Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.

Log message:
Add --tag=CC to libtool line.
Shouldn't be necessary, on the other hand, shouldn't hurt either.

Requested by jaimef@linbsd.org.

Log message:
Changes in 1.2.7:
- Replace use of memmove() with a simple copy for portability
- Test for existence of strerror
- Restore gzgetc_ for backward compatibility with 1.2.6
- Fix build with non-GNU make on Solaris
- Require gcc 4.0 or later on Mac OS X to use the hidden attribute
- Include unistd.h for Watcom C
- Use __WATCOMC__ instead of __WATCOM__
- Do not use the visibility attribute if NO_VIZ defined
- Improve the detection of no hidden visibility attribute
- Avoid using __int64 for gcc or solo compilation
- Cast to char * in gzprintf to avoid warnings
- Fix make_vms.com for VAX
- Don't use library or built-in byte swaps
- Simplify test and use of gcc hidden attribute
- Fix bug in gzclose_w() when gzwrite() fails to allocate memory
- Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen()
- Fix bug in test/minigzip.c for configure --solo
- Fix contrib/vstudio project link errors
- Add ability to choose the builder in make_vms.com
- Add DESTDIR support to mingw32 win32/Makefile.gcc
- Fix comments in win32/Makefile.gcc for proper usage
- Allow overriding the default install locations for cmake
- Generate and install the pkg-config file with cmake
- Build both a static and a shared version of zlib with cmake
- Include version symbols for cmake builds
- If using cmake with MSVC, add the source directory to the includes
- Remove unneeded EXTRA_CFLAGS from win32/Makefile.gcc
- Move obsolete emx makefile to old
- Allow the use of -Wundef when compiling or using zlib
- Avoid the use of the -u option with mktemp
- Improve inflate() documentation on the use of Z_FINISH
- Recognize clang as gcc
- Add gzopen_w() in Windows for wide character path names
- Rename zconf.h in CMakeLists.txt to move it out of the way
- Add source directory in CMakeLists.txt for building examples
- Look in build directory for zlib.pc in CMakeLists.txt
- Remove gzflags from zlibvc.def in vc9 and vc10
- Fix contrib/minizip compilation in the MinGW environment
- Update ./configure for Solaris, support --64
- Remove -R. from Solaris shared build (possible security issue)
- Avoid race condition for parallel make (-j) running example
- Fix type mismatch between get_crc_table() and crc_table
- Fix parsing of version with "-" in CMakeLists.txt
- Fix the path to zlib.map in CMakeLists.txt
- Force the native libtool in Mac OS X to avoid GNU libtool
- Add instructions to win32/Makefile.gcc for shared install

Log message:
Changes 1.2.6:
* gzread() can now read a file that is being written concurrently
* gzgetc() is now a macro for increased speed
* Added a 'T' option to gzopen() for transparent writing (no compression)
* Added deflatePending() to return the amount of pending output
* Allow deflateSetDictionary() and inflateSetDictionary() at any time in raw
  mode
* deflatePrime() can now insert bits in the middle of the stream
* ./configure now creates a configure.log file with all of the results
* Added a ./configure --solo option to compile zlib with no dependency on any
  libraries
* Fixed a problem with large file support macros
* Fixed a bug in contrib/puff
* Many portability improvements

Log message:
Set LICENSE.

Log message:
On at least OS X 10.4 the builtin zlib does not provide all the symbols
we need

Log message:
Tell builtin zlib for Haiku.

Log message:
Remove redundant NO_CHECKSUM and EXTRACT_ONLY definitions.

Log message:
Simply and speed up buildlink3.mk files and processing.
This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.

Log message:
Re-arrange lines to make this more likely to pass pkglint.