From 4db1cd9721f2a404a53edaa48a688db251d1daf5 Mon Sep 17 00:00:00 2001
From: Vollstrecker <werner@vollstreckernet.de>
Date: Wed, 31 Dec 2025 11:11:28 +0100
Subject: CMake: Added contrib/iostream3.

---
 contrib/CMakeLists.txt           |  9 ++++
 contrib/ada/CMakeLists.txt       |  4 +-
 contrib/iostream3/CMakeLists.txt | 92 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 103 insertions(+), 2 deletions(-)
 create mode 100644 contrib/iostream3/CMakeLists.txt

diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index cf5c1e0..13fe2d4 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -1,5 +1,6 @@
 option(ZLIB_BUILD_ADA "Enable building of Ada bindings" OFF)
 option(ZLIB_BUILD_BLAST "Enable building of blast binary" OFF)
+option(ZLIB_BUILD_IOSTREAM3 "Build with IOStream C++ bindings V3" OFF)
 option(ZLIB_BUILD_MINIZIP "Enable building libminizip contrib library" OFF)
 option(ZLIB_WITH_GVMAT64
        "Enable an optiomized longest_match for 32 bits x86_64"
@@ -30,6 +31,14 @@ endif(ZLIB_BUILD_MINIZIP)
 if(ZLIB_WITH_GVMAT64)
    add_subdirectory(gcc_gvmat64/)
 endif(ZLIB_WITH_GVMAT64)
+
 if(ZLIB_WITH_INFBACK9)
    add_subdirectory(infback9/)
 endif(ZLIB_WITH_INFBACK9)
+
+if(ZLIB_BUILD_IOSTREAM3)
+    set(ZLIB_IOSTREAM3_BUILD_SHARED ${ZLIB_BUILD_SHARED})
+    set(ZLIB_IOSTREAM3_BUILD_STATIC ${ZLIB_BUILD_STATIC})
+    set(ZLIB_IOSTREAM3_TESTING ${ZLIB_BUILD_TESTING})
+    add_subdirectory(iostream3/)
+endif(ZLIB_BUILD_IOSTREAM3)
diff --git a/contrib/ada/CMakeLists.txt b/contrib/ada/CMakeLists.txt
index cb8b156..3ede5f9 100644
--- a/contrib/ada/CMakeLists.txt
+++ b/contrib/ada/CMakeLists.txt
@@ -14,7 +14,7 @@ option(ZLIB_ADA_BUILD_STATIC "Enable building ada bindings static library" ON)
 option(ZLIB_ADA_BUILD_TESTING "Enable building tests for ada bindings library" ON)
 
 if(WIN32 OR CYGWIN)
-    set(zlibAda_static_suffix "s")
+    set(zlib_Ada_static_suffix "s")
     set(CMAKE_DEBUG_POSTFIX "d")
 endif(WIN32 OR CYGWIN)
 
@@ -150,7 +150,7 @@ if(ZLIB_ADA_BUILD_STATIC)
         INTERFACE ZLIB::ZLIBSTATIC)
 
     set_target_properties(zlib-AdaStatic
-        PROPERTIES OUTPUT_NAME zlib-Ada${zlibAda_static_suffix})
+        PROPERTIES OUTPUT_NAME zlib-Ada${zlib_Ada_static_suffix})
 
     ada_add_library(zlib-streamsStatic STATIC
         zlib-streams.adb)
diff --git a/contrib/iostream3/CMakeLists.txt b/contrib/iostream3/CMakeLists.txt
new file mode 100644
index 0000000..0f3bcd8
--- /dev/null
+++ b/contrib/iostream3/CMakeLists.txt
@@ -0,0 +1,92 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules")
+
+project(
+    iostreamsV3
+    VERSION 1.0.0
+    LANGUAGES CXX
+    DESCRIPTION "A library for using C++ IOStreams with zlib V3"
+    HOMEPAGE_URL "https://www.zlib.net")
+
+option(ZLIB_IOSTREAM3_BUILD_SHARED "Enable building blast shared library" ON)
+option(ZLIB_IOSTREAM3_BUILD_STATIC "Enable building blast static library" ON)
+option(ZLIB_IOSTREAM3_BUILD_TESTING "Enable building tests for blast" ON)
+
+if(NOT DEFINED ZLIB_BUILD_IOSTREAM3)
+    if(ZLIB_IOSTREAM3_BUILD_SHARED)
+        list(APPEND REQUIRED_COMPONENTS "shared")
+    endif(ZLIB_IOSTREAM3_BUILD_SHARED)
+
+    if(ZLIB_IOSTREAM3_BUILD_STATIC)
+        list(APPEND REQUIRED_COMPONENTS "static")
+    endif(ZLIB_IOSTREAM3_BUILD_STATIC)
+
+    find_package(ZLIB REQUIRED COMPONENTS ${REQUIRED_COMPONENTS} CONFIG)
+endif(NOT DEFINED ZLIB_BUILD_IOSTREAM3)
+
+if(WIN32 OR CYGWIN)
+    set(zlibIOStream3_static_suffix "s")
+    set(CMAKE_DEBUG_POSTFIX "d")
+endif(WIN32 OR CYGWIN)
+
+if(ZLIB_IOSTREAM3_BUILD_SHARED)
+    add_library(zlib-iostream3 SHARED
+                zfstream.cc
+                zfstream.h)
+
+    target_link_libraries(zlib-iostream3
+        PUBLIC ZLIB::ZLIB)
+
+    if(ZLIB_IOSTREAM3_BUILD_TESTING)
+        enable_testing()
+
+        add_executable(iostream-test test.cc)
+
+        target_link_libraries(iostream-test
+            PRIVATE zlib-iostream3)
+
+        add_test(NAME zlib_iostream3_test COMMAND iostream-test)
+
+        set_tests_properties(zlib_iostream3_test
+            PROPERTIES
+                FIXTURES_REQUIRED iostream3_cleanup)
+    endif(ZLIB_IOSTREAM3_BUILD_TESTING)
+endif(ZLIB_IOSTREAM3_BUILD_SHARED)
+
+if(ZLIB_IOSTREAM3_BUILD_STATIC)
+    add_library(zlib-iostream3Static STATIC
+                zfstream.cc
+                zfstream.h)
+
+    target_link_libraries(zlib-iostream3Static
+        INTERFACE ZLIB::ZLIBSTATIC)
+
+    set_target_properties(zlib-iostream3Static
+        PROPERTIES
+            OUTPUT_NAME zlib-iostream3${zlib_IOStream3_static_suffix})
+
+    if(ZLIB_IOSTREAM3_BUILD_TESTING)
+        enable_testing()
+
+        add_executable(iostream-testStatic test.cc)
+
+        target_link_libraries(iostream-testStatic
+            PRIVATE zlib-iostream3Static)
+        add_test(NAME zlib_iostream3_testStatic COMMAND iostream-testStatic)
+
+        set_tests_properties(zlib_iostream3_testStatic
+            PROPERTIES
+                FIXTURES_REQUIRED iostream3_cleanup)
+    endif(ZLIB_IOSTREAM3_BUILD_TESTING)
+endif(ZLIB_IOSTREAM3_BUILD_STATIC)
+
+if(ZLIB_IOSTREAM3_BUILD_TESTING)
+    add_test(NAME zlib_iostream3_cleanup COMMAND ${CMAKE_COMMAND} -E rm
+        ${CMAKE_CURRENT_BINARY_DIR}/test1.txt.gz
+        ${CMAKE_CURRENT_BINARY_DIR}/test2.txt.gz)
+
+    set_tests_properties(zlib_iostream3_cleanup
+        PROPERTIES
+            FIXTURES_CLEANUP zlib_iostream3_cleanup)
+endif(ZLIB_IOSTREAM3_BUILD_TESTING)
-- 
cgit v1.2.3-55-g6feb