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# This macro #defines HAVE_ZLIB_H if required header files are7
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# found, and sets @ZLIB_LDFLAGS@ and @ZLIB_CFLAGS@ to the necessary8
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# values.9
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#10
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# This macro is distributed in the hope that it will be useful,11
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# but WITHOUT ANY WARRANTY; without even the implied warranty of12
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.13
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AC_DEFUN([ZLIB_TRY_LINK],15
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[16
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found_zlib=$116
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AC_TRY_LINK(17
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[18
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#include <zlib.h>19
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],20
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[21
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z_stream defstream;22
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deflateInit(&defstream, Z_BEST_COMPRESSION);23
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],24
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found_zlib="yes")25
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])dnl26
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AC_DEFUN([ZLIB_CHECK_CONFIG],28
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[29
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AC_ARG_WITH([zlib],[30
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If you want to specify zlib installation directories:31
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AC_HELP_STRING([--with-zlib=DIR], [use zlib from given base install directory (DIR), default is to search through a number of common places for the zlib files.])],32
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AC_HELP_STRING([--with-zlib@<:@=DIR@:>@], [use zlib from given base install directory (DIR), default is to search through a number of common places for the zlib files.])],32
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[33
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test "x$withval" = "xyes" && withval=/usr34
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ZLIB_CFLAGS="-I$withval/include"35
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ZLIB_LDFLAGS="-L$withval/lib"36
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_zlib_dir_set="yes"37
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]38
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)39
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AC_ARG_WITH([zlib-include],41
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AC_HELP_STRING([--with-zlib-include=DIR],78
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if test "x$found_zlib" = "xyes"; then80
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am_save_CFLAGS="$CFLAGS"81
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am_save_LDFLAGS="$LDFLAGS"82
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am_save_LIBS="$LIBS"83
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CFLAGS="$CFLAGS $ZLIB_CFLAGS"85
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LDFLAGS="$LDFLAGS $ZLIB_LDFLAGS"86
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LIBS="$LIBS $ZLIB_LIBS"87
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-
found_zlib="no"89
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ZLIB_TRY_LINK([no])90
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CFLAGS="$am_save_CFLAGS"92
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LDFLAGS="$am_save_LDFLAGS"93
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LIBS="$am_save_LIBS"94
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fi95
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if test "x$found_zlib" = "xyes"; then97
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AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the 'zlib' library (-lz)])98
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AC_MSG_RESULT(yes)