89 lines
2.6 KiB
Diff
89 lines
2.6 KiB
Diff
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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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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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diff --git a/CMakeLists.txt b/CMakeLists.txt
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index a393d7c..75d6ca6 100644
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--- a/CMakeLists.txt
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+++ b/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 "${CMAKE_C_FLAGS_DEBUG} -DEGIT_DEBUG")
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-add_subdirectory(libgit2)
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+if(USE_SYSTEM_LIBGIT2)
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+ find_package(PkgConfig REQUIRED)
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+ pkg_check_modules(git2 REQUIRED IMPORTED_TARGET libgit2)
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+else()
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+ add_subdirectory(libgit2)
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+ find_library(git2 libgit2.a)
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+endif()
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-find_library(git2 libgit2.a)
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add_subdirectory(src)
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enable_testing()
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diff --git a/Makefile b/Makefile
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index 8199532..6a6a4e1 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -13,6 +13,13 @@ ifeq ($(UNAME),MSYS)
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BUILD_OPTIONS+= -G "MSYS Makefiles"
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endif
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+# 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 "$(TRAVIS)" "true"
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## Makefile for Travis ###################################################
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#
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@@ -87,7 +94,11 @@ submodule-update:
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@git submodule update
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libgit2:
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+ifeq ($(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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CLEAN = $(ELCS) $(PKG)-autoloads.el build
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diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
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index cfb5777..0dbad8a 100644
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--- a/src/CMakeLists.txt
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+++ b/src/CMakeLists.txt
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@@ -13,8 +13,13 @@ if(WIN32)
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set_target_properties(egit2 PROPERTIES PREFIX lib)
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endif(WIN32)
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-target_link_libraries(egit2 git2)
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-target_include_directories(egit2 SYSTEM PRIVATE "${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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if(CMAKE_COMPILER_IS_GNUCC)
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target_compile_options(egit2 PRIVATE -Wall -Wextra)
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--
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2.26.2
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