thodg/libgit2

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0e0f296..88eb9ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,6 +64,7 @@ OPTION(USE_EXT_HTTP_PARSER		"Use system HTTP_Parser if available"			 ON)
 OPTION(DEBUG_POOL			"Enable debug pool allocator"				OFF)
 OPTION(ENABLE_WERROR			"Enable compilation with -Werror"			OFF)
 OPTION(USE_BUNDLED_ZLIB    		"Use the bundled version of zlib"			OFF)
+OPTION(DEPRECATE_HARD			"Do not include deprecated functions in the library"	OFF)
 
 IF (UNIX AND NOT APPLE)
 	OPTION(ENABLE_REPRODUCIBLE_BUILDS "Enable reproducible builds"				OFF)
@@ -105,8 +106,9 @@ SET(LIBGIT2_VERSION_STRING "${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}.${
 FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER_SOVERSION REGEX "^#define LIBGIT2_SOVERSION [0-9]+$")
 STRING(REGEX REPLACE "^.*LIBGIT2_SOVERSION ([0-9]+)$" "\\1" LIBGIT2_SOVERSION "${GIT2_HEADER_SOVERSION}")
 
-# Ensure that we do not use deprecated functions internally
-ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
+IF (DEPRECATE_HARD)
+	ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
+ENDIF()
 
 # Platform specific compilation flags
 IF (MSVC)
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index bd14dac..a37319a 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -16,7 +16,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=gcc
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
 
 - job: linux_amd64_trusty_gcc_mbedtls
@@ -29,7 +29,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=gcc
-       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS
+       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
 
 - job: linux_amd64_trusty_clang_openssl
@@ -42,7 +42,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=clang
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
 
 - job: linux_amd64_trusty_clang_mbedtls
@@ -55,7 +55,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=clang
-       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS
+       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
 
 - job: macos
@@ -71,7 +71,7 @@ jobs:
         TMPDIR: $(Agent.TempDirectory)
         PKG_CONFIG_PATH: /usr/local/opt/openssl/lib/pkgconfig
         LEAK_CHECK: leaks
-        CMAKE_OPTIONS: -G Ninja
+        CMAKE_OPTIONS: -G Ninja -DDEPRECATE_HARD=ON
         SKIP_SSH_TESTS: true
 
 - job: windows_vs_amd64
@@ -81,7 +81,7 @@ jobs:
   - template: azure-pipelines/powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013 Win64"
+        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013 Win64" -DDEPRECATE_HARD=ON
 
 - job: windows_vs_x86
   displayName: 'Windows (x86; Visual Studio)'
@@ -90,7 +90,7 @@ jobs:
   - template: azure-pipelines/powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013"
+        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013" -DDEPRECATE_HARD=ON
 
 - job: windows_mingw_amd64
   displayName: 'Windows (amd64; MinGW)'
@@ -104,7 +104,7 @@ jobs:
   - template: azure-pipelines/powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -G"MinGW Makefiles"
+        CMAKE_OPTIONS: -G"MinGW Makefiles" -DDEPRECATE_HARD=ON
         PATH: $(Agent.TempDirectory)\mingw64\bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\CMake\bin
 
 - job: windows_mingw_x86
@@ -120,7 +120,7 @@ jobs:
   - template: azure-pipelines/powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -G"MinGW Makefiles"
+        CMAKE_OPTIONS: -G"MinGW Makefiles" -DDEPRECATE_HARD=ON
         PATH: $(Agent.TempDirectory)\mingw32\bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\CMake\bin
 
 - job: documentation
diff --git a/azure-pipelines/nightly.yml b/azure-pipelines/nightly.yml
index 9f2430e..fd76b97 100644
--- a/azure-pipelines/nightly.yml
+++ b/azure-pipelines/nightly.yml
@@ -12,7 +12,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=gcc
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
        RUN_INVASIVE_TESTS=true
 
@@ -26,7 +26,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=gcc
-       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS
+       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
        RUN_INVASIVE_TESTS=true
 
@@ -40,7 +40,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=clang
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
        RUN_INVASIVE_TESTS=true
 
@@ -54,7 +54,7 @@ jobs:
       imageName: 'libgit2/trusty-amd64:latest'
       environmentVariables: |
        CC=clang
-       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS
+       CMAKE_OPTIONS=-DUSE_HTTPS=mbedTLS -DSHA1_BACKEND=mbedTLS -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
        RUN_INVASIVE_TESTS=true
 
@@ -71,7 +71,7 @@ jobs:
         TMPDIR: $(Agent.TempDirectory)
         PKG_CONFIG_PATH: /usr/local/opt/openssl/lib/pkgconfig
         LEAK_CHECK: leaks
-        CMAKE_OPTIONS: -G Ninja
+        CMAKE_OPTIONS: -G Ninja -DDEPRECATE_HARD=ON
         RUN_INVASIVE_TESTS: true
         SKIP_SSH_TESTS: true
 
@@ -82,7 +82,7 @@ jobs:
   - template: powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013 Win64"
+        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013 Win64" -DDEPRECATE_HARD=ON
         RUN_INVASIVE_TESTS: true
 
 - job: windows_vs_x86
@@ -92,7 +92,7 @@ jobs:
   - template: powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013"
+        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -G"Visual Studio 12 2013" -DDEPRECATE_HARD=ON
         RUN_INVASIVE_TESTS: true
 
 - job: windows_mingw_amd64
@@ -107,7 +107,7 @@ jobs:
   - template: powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -G"MinGW Makefiles"
+        CMAKE_OPTIONS: -G"MinGW Makefiles" -DDEPRECATE_HARD=ON
         PATH: $(Agent.TempDirectory)\mingw64\bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\CMake\bin
         RUN_INVASIVE_TESTS: true
 
@@ -124,7 +124,7 @@ jobs:
   - template: powershell.yml
     parameters:
       environmentVariables:
-        CMAKE_OPTIONS: -G"MinGW Makefiles"
+        CMAKE_OPTIONS: -G"MinGW Makefiles" -DDEPRECATE_HARD=ON
         PATH: $(Agent.TempDirectory)\mingw32\bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\CMake\bin
         RUN_INVASIVE_TESTS: true
 
@@ -139,7 +139,7 @@ jobs:
       imageName: 'libgit2/bionic-x86:latest'
       environmentVariables: |
        CC=gcc
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
        RUN_INVASIVE_TESTS=true
 
@@ -154,7 +154,7 @@ jobs:
       imageName: 'libgit2/bionic-x86:latest'
       environmentVariables: |
        CC=clang
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        LEAK_CHECK=valgrind
        RUN_INVASIVE_TESTS=true
 
@@ -169,7 +169,7 @@ jobs:
       imageName: 'libgit2/bionic-arm32:latest'
       environmentVariables: |
        CC=gcc
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        RUN_INVASIVE_TESTS=true
        SKIP_PROXY_TESTS=true
 
@@ -184,6 +184,6 @@ jobs:
       imageName: 'libgit2/bionic-arm64:latest'
       environmentVariables: |
        CC=gcc
-       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL
+       CMAKE_OPTIONS=-DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON
        RUN_INVASIVE_TESTS=true
        SKIP_PROXY_TESTS=true
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 49edaec..e631b96 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -5,6 +5,9 @@ FILE(GLOB_RECURSE SRC_EXAMPLE_GIT2 network/*.c network/*.h common.?)
 ADD_EXECUTABLE(cgit2 ${SRC_EXAMPLE_GIT2})
 SET_TARGET_PROPERTIES(cgit2 PROPERTIES C_STANDARD 90)
 
+# Ensure that we do not use deprecated functions internally
+ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
+
 IF(WIN32 OR ANDROID)
 	TARGET_LINK_LIBRARIES(cgit2 git2)
 ELSE()
diff --git a/src/common.h b/src/common.h
index 6e1eac8..18ba72d 100644
--- a/src/common.h
+++ b/src/common.h
@@ -79,6 +79,12 @@
 #include "thread-utils.h"
 #include "integer.h"
 
+/*
+ * Include the declarations for deprecated functions; this ensures
+ * that they're decorated with the proper extern/visibility attributes.
+ */
+#include "git2/deprecated.h"
+
 #include <regex.h>
 
 #define DEFAULT_BUFSIZE 65536
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 6ce5ae0..aaa8ed1 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -11,6 +11,9 @@ ADD_DEFINITIONS(-DCLAR_FIXTURE_PATH=\"${CLAR_FIXTURES}\")
 ADD_DEFINITIONS(-DCLAR_TMPDIR=\"libgit2_tests\")
 ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=64)
 
+# Ensure that we do not use deprecated functions internally
+ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
+
 INCLUDE_DIRECTORIES(${CLAR_PATH} ${libgit2_BINARY_DIR}/src)
 FILE(GLOB_RECURSE SRC_TEST ${CLAR_PATH}/*/*.c ${CLAR_PATH}/*/*.h)
 SET(SRC_CLAR "main.c" "clar_libgit2.c" "clar_libgit2_trace.c" "clar_libgit2_timer.c" "clar.c")