACEOF
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	{ echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6; }
+
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+
 { echo "$as_me:$LINENO: checking for /dev/urandom" >&5
 echo $ECHO_N "checking for /dev/urandom... $ECHO_C" >&6; }
 if test "${ac_cv_file__dev_urandom+set}" = set; then
--- a/configure.ac
+++ b/configure.ac
@@ -286,6 +286,24 @@ AC_CHECK_FUNCS([funopen fopencookie])
 # some systems already have gethostbyname_r so we don't need to build ours in main/utils.c
 AC_CHECK_FUNCS([gethostbyname_r])

+AC_CHECK_HEADER([byteswap.h], [AC_DEFINE_UNQUOTED([HAVE_BYTESWAP_H], 1, [Define to 1 if byteswap.h macros are available.])])
+
+AC_MSG_CHECKING(for __swap16 variant of <sys/endian.h> byteswapping macros)
+AC_LINK_IFELSE(
+AC_LANG_PROGRAM([#include <sys/endian.h>], [int a = 1; int b = __swap16(a);]),
+AC_MSG_RESULT(yes)
+AC_DEFINE([HAVE_SYS_ENDIAN_SWAP16], 1, [Define to 1 if your sys/endian.h header file provides the __swap16 macro.]),
+AC_MSG_RESULT(no)
+)
+
+AC_MSG_CHECKING(for bswap16 variant of <sys/endian.h> byteswapping macros)
+AC_LINK_IFELSE(
+AC_LANG_PROGRAM([#include <sys/endian.h>], [int a = 1; int b = bswap16(a);]),
+AC_MSG_RESULT(yes)
+AC_DEFINE([HAVE_SYS_ENDIAN_BSWAP16], 1, [Define to 1 if your sys/endian.h header file provides the bswap16 macro.]),
+AC_MSG_RESULT(no)
+)
+
 AC_CHECK_FILE(/dev/urandom, AC_DEFINE([HAVE_DEV_URANDOM], 1, [Define to 1 if your system has /dev/urandom.]))

 AST_C_DEFINE_CHECK([PTHREAD_RWLOCK_INITIALIZER], [PTHREAD_RWLOCK_INITIALIZER], [pthread.h])
--- a/include/asterisk/autoconfig.h.in
+++ b/include/asterisk/autoconfig.h.in
@@ -68,6 +68,9 @@
 /* Define to indicate the ${BKTR_DESCRIP} library version */
 #undef HAVE_BKTR_VERSION

+/* Define to 1 if byteswap.h macros are available. */
+#undef HAVE_BYTESWAP_H
+
 /* Define to 1 if you have the `bzero' function. */
 #undef HAVE_BZERO

@@ -586,6 +589,13 @@
   */
 #undef HAVE_SYS_DIR_H

+/* Define to 1 if your sys/endian.h header file provides the bswap16 macro. */
+#undef HAVE_SYS_ENDIAN_BSWAP16
+
+/* Define to 1 if your sys/endian.h header file provides the __swap16 macro.
+   */
+#undef HAVE_SYS_ENDIAN_SWAP16
+
 /* Define to 1 if you have the <sys/file.h> header file. */
 #undef HAVE_SYS_FILE_H