[ttssh2-commit] [10362] ライブラリのダウンロードを download.cmake にまとめた

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scmno****@osdn***** scmno****@osdn*****
2022年 11月 12日 (土) 23:44:41 JST


Revision: 10362
          https://osdn.net/projects/ttssh2/scm/svn/commits/10362
Author:   zmatsuo
Date:     2022-11-12 23:44:41 +0900 (Sat, 12 Nov 2022)
Log Message:
-----------
ライブラリのダウンロードを download.cmake にまとめた

- 従来、各ライブラリの cmake からダウンロードしていた
- 各ライブラリの cmake から download.cmake を使用するようにした

Modified Paths:
--------------
    trunk/libs/buildargon2.cmake
    trunk/libs/buildcjson.cmake
    trunk/libs/buildlibressl.cmake
    trunk/libs/buildoniguruma.cmake
    trunk/libs/buildputty.cmake
    trunk/libs/buildsfmt.cmake
    trunk/libs/buildzlib.cmake

-------------- next part --------------
Modified: trunk/libs/buildargon2.cmake
===================================================================
--- trunk/libs/buildargon2.cmake	2022-11-12 14:44:30 UTC (rev 10361)
+++ trunk/libs/buildargon2.cmake	2022-11-12 14:44:41 UTC (rev 10362)
@@ -1,39 +1,15 @@
 # cmake -P buildargon2.cmake
 
-set(SRC_DIR_BASE "phc-winner-argon2-20190702")
-set(SRC_ARC "20190702.tar.gz")
-set(SRC_URL "https://github.com/P-H-C/phc-winner-argon2/archive/refs/tags/20190702.tar.gz")
-set(SRC_ARC_HASH_SHA256 daf972a89577f8772602bf2eb38b6a3dd3d922bf5724d45e7f9589b5e830442c)
+set(SRC_DIR "${CMAKE_CURRENT_LIST_DIR}/argon2")
 
-set(DOWN_DIR "${CMAKE_SOURCE_DIR}/download/argon2")
-set(EXTRACT_DIR "${CMAKE_SOURCE_DIR}/build/argon2/src")
-set(SRC_DIR "${CMAKE_SOURCE_DIR}/build/argon2/src/${SRC_DIR_BASE}")
-set(INSTALL_DIR "${CMAKE_SOURCE_DIR}/argon2")
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -DTARGET=argon2 -P download.cmake
+)
 
-if(NOT EXISTS ${INSTALL_DIR}/README.md)
-
-  file(DOWNLOAD
-    ${SRC_URL}
-    ${DOWN_DIR}/${SRC_ARC}
-    EXPECTED_HASH SHA256=${SRC_ARC_HASH_SHA256}
-    SHOW_PROGRESS
-    )
-
-  file(MAKE_DIRECTORY ${EXTRACT_DIR})
-
-  execute_process(
-    COMMAND ${CMAKE_COMMAND} -E tar "xvf" ${DOWN_DIR}/${SRC_ARC}
-    WORKING_DIRECTORY ${EXTRACT_DIR}
-    )
-
-  file(REMOVE_RECURSE ${INSTALL_DIR})
-  file(RENAME ${SRC_DIR} ${INSTALL_DIR})
-  file(REMOVE_RECURSE ${EXTRACT_DIR})
-
+if(${SRC_DIR}/LICENSE IS_NEWER_THAN ${CMAKE_CURRENT_LIST_DIR}/doc_help/argon2-LICENSE.txt)
   file(COPY
-    ${INSTALL_DIR}/LICENSE
-    DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help
-    )
+    ${SRC_DIR}/LICENSE
+    DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help)
   file(RENAME
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/LICENSE
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/argon2-LICENSE.txt)

Modified: trunk/libs/buildcjson.cmake
===================================================================
--- trunk/libs/buildcjson.cmake	2022-11-12 14:44:30 UTC (rev 10361)
+++ trunk/libs/buildcjson.cmake	2022-11-12 14:44:41 UTC (rev 10362)
@@ -1,36 +1,14 @@
 # cmake -P buildcjson.cmake
 
-set(SRC_DIR_BASE "cJSON-1.7.14")
-set(SRC_ARC "v1.7.14.zip")
-set(SRC_URL "https://github.com/DaveGamble/cJSON/archive/v1.7.14.zip")
-set(SRC_ARC_HASH_SHA256 d797b4440c91a19fa9c721d1f8bab21078624aa9555fc64c5c82e24aa2a08221)
-set(DOWN_DIR "${CMAKE_SOURCE_DIR}/download/cJSON")
-set(EXTRACT_DIR "${CMAKE_SOURCE_DIR}/build/cJSON")
-set(SRC_DIR "${CMAKE_SOURCE_DIR}/build/cJSON/${SRC_DIR_BASE}")
-set(INSTALL_DIR "${CMAKE_SOURCE_DIR}/cJSON")
+set(SRC_DIR "${CMAKE_CURRENT_LIST_DIR}/cJSON")
 
-if(NOT EXISTS ${INSTALL_DIR}/README.md)
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -DTARGET=cjson -P download.cmake
+)
 
-  file(DOWNLOAD
-    ${SRC_URL}
-    ${DOWN_DIR}/${SRC_ARC}
-    EXPECTED_HASH SHA256=${SRC_ARC_HASH_SHA256}
-    SHOW_PROGRESS
-    )
-
-  file(MAKE_DIRECTORY ${EXTRACT_DIR})
-
-  execute_process(
-    COMMAND ${CMAKE_COMMAND} -E tar "xvf" ${DOWN_DIR}/${SRC_ARC}
-    WORKING_DIRECTORY ${EXTRACT_DIR}
-    )
-
-  file(REMOVE_RECURSE ${INSTALL_DIR})
-  file(RENAME ${SRC_DIR} ${INSTALL_DIR})
-  file(REMOVE_RECURSE ${EXTRACT_DIR})
-
+if(${SRC_DIR}/LICENSE IS_NEWER_THAN ${CMAKE_CURRENT_LIST_DIR}/doc_help/cJSON-LICENSE.txt)
   file(COPY
-    ${INSTALL_DIR}/LICENSE
+    ${SRC_DIR}/LICENSE
     DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help)
   file(RENAME
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/LICENSE

Modified: trunk/libs/buildlibressl.cmake
===================================================================
--- trunk/libs/buildlibressl.cmake	2022-11-12 14:44:30 UTC (rev 10361)
+++ trunk/libs/buildlibressl.cmake	2022-11-12 14:44:41 UTC (rev 10362)
@@ -5,16 +5,10 @@
 
 include(script_support.cmake)
 
-set(SRC_DIR_BASE "libressl-3.4.3")
-set(SRC_ARC "libressl-3.4.3.tar.gz")
-set(SRC_URL "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.4.3.tar.gz")
-set(SRC_ARC_HASH_SHA256 ff88bffe354818b3ccf545e3cafe454c5031c7a77217074f533271d63c37f08d)
-
-set(DOWN_DIR "${CMAKE_SOURCE_DIR}/download/libressl")
-set(EXTRACT_DIR "${CMAKE_SOURCE_DIR}/build/libressl/src")
-set(SRC_DIR "${EXTRACT_DIR}/${SRC_DIR_BASE}")
-set(INSTALL_DIR "${CMAKE_SOURCE_DIR}/libressl_${TOOLSET}")
-set(BUILD_DIR "${CMAKE_SOURCE_DIR}/build/libressl/build_${TOOLSET}")
+set(EXTRACT_DIR "${CMAKE_CURRENT_LIST_DIR}/build/libressl/src")
+set(SRC_DIR "${EXTRACT_DIR}/libressl")
+set(BUILD_DIR "${CMAKE_CURRENT_LIST_DIR}/build/libressl/build_${TOOLSET}")
+set(INSTALL_DIR "${CMAKE_CURRENT_LIST_DIR}/libressl_${TOOLSET}")
 if(("${CMAKE_GENERATOR}" MATCHES "Win64") OR ("$ENV{MSYSTEM_CHOST}" STREQUAL "x86_64-w64-mingw32") OR ("${ARCHITECTURE}" MATCHES "x64") OR ("${CMAKE_COMMAND}" MATCHES "mingw64"))
   set(INSTALL_DIR "${INSTALL_DIR}_x64")
   set(BUILD_DIR "${BUILD_DIR}_x64")
@@ -53,26 +47,16 @@
 
 ########################################
 
-if(NOT EXISTS ${SRC_DIR}/README.md)
+file(MAKE_DIRECTORY ${SRC_DIR})
 
-  file(DOWNLOAD
-    ${SRC_URL}
-    ${DOWN_DIR}/${SRC_ARC}
-    EXPECTED_HASH SHA256=${SRC_ARC_HASH_SHA256}
-    SHOW_PROGRESS
-    )
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -DTARGET=libressl -DEXT_DIR=${EXTRACT_DIR} -P download.cmake
+)
 
-  file(MAKE_DIRECTORY ${EXTRACT_DIR})
-
-  execute_process(
-    COMMAND ${CMAKE_COMMAND} -E tar "xvf" ${DOWN_DIR}/${SRC_ARC}
-    WORKING_DIRECTORY ${EXTRACT_DIR}
-    )
-
+if(${SRC_DIR}/COPYING IS_NEWER_THAN ${CMAKE_CURRENT_LIST_DIR}/doc_help/LibreSSL-LICENSE.txt)
   file(COPY
     ${SRC_DIR}/COPYING
-    DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help
-    )
+    DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help)
   file(RENAME
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/COPYING
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/LibreSSL-LICENSE.txt)

Modified: trunk/libs/buildoniguruma.cmake
===================================================================
--- trunk/libs/buildoniguruma.cmake	2022-11-12 14:44:30 UTC (rev 10361)
+++ trunk/libs/buildoniguruma.cmake	2022-11-12 14:44:41 UTC (rev 10362)
@@ -7,16 +7,10 @@
 
 include(script_support.cmake)
 
-set(SRC_DIR_BASE "onig-6.9.8")
-set(SRC_ARC "${SRC_DIR_BASE}.tar.gz")
-set(SRC_URL "https://github.com/kkos/oniguruma/releases/download/v6.9.8/${SRC_ARC}")
-set(SRC_ARC_HASH_SHA256 28cd62c1464623c7910565fb1ccaaa0104b2fe8b12bcd646e81f73b47535213e)
-
-set(DOWN_DIR "${CMAKE_SOURCE_DIR}/download/oniguruma")
-set(EXTRACT_DIR "${CMAKE_SOURCE_DIR}/build/oniguruma/src")
-set(SRC_DIR "${EXTRACT_DIR}/${SRC_DIR_BASE}")
-set(INSTALL_DIR "${CMAKE_SOURCE_DIR}/oniguruma_${TOOLSET}")
-set(BUILD_DIR "${CMAKE_SOURCE_DIR}/build/oniguruma/build_${TOOLSET}")
+set(EXTRACT_DIR "${CMAKE_CURRENT_LIST_DIR}/build/oniguruma/src")
+set(SRC_DIR "${EXTRACT_DIR}/oniguruma")
+set(INSTALL_DIR "${CMAKE_CURRENT_LIST_DIR}/oniguruma_${TOOLSET}")
+set(BUILD_DIR "${CMAKE_CURRENT_LIST_DIR}/build/oniguruma/build_${TOOLSET}")
 if(("${CMAKE_GENERATOR}" MATCHES "Win64") OR ("$ENV{MSYSTEM_CHOST}" STREQUAL "x86_64-w64-mingw32") OR ("${ARCHITECTURE}" MATCHES "x64") OR ("${CMAKE_COMMAND}" MATCHES "mingw64"))
   set(INSTALL_DIR "${INSTALL_DIR}_x64")
   set(BUILD_DIR "${BUILD_DIR}_x64")
@@ -29,7 +23,6 @@
 
 # Configure + Generate
 function(cmake_generate GENERATOR SRC_DIR WORKING_DIR OPTIONS)
-  message("${CMAKE_COMMAND} ${SRC_DIR} -G \"${GENERATOR}\" ${OPTIONS}")
   execute_process(
     COMMAND ${CMAKE_COMMAND} ${SRC_DIR} -G "${GENERATOR}" ${OPTIONS}
     WORKING_DIRECTORY "${BUILD_DIR}"
@@ -43,7 +36,6 @@
 
 # build + install
 function(cmake_build WORKING_DIR OPTIONS BUILD_TOOL_OPTIONS)
-  message("${CMAKE_COMMAND} --build . ${OPTIONS} --target install -- ${BUILD_TOOL_OPTIONS}")
   execute_process(
     COMMAND ${CMAKE_COMMAND} --build . ${OPTIONS} --target install -- ${BUILD_TOOL_OPTIONS}
     WORKING_DIRECTORY "${BUILD_DIR}"
@@ -57,26 +49,16 @@
 
 ########################################
 
-if(NOT EXISTS ${SRC_DIR}/README.md)
+file(MAKE_DIRECTORY ${SRC_DIR})
 
-  file(DOWNLOAD
-    ${SRC_URL}
-    ${DOWN_DIR}/${SRC_ARC}
-    EXPECTED_HASH SHA256=${SRC_ARC_HASH_SHA256}
-    SHOW_PROGRESS
-    )
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -DTARGET=oniguruma -DEXT_DIR=${EXTRACT_DIR} -P download.cmake
+)
 
-  file(MAKE_DIRECTORY ${EXTRACT_DIR})
-
-  execute_process(
-    COMMAND ${CMAKE_COMMAND} -E tar "xvf" ${DOWN_DIR}/${SRC_ARC}
-    WORKING_DIRECTORY ${EXTRACT_DIR}
-    )
-
+if(${SRC_DIR}/COPYING IS_NEWER_THAN ${CMAKE_CURRENT_LIST_DIR}/doc_help/Oniguruma-LICENSE.txt)
   file(COPY
     ${SRC_DIR}/COPYING
-    DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help
-    )
+    DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help)
   file(RENAME
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/COPYING
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/Oniguruma-LICENSE.txt)

Modified: trunk/libs/buildputty.cmake
===================================================================
--- trunk/libs/buildputty.cmake	2022-11-12 14:44:30 UTC (rev 10361)
+++ trunk/libs/buildputty.cmake	2022-11-12 14:44:41 UTC (rev 10362)
@@ -1,37 +1,14 @@
 # cmake -P buildputty.cmake
 
-set(SRC_DIR_BASE "putty-0.76")
-set(SRC_ARC "putty-0.76.tar.gz")
-set(SRC_URL "https://the.earth.li/~sgtatham/putty/0.76/putty-0.76.tar.gz")
-set(SRC_ARC_HASH_SHA256 547cd97a8daa87ef71037fab0773bceb54a8abccb2f825a49ef8eba5e045713f)
+set(SRC_DIR "${CMAKE_CURRENT_LIST_DIR}/putty")
 
-set(DOWN_DIR "${CMAKE_SOURCE_DIR}/download/putty")
-set(EXTRACT_DIR "${CMAKE_SOURCE_DIR}/build/putty/src")
-set(SRC_DIR "${CMAKE_SOURCE_DIR}/build/putty/src/${SRC_DIR_BASE}")
-set(INSTALL_DIR "${CMAKE_SOURCE_DIR}/putty")
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -DTARGET=putty -P download.cmake
+)
 
-if(NOT EXISTS ${INSTALL_DIR}/README)
-
-  file(DOWNLOAD
-    ${SRC_URL}
-    ${DOWN_DIR}/${SRC_ARC}
-    EXPECTED_HASH SHA256=${SRC_ARC_HASH_SHA256}
-    SHOW_PROGRESS
-    )
-
-  file(MAKE_DIRECTORY ${EXTRACT_DIR})
-
-  execute_process(
-    COMMAND ${CMAKE_COMMAND} -E tar "xvf" ${DOWN_DIR}/${SRC_ARC}
-    WORKING_DIRECTORY ${EXTRACT_DIR}
-    )
-
-  file(REMOVE_RECURSE ${INSTALL_DIR})
-  file(RENAME ${SRC_DIR} ${INSTALL_DIR})
-  file(REMOVE_RECURSE ${EXTRACT_DIR})
-
+if(${SRC_DIR}/LICENSE IS_NEWER_THAN ${CMAKE_CURRENT_LIST_DIR}/doc_help/cJSON-LICENSE.txt)
   file(COPY
-    ${INSTALL_DIR}/LICENCE
+    ${SRC_DIR}/LICENCE
     DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help)
   file(RENAME
     ${CMAKE_CURRENT_LIST_DIR}/doc_help/LICENCE

Modified: trunk/libs/buildsfmt.cmake
===================================================================
--- trunk/libs/buildsfmt.cmake	2022-11-12 14:44:30 UTC (rev 10361)
+++ trunk/libs/buildsfmt.cmake	2022-11-12 14:44:41 UTC (rev 10362)
@@ -57,17 +57,10 @@
 
 include(script_support.cmake)
 
-set(SFMT_VERSION "1.5.1")
-set(SRC_DIR_BASE "SFMT-src-1.5.1")
-set(SRC_ARC "SFMT-1.5.1.zip")
-set(SRC_URL "http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/SFMT-src-1.5.1.zip")
-set(SRC_ARC_HASH_SHA256 630d1dfa6b690c30472f75fa97ca90ba62f9c13c5add6c264fdac2c1d3a878f4)
-
-set(DOWN_DIR "${CMAKE_SOURCE_DIR}/download/SFMT")
-set(EXTRACT_DIR "${CMAKE_SOURCE_DIR}/build/SFMT/src")
-set(SRC_DIR "${CMAKE_SOURCE_DIR}/build/SFMT/src/${SRC_DIR_BASE}")
-set(BUILD_DIR "${CMAKE_SOURCE_DIR}/build/SFMT/build_${TOOLSET}")
-set(INSTALL_DIR "${CMAKE_SOURCE_DIR}/SFMT_${TOOLSET}")
+set(EXTRACT_DIR "${CMAKE_CURRENT_LIST_DIR}/build/SFMT/src")
+set(SRC_DIR "${EXTRACT_DIR}/SFMT")
+set(BUILD_DIR "${CMAKE_CURRENT_LIST_DIR}/build/SFMT/build_${TOOLSET}")
+set(INSTALL_DIR "${CMAKE_CURRENT_LIST_DIR}/SFMT_${TOOLSET}")
 if(("${CMAKE_GENERATOR}" MATCHES "Win64") OR ("${ARCHITECTURE}" MATCHES "x64") OR ("$ENV{MSYSTEM_CHOST}" STREQUAL "x86_64-w64-mingw32") OR ("${CMAKE_COMMAND}" MATCHES "mingw64"))
   set(BUILD_DIR "${BUILD_DIR}_x64")
   set(INSTALL_DIR "${INSTALL_DIR}_x64")
@@ -75,22 +68,13 @@
 
 ########################################
 
-if(NOT EXISTS ${SRC_DIR}/README.txt)
+file(MAKE_DIRECTORY ${SRC_DIR})
 
-  file(DOWNLOAD
-    ${SRC_URL}
-    ${DOWN_DIR}/${SRC_ARC}
-    EXPECTED_HASH SHA256=${SRC_ARC_HASH_SHA256}
-    SHOW_PROGRESS
-    )
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -DTARGET=sfmt -DEXT_DIR=${EXTRACT_DIR} -P download.cmake
+)
 
-  file(MAKE_DIRECTORY ${EXTRACT_DIR})
-
-  execute_process(
-    COMMAND ${CMAKE_COMMAND} -E tar "xvf" ${DOWN_DIR}/${SRC_ARC}
-    WORKING_DIRECTORY ${EXTRACT_DIR}
-    )
-
+if(${SRC_DIR}/COPYING IS_NEWER_THAN ${CMAKE_CURRENT_LIST_DIR}/doc_help/LibreSSL-LICENSE.txt)
   file(COPY
     ${SRC_DIR}/LICENSE.txt
     DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help)
@@ -101,20 +85,9 @@
 
 ########################################
 
-if(NOT EXISTS ${SRC_DIR}/SFMT_version_for_teraterm.h)
-  file(WRITE "${SRC_DIR}/SFMT_version_for_teraterm.h"
-    "// created by cmake\n"
-    "#pragma once\n"
-    "#ifndef SFMT_VERSION_H\n"
-    "#define SFMT_VERSION_H\n"
-    "#define SFMT_VERSION \"${SFMT_VERSION}\"\n"
-    "#endif"
-    )
-
-endif()
 if(NOT EXISTS ${SRC_DIR}/CMakeLists.txt)
   file(WRITE "${SRC_DIR}/CMakeLists.txt"
-    "cmake_minimum_required(VERSION 2.4.4)\n"
+    "cmake_minimum_required(VERSION 3.11.4)\n"
     "project(SFMT C)\n"
     "\n"
     "if(MSVC)\n"

Modified: trunk/libs/buildzlib.cmake
===================================================================
--- trunk/libs/buildzlib.cmake	2022-11-12 14:44:30 UTC (rev 10361)
+++ trunk/libs/buildzlib.cmake	2022-11-12 14:44:41 UTC (rev 10362)
@@ -56,16 +56,10 @@
 
 include(script_support.cmake)
 
-set(SRC_DIR_BASE "zlib-1.2.12")
-set(SRC_ARC "zlib-1.2.12.tar.xz")
-set(SRC_URL "https://zlib.net/zlib-1.2.12.tar.xz")
-set(SRC_ARC_HASH_SHA256 7db46b8d7726232a621befaab4a1c870f00a90805511c0e0090441dac57def18)
-
-set(DOWN_DIR "${CMAKE_SOURCE_DIR}/download/zlib")
-set(EXTRACT_DIR "${CMAKE_SOURCE_DIR}/build/zlib/src")
-set(SRC_DIR "${CMAKE_SOURCE_DIR}/build/zlib/src/${SRC_DIR_BASE}")
-set(BUILD_DIR "${CMAKE_SOURCE_DIR}/build/zlib/build_${TOOLSET}")
-set(INSTALL_DIR "${CMAKE_SOURCE_DIR}/zlib_${TOOLSET}")
+set(EXTRACT_DIR "${CMAKE_CURRENT_LIST_DIR}/build/zlib/src")
+set(SRC_DIR "${EXTRACT_DIR}/zlib")
+set(BUILD_DIR "${CMAKE_CURRENT_LIST_DIR}/build/zlib/build_${TOOLSET}")
+set(INSTALL_DIR "${CMAKE_CURRENT_LIST_DIR}/zlib_${TOOLSET}")
 if(("${CMAKE_GENERATOR}" MATCHES "Win64") OR ("${ARCHITECTURE}" MATCHES "x64") OR ("$ENV{MSYSTEM_CHOST}" STREQUAL "x86_64-w64-mingw32") OR ("${CMAKE_COMMAND}" MATCHES "mingw64"))
   set(BUILD_DIR "${BUILD_DIR}_x64")
   set(INSTALL_DIR "${INSTALL_DIR}_x64")
@@ -73,22 +67,13 @@
 
 ########################################
 
-if(NOT EXISTS ${SRC_DIR}/README)
+file(MAKE_DIRECTORY ${SRC_DIR})
 
-  file(DOWNLOAD
-    ${SRC_URL}
-    ${DOWN_DIR}/${SRC_ARC}
-    EXPECTED_HASH SHA256=${SRC_ARC_HASH_SHA256}
-    SHOW_PROGRESS
-    )
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -DTARGET=zlib -DEXT_DIR=${EXTRACT_DIR} -P download.cmake
+)
 
-  file(MAKE_DIRECTORY ${EXTRACT_DIR})
-
-  execute_process(
-    COMMAND ${CMAKE_COMMAND} -E tar "xvf" ${DOWN_DIR}/${SRC_ARC}
-    WORKING_DIRECTORY ${EXTRACT_DIR}
-    )
-
+if(${SRC_DIR}/README IS_NEWER_THAN ${CMAKE_CURRENT_LIST_DIR}/doc_help/zlib-LICENSE.txt)
   file(COPY
     ${SRC_DIR}/README
     DESTINATION ${CMAKE_CURRENT_LIST_DIR}/doc_help)


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