Merge bk-internal.mysql.com:/home/bk/mysql-4.1

into mysql.com:/home/kostja/mysql/mysql-4.1-zlib


configure.in:
  Auto merged

1 files changed, 106 insertions, 22 deletions

diff --git a/acinclude.m4 b/acinclude.m4
index 0e6dab052ab..0df0eed85d7 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -167,32 +167,116 @@ then
 fi
 ])
 
-AC_DEFUN(MYSQL_CHECK_ZLIB_WITH_COMPRESS, [
+
+dnl Define zlib paths to point at bundled zlib
+
+AC_DEFUN([MYSQL_USE_BUNDLED_ZLIB], [
+ZLIB_INCLUDES="-I\$(top_srcdir)/zlib"
+ZLIB_LIBS="\$(top_builddir)/zlib/libz.la"
+zlib_dir="zlib"
+AC_SUBST([zlib_dir])
+mysql_cv_compress="yes"
+])
+
+dnl Auxilary macro to check for zlib at given path
+
+AC_DEFUN([MYSQL_CHECK_ZLIB_DIR], [
+save_INCLUDES="$INCLUDES"
 save_LIBS="$LIBS"
-LIBS="-l$1 $LIBS"
-AC_CACHE_CHECK([if libz with compress], mysql_cv_compress,
-[AC_TRY_RUN([#include <zlib.h>
-#ifdef __cplusplus
-extern "C"
-#endif
-int main(int argv, char **argc)
-{
-  return 0;
-}
+INCLUDES="$ZLIB_INCLUDES"
+LIBS="$ZLIB_LIBS"
+AC_CACHE_VAL([mysql_cv_compress],
+  [AC_TRY_LINK([#include <zlib.h>],
+    [int link_test() { return compress(0, (unsigned long*) 0, "", 0); }],
+    [mysql_cv_compress="yes"
+    AC_MSG_RESULT([ok])],
+    [mysql_cv_compress="no"])
+  ])
+INCLUDES="$save_INCLUDES"
+LIBS="$save_LIBS"
+])
 
-int link_test()
-{
-  return compress(0, (unsigned long*) 0, "", 0);
-}
-], mysql_cv_compress=yes, mysql_cv_compress=no)])
-if test "$mysql_cv_compress" = "yes"
-then
-  AC_DEFINE([HAVE_COMPRESS], [1], [ZLIB and compress])
-else
-  LIBS="$save_LIBS"
-fi
+dnl MYSQL_CHECK_ZLIB_WITH_COMPRESS
+dnl ------------------------------------------------------------------------
+dnl @synopsis MYSQL_CHECK_ZLIB_WITH_COMPRESS
+dnl
+dnl Provides the following configure options:
+dnl --with-zlib-dir=DIR
+dnl Possible DIR values are:
+dnl - "no" - the macro will disable use of compression functions
+dnl - "bundled" - means use zlib bundled along with MySQL sources
+dnl - empty, or not specified - the macro will try default system
+dnl   library (if present), and in case of error will fall back to 
+dnl   bundled zlib
+dnl - zlib location prefix - given location prefix, the macro expects
+dnl   to find the library headers in $prefix/include, and binaries in
+dnl   $prefix/lib. If zlib headers or binaries weren't found at $prefix, the
+dnl   macro bails out with error.
+dnl 
+dnl If the library was found, this function #defines HAVE_COMPRESS
+dnl and configure variables ZLIB_INCLUDES (i.e. -I/path/to/zlib/include) and
+dnl ZLIB_LIBS (i. e. -L/path/to/zlib/lib -lz).
+
+AC_DEFUN([MYSQL_CHECK_ZLIB_WITH_COMPRESS], [
+AC_MSG_CHECKING([for zlib compression library])
+case $SYSTEM_TYPE in
+dnl  This is a quick fix for Netware if AC_TRY_LINK for some reason 
+dnl  won't work there. Uncomment in case of failure and on Netware
+dnl  we'll always assume that zlib is present 
+dnl  *netware* | *modesto*)
+dnl     AC_MSG_RESULT(ok)
+dnl     AC_DEFINE([HAVE_COMPRESS], [1], [Define to enable compression support])
+dnl    ;;
+  *)
+    AC_ARG_WITH([zlib-dir],
+                AC_HELP_STRING([--with-zlib-dir=DIR],
+                               [Provide MySQL with a custom location of
+                               compression library. Given DIR, zlib binary is 
+                               assumed to be in $DIR/lib and header files
+                               in $DIR/include.]),
+                [mysql_zlib_dir=${withval}],
+                [mysql_zlib_dir=""])
+    case "$mysql_zlib_dir" in
+      "no")
+        mysql_cv_compress="no"
+        AC_MSG_RESULT([disabled])
+        ;;
+      "bundled")
+        MYSQL_USE_BUNDLED_ZLIB
+        AC_MSG_RESULT([using bundled zlib])
+        ;;
+      "")
+        ZLIB_INCLUDES=""
+        ZLIB_LIBS="-lz"
+        MYSQL_CHECK_ZLIB_DIR
+        if test "$mysql_cv_compress" = "no"; then
+          MYSQL_USE_BUNDLED_ZLIB
+          AC_MSG_RESULT([system-wide zlib not found, using one bundled with MySQL])
+        fi
+        ;;
+      *)
+        if test -f "$mysql_zlib_dir/lib/libz.a" -a \ 
+                -f "$mysql_zlib_dir/include/zlib.h"; then
+          ZLIB_INCLUDES="-I$mysql_zlib_dir/include"
+          ZLIB_LIBS="-L$mysql_zlib_dir/lib -lz"
+          MYSQL_CHECK_ZLIB_DIR
+        fi
+        if test "x$mysql_cv_compress" != "xyes"; then 
+          AC_MSG_ERROR([headers or binaries were not found in $mysql_zlib_dir/{include,lib}])
+        fi
+        ;;
+    esac
+    if test "$mysql_cv_compress" = "yes"; then
+      AC_SUBST([ZLIB_LIBS])
+      AC_SUBST([ZLIB_INCLUDES])
+      AC_DEFINE([HAVE_COMPRESS], [1], [Define to enable compression support])
+    fi
+    ;;
+esac
 ])
 
+dnl ------------------------------------------------------------------------
+
 #---START: Used in for client configure
 AC_DEFUN(MYSQL_CHECK_ULONG,
 [AC_MSG_CHECKING(for type ulong)