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From de3c48d72ec7064e7f0522877fe759c729df0c50 Mon Sep 17 00:00:00 2001 |
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From: Maxim Cournoyer <maxim.cournoyer@gmail.com> |
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Date: Wed, 25 Mar 2020 11:32:18 -0400 |
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Subject: [PATCH] Allow using a system provided libgit2 library |
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|
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Setting the USE_SYSTEM_LIBGIT2 Make or CMake variable (through the |
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BUILD_OPTIONS variable) to any value enables using the system library. |
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The default behavior of using a bundled copy of libgit2 is unchanged. |
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--- |
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CMakeLists.txt | 9 +++++++-- |
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Makefile | 11 +++++++++++ |
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src/CMakeLists.txt | 9 +++++++-- |
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3 files changed, 25 insertions(+), 4 deletions(-) |
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|
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diff --git CMakeLists.txt CMakeLists.txt |
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index a393d7c..75d6ca6 100644 |
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--- CMakeLists.txt |
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+++ CMakeLists.txt |
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@@ -7,9 +7,14 @@ set(BUILD_SHARED_LIBS OFF CACHE BOOL "shared" FORCE) |
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set(BUILD_CLAR OFF CACHE BOOL "clar" FORCE) |
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set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DEGIT_DEBUG") |
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|
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-add_subdirectory(libgit2) |
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+if(USE_SYSTEM_LIBGIT2) |
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+ find_package(PkgConfig REQUIRED) |
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+ pkg_check_modules(git2 REQUIRED IMPORTED_TARGET libgit2) |
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+else() |
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+ add_subdirectory(libgit2) |
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+ find_library(git2 libgit2.a) |
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+endif() |
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|
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-find_library(git2 libgit2.a) |
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add_subdirectory(src) |
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|
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enable_testing() |
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diff --git Makefile Makefile |
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index 8199532..6a6a4e1 100644 |
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--- Makefile |
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+++ Makefile |
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@@ -13,6 +13,13 @@ ifeq ($(UNAME),MSYS) |
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BUILD_OPTIONS+= -G "MSYS Makefiles" |
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endif |
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|
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+# If the variable USE_SYSTEM_LIBGIT2 is set to *any* value, use the |
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+# system provided libgit2 library. |
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+USE_SYSTEM_LIBGIT2? := \ |
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+ $(if $(or $(USE_SYSTEM_LIBGIT2),\ |
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+ $(findstring USE_SYSTEM_LIBGIT2,$(BUILD_OPTIONS))),\ |
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+ true) |
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+ |
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ifeq "$(TRAVIS)" "true" |
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## Makefile for Travis ################################################### |
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# |
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@@ -87,7 +94,11 @@ submodule-update: |
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@git submodule update |
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|
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libgit2: |
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+ifeq ($(USE_SYSTEM_LIBGIT2?),) |
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@git submodule update --init |
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+else |
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+ @echo "Using the system provided libgit2 library" |
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+endif |
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|
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CLEAN = $(ELCS) $(PKG)-autoloads.el build |
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|
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diff --git src/CMakeLists.txt src/CMakeLists.txt |
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index cfb5777..0dbad8a 100644 |
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--- src/CMakeLists.txt |
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+++ src/CMakeLists.txt |
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@@ -13,8 +13,13 @@ if(WIN32) |
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set_target_properties(egit2 PROPERTIES PREFIX lib) |
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endif(WIN32) |
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|
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-target_link_libraries(egit2 git2) |
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-target_include_directories(egit2 SYSTEM PRIVATE "${libgit2_SOURCE_DIR}/include") |
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+if(USE_SYSTEM_LIBGIT2) |
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+ target_link_libraries(egit2 PRIVATE PkgConfig::git2) |
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+else() |
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+ target_link_libraries(egit2 git2) |
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+ target_include_directories( |
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+ egit2 SYSTEM PRIVATE "${libgit2_SOURCE_DIR}/include") |
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+endif() |
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|
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if(CMAKE_COMPILER_IS_GNUCC) |
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target_compile_options(egit2 PRIVATE -Wall -Wextra) |