From dfb25dd982b90403643c39b20232da5ee1283579 Mon Sep 17 00:00:00 2001
From: Andy Cedilnik <andy.cedilnik@kitware.com>
Date: Tue, 1 Oct 2002 15:56:18 -0400
Subject: Add test for big endian

---
 Modules/TestBigEndian.c     | 10 ++++++++++
 Modules/TestBigEndian.cmake | 16 ++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 Modules/TestBigEndian.c
 create mode 100644 Modules/TestBigEndian.cmake

diff --git a/Modules/TestBigEndian.c b/Modules/TestBigEndian.c
new file mode 100644
index 0000000..377d1b1
--- /dev/null
+++ b/Modules/TestBigEndian.c
@@ -0,0 +1,10 @@
+int main () {
+  /* Are we little or big endian?  From Harbison&Steele.  */
+  union
+  {
+    long l;
+    char c[sizeof (long)];
+  } u;
+  u.l = 1;
+  exit (u.c[sizeof (long) - 1] == 1);
+}
diff --git a/Modules/TestBigEndian.cmake b/Modules/TestBigEndian.cmake
new file mode 100644
index 0000000..c729a82
--- /dev/null
+++ b/Modules/TestBigEndian.cmake
@@ -0,0 +1,16 @@
+#
+# Check if the system is big endian or little endian
+#
+# VARIABLE - variable to store the result to
+#
+
+MACRO(TEST_BIG_ENDIAN VARIABLE)
+  TRY_RUN(${VARIABLE} HAVE_${VARIABLE}
+          ${PROJECT_BINARY_DIR}
+          ${CMAKE_ROOT}/Modules/TestBigEndian.c
+          OUTPUT_VARIABLE OUTPUT)
+  IF(NOT HAVE_${VARIABLE})
+    WRITE_FILE(${PROJECT_BINARY_DIR}/CMakeError.log 
+      "Determining the endianes of the system failed with the following output:\n${OUTPUT}\n")
+  ENDIF(NOT HAVE_${VARIABLE})
+ENDMACRO(TEST_BIG_ENDIAN)
-- 
cgit v0.12