[vlc-devel] commit: AC_C_BIGENDIAN works nowadays ( Rémi Denis-Courmont )

git version control git at videolan.org
Mon May 26 20:55:29 CEST 2008


vlc | branch: master | Rémi Denis-Courmont <rem at videolan.org> | Mon May 26 21:37:27 2008 +0300| [2025f093ca1737dd96014d92708fc83fde2e0938]

AC_C_BIGENDIAN works nowadays

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=2025f093ca1737dd96014d92708fc83fde2e0938
---

 configure.ac |   58 ++--------------------------------------------------------
 1 files changed, 2 insertions(+), 56 deletions(-)

diff --git a/configure.ac b/configure.ac
index b0adb3d..2e451f1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5595,63 +5595,9 @@ then
 fi
 
 dnl
-dnl  Endianness check, AC_C_BIGENDIAN doesn't work if we are cross-compiling
+dnl  Endianness check
 dnl
-dnl  We give the user the opportunity to specify
-dnl  --with-words=big or --with-words=little ; otherwise, try to guess
-dnl
-AC_ARG_WITH(words,
-  [    --with-words=endianness set endianness (big or little)])
-  case "${with_words}" in
-    big)
-      ac_cv_c_bigendian=yes
-      ;;
-    little)
-      ac_cv_c_bigendian=no
-      ;;
-    *)
-      dnl  Try to guess endianness by matching patterns on a compiled
-      dnl  binary, by looking for an ASCII or EBCDIC string
-      AC_CACHE_CHECK([whether the byte order is big-endian],
-        [ac_cv_c_bigendian],
-        [ac_cv_c_bigendian="unknown"
-        [cat >conftest.c <<EOF
-        short am[] = { 0x4249, 0x4765, 0x6e44, 0x6961, 0x6e53, 0x7953, 0 };
-        short ai[] = { 0x694c, 0x5454, 0x656c, 0x6e45, 0x6944, 0x6e61, 0 };
-        void _a(void) { char*s = (char*)am; s = (char *)ai; }
-        short ei[] = { 0x89D3, 0xe3e3, 0x8593, 0x95c5, 0x89c4, 0x9581, 0 };
-        short em[] = { 0xc2c9, 0xc785, 0x95c4, 0x8981, 0x95e2, 0xa8e2, 0 };
-        void _e(void) { char*s = (char*)em; s = (char*)ei; }
-        int main(void) { _a(); _e(); return 0; }
-EOF
-        ]
-        if test -f conftest.c
-        then
-          if ${CC-cc} -c conftest.c -o conftest.o >>config.log 2>&1 \
-              && test -f conftest.o
-          then
-            if test "`strings conftest.o | grep BIGenDianSyS`"
-            then
-              ac_cv_c_bigendian="yes"
-            fi
-            if test "`strings conftest.o | grep LiTTleEnDian`"
-            then
-              ac_cv_c_bigendian="no"
-            fi
-          fi
-        fi
-      ])
-      if test "${ac_cv_c_bigendian}" = "unknown"
-      then
-        AC_MSG_ERROR([Could not guess endianness, please use --with-words])
-      fi
-      ;;
-  esac
-dnl  Now we know what to use for endianness, just put it in the header
-if test "${ac_cv_c_bigendian}" = "yes"
-then
-  AC_DEFINE(WORDS_BIGENDIAN, 1, big endian system)
-fi
+AC_C_BIGENDIAN
 
 dnl
 dnl  DLL loader copied from MPlayer copied from somewhere else (WINE ?)




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