From c2486f77e4ba78ba58e9894b1f6f07dd29798331 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Tue, 29 Oct 2019 16:42:41 -0400
Subject: externals: Amend zlib submodule

Supplies CMakeLists.txt file that avoids pulling in zlib's tests into
the tree. This avoids needing to explicitly opt these tests out from
ctest.
---
 externals/zlib                |  1 -
 externals/zlib/CMakeLists.txt | 81 +++++++++++++++++++++++++++++++++++++++++++
 externals/zlib/zlib           |  1 +
 3 files changed, 82 insertions(+), 1 deletion(-)
 delete mode 160000 externals/zlib
 create mode 100644 externals/zlib/CMakeLists.txt
 create mode 160000 externals/zlib/zlib

(limited to 'externals')

diff --git a/externals/zlib b/externals/zlib
deleted file mode 160000
index cacf7f1d4..000000000
--- a/externals/zlib
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit cacf7f1d4e3d44d871b605da3b647f07d718623f
diff --git a/externals/zlib/CMakeLists.txt b/externals/zlib/CMakeLists.txt
new file mode 100644
index 000000000..0ca32aae4
--- /dev/null
+++ b/externals/zlib/CMakeLists.txt
@@ -0,0 +1,81 @@
+project(zlib C)
+
+include(CheckTypeSize)
+include(CheckFunctionExists)
+include(CheckIncludeFile)
+
+check_include_file(sys/types.h HAVE_SYS_TYPES_H)
+check_include_file(stdint.h    HAVE_STDINT_H)
+check_include_file(stddef.h    HAVE_STDDEF_H)
+
+# Check to see if we have large file support
+set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
+# We add these other definitions here because CheckTypeSize.cmake
+# in CMake 2.4.x does not automatically do so and we want
+# compatibility with CMake 2.4.x.
+if(HAVE_SYS_TYPES_H)
+    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
+endif()
+if(HAVE_STDINT_H)
+    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
+endif()
+if(HAVE_STDDEF_H)
+    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
+endif()
+check_type_size(off64_t OFF64_T)
+if(HAVE_OFF64_T)
+   add_definitions(-D_LARGEFILE64_SOURCE=1)
+endif()
+set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
+
+# Check for fseeko
+check_function_exists(fseeko HAVE_FSEEKO)
+if(NOT HAVE_FSEEKO)
+    add_definitions(-DNO_FSEEKO)
+endif()
+
+# Check for unistd.h
+check_include_file(unistd.h HAVE_UNISTD_H)
+if(HAVE_UNISTD_H)
+    add_definitions(-DHAVE_UNISTD_H)
+endif()
+
+if(MSVC)
+    add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
+    add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
+endif()
+
+add_library(z STATIC
+    zlib/adler32.c
+    zlib/compress.c
+    zlib/crc32.c
+    zlib/crc32.h
+    zlib/deflate.c
+    zlib/deflate.h
+    zlib/gzclose.c
+    zlib/gzguts.h
+    zlib/gzlib.c
+    zlib/gzread.c
+    zlib/gzwrite.c
+    zlib/inffast.h
+    zlib/inffixed.h
+    zlib/inflate.c
+    zlib/inflate.h
+    zlib/infback.c
+    zlib/inftrees.c
+    zlib/inftrees.h
+    zlib/inffast.c
+    zlib/trees.c
+    zlib/trees.h
+    zlib/uncompr.c
+    zlib/zconf.h
+    zlib/zlib.h
+    zlib/zutil.c
+    zlib/zutil.h
+)
+add_library(ZLIB::ZLIB ALIAS z)
+
+target_include_directories(z
+PUBLIC
+    zlib/
+)
diff --git a/externals/zlib/zlib b/externals/zlib/zlib
new file mode 160000
index 000000000..cacf7f1d4
--- /dev/null
+++ b/externals/zlib/zlib
@@ -0,0 +1 @@
+Subproject commit cacf7f1d4e3d44d871b605da3b647f07d718623f
-- 
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