* tests/semantics.at (AC_C_BIGENDIAN): New test.

diff --git a/ChangeLog b/ChangeLog
index 1ba765d861c03e66d2e256b1444b4e98dc9ece6b..8f102ab4d834fb993c9d63406a59ac4590a9c08e 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2001-08-12  Alexandre Duret-Lutz  <duret_g@epita.fr>
+
+       * tests/semantics.at (AC_C_BIGENDIAN): New test.
+
 2001-08-11  Alexandre Duret-Lutz  <duret_g@epita.fr>
 
        * lib/autoconf/c.m4 (AC_C_BIGENDIAN): Handle ACTION-IF-TRUE,

diff --git a/tests/semantics.at b/tests/semantics.at
index ed48804f2d368fca345bb74e5eb67acf0f61fea4..c799cffc94afa011e5144a87a27d2f4a7267058d 100644 (file)
--- a/tests/semantics.at
+++ b/tests/semantics.at
@@ -307,6 +307,45 @@ AT_CHECK_CONFIGURE
 
 AT_CLEANUP(path)
 
+# -------------- #
+# AC_C_BIGENDIAN #
+# -------------- #
+
+AT_SETUP(AC_C_BIGENDIAN)
+
+# Make sure that AC_C_BIGENDIAN behave the same whether we are
+# cross-compiling or not.  Actually, the tests are differents in both
+# case, and the cross-compiling case is allowed to fail (BTW, it might
+# be interesting to replace [:] by [touch at-uendian] to cach systems for
+# which AC_C_BIGENDIAN does fail, just to know if such a system
+# exists.)
+
+# The following is an manually-expansed call to _AT_CHECK_AC_MACRO
+# with the call to AC_CHECK_ENV removed.  We don't want AC_CHECK_ENV
+# because we are creating a new file (at-bendian or at-lendian)
+# as a side effect of AT_CHECK_CONFIGURE.
+AT_CONFIGURE_AC([AC_C_BIGENDIAN([touch at-bendian],[touch at-lendian],[:])])
+AT_CHECK_AUTOCONF
+AT_CHECK_AUTOHEADER
+AT_CHECK_CONFIGURE
+
+rm -f config.hin  # So that next run of autoheader is quiet.
+# The last run of AC_CHECK_CONFIGURE has created at-bendian or at-lendian.
+# Now we'll perform the same in cross-compiling mode, and make sure
+# that no new file is created (if a new file is created it means
+# AC_C_BIGENDIAN computed a different result).  Checking for a new
+# file is done using AC_CHECK_ENV which is called by _AT_CHECK_AC_MACRO.
+_AT_CHECK_AC_MACRO(
+  [cross_compiling=yes
+   AC_C_BIGENDIAN([touch at-bendian],[touch at-lendian],[:])])
+
+
+# Make sure AC_C_BIGENDIAN with no argument will define WORDS_BIGENDIAN
+AT_CONFIGURE_AC([AC_C_BIGENDIAN])
+AT_CHECK_AUTOHEADER
+AT_CHECK([grep WORDS_BIGENDIAN config.hin], [], [ignore])
+
+AT_CLEANUP(at-bendian at-lendian)
 
 # ------------------------------ #
 # AC_PATH_PROG & AC_PATH_PROGS.  #