Automatically detect HAVE_INT_8_16_32.

Docs/manual.texi:
  - remove -DHAVE_INT_8_16_32 from recommended CFLAGS
configure.in:
  - add test for int8
acconfig.h:
  - add HAVE_INT_8_16_32

Docs/manual.texi

@@ -6687,8 +6687,8 @@ Automatic detection of @code{xlC} is missing from Autoconf, so a
 @strong{MySQL}: (The example uses the IBM compiler)
 
 @example
-shell> CC="xlc_r" CFLAGS="-ma -O3 -qstrict -DHAVE_INT_8_16_32" \
-       CXX="xlC_r" CXXFLAGS="-ma -O3 -qstrict -DHAVE_INT_8_16_32" \
+shell> CC="xlc_r" CFLAGS="-ma -O3 -qstrict" \
+       CXX="xlC_r" CXXFLAGS="-ma -O3 -qstrict" \
        ./configure
 @end example
 
@@ -6704,9 +6704,9 @@ handling in @code{gcc}/@code{egcs} is not thread-safe!  (This is tested with
 
 @example
 shell> CC=gcc \
-       CFLAGS="-DHAVE_INT_8_16_32" \
+       CFLAGS="" \
        CXX=gcc \
-       CXXFLAGS="-felide-constructors -fno-exceptions -fno-rtti -DHAVE_INT_8_16_32" \" \
+       CXXFLAGS="-felide-constructors -fno-exceptions -fno-rtti" \" \
        ./configure --prefix=/usr/local/mysql --with-debug --with-low-memory
 @end example
 

acconfig.h

@@ -69,6 +69,9 @@
    this with 6 arguments */
 #undef HAVE_GLIBC2_STYLE_GETHOSTBYNAME_R
 
+/* Define if int8, int16 and int32 types exist */
+#undef HAVE_INT_8_16_32
+
 /* Define if we have GNU readline */
 #undef HAVE_LIBREADLINE
 

configure.in

@@ -580,6 +580,28 @@ LIBS_AFTER_SOCKET=$LIBS
 LIBS="$LIBS_BEFORE_SOCKET $LIBS_SOCKET $LIBS_AFTER_SOCKET"
 NON_THREADED_CLIENT_LIBS="$LIBS"
 
+AC_MSG_CHECKING([for int8])
+AC_TRY_RUN([
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+int main()
+{
+  int8 i;
+  return 0;
+}
+], AC_DEFINE(HAVE_INT_8_16_32) AC_MSG_RESULT([yes]), AC_MSG_RESULT([no])
+)
+
 #
 # Some system specific hacks
 #
@@ -662,8 +684,8 @@ case $SYSTEM_TYPE in
     ;;
     *aix4.3*)
       echo "Adding defines for AIX"
-      CFLAGS="$CFLAGS -DHAVE_INT_8_16_32 -DUNDEF_HAVE_INITGROUPS"
-      CXXFLAGS="$CXXFLAGS -DHAVE_INT_8_16_32 -DUNDEF_HAVE_INITGROUPS"
+      CFLAGS="$CFLAGS -DUNDEF_HAVE_INITGROUPS"
+      CXXFLAGS="$CXXFLAGS -DUNDEF_HAVE_INITGROUPS"
     ;;
 esac