源码编译RPM包
获取源码
官方文档：https://doc.beegfs.io/latest/advanced_topics/building_from_sources.html
获取源码：
RPM 包构建环境准备
CentOS 7 环境
启动一个虚拟机用于构建，如下：
virt-builder centos-7.8 \
--size 20G \
--output /var/lib/libvirt/images/gitlab-runner-centos7-base.qcow2 \
--format qcow2 \
--hostname gitlab-runner-centos7 \
--root-password password:f
阅读 BUILD.txt，需要安装如下包：
yum install -y libuuid-devel \
libibverbs-devel librdmacm-devel \
libattr-devel redhat-rpm-config \
rpm-build xfsprogs-devel zlib-devel ant gcc-c++ gcc \
redhat-lsb-core java-devel \
unzip libcurl-devel elfutils-libelf-devel \
kernel-devel libblkid-devel
需要将 gcc 版本升级到高版本，支持 C++14，安装 scl
开启 devtoolset-7
构建 RPM 包：
# 构建
make package-rpm PACKAGE_DIR=packages-rpm
# 并行构建，n 为并行的数量
make package-rpm PACKAGE_DIR=packages-rpm RPMBUILD_OPTS="-D 'MAKE_CONCURRENCY <n>'"
# 自动并行构建
make package-rpm PACKAGE_DIR=packages-rpm RPMBUILD_OPTS="-D \"MAKE_CONCURRENCY $(nproc)\""
可以一行 shell 完成使用 devtoolset-7 构建：
scl enable devtoolset-7 bash << __EOF__
gcc --version
make package-rpm PACKAGE_DIR=packages-rpm RPMBUILD_OPTS="-D \"MAKE_CONCURRENCY $(nproc)\"" > /dev/null
__EOF__
注意 centos7 还需要更新下 git 版本
yum install -y https://repo.ius.io/ius-release-el7.rpm
yum erase -y git*
yum install -y git-core git-lfs
git lfs install --skip-repo
Rocky 9 环境
与 centos7 类似
需要安装的包如下：
dnf install -y epel-release
dnf groupinstall -y "Development Tools"
rpm -e --nodeps curl
dnf install -y curl-minimal
dnf install -y libuuid-devel \
libibverbs-devel librdmacm-devel \
libattr-devel redhat-rpm-config \
rpm-build xfsprogs-devel zlib-devel ant gcc-c++ gcc \
java-devel \
unzip libcurl-devel elfutils-libelf-devel \
kernel-devel libblkid-devel
源码编译分析
Makefile
查看 Makefile，BeeGFS 自己实现了一个简单的 Makefile 工程模板，所有的子模块都使用这一套模板来变异，十分简单高效：
> make -j$(nproc) -C meta/build help
make: Entering directory '/code/git.beegfs.io/pub/beegfs-v7/meta/build'
Optional arguments:
BEEGFS_DEBUG=1 Enables debug information and symbols
BEEGFS_DEBUG_OPT=1 Enables internal debug code, but compiled
with optimizations
CXX=<compiler> Specifies a c++ compiler
DISTCC=distcc Enables the usage of distcc
V=1 Print command lines of tool invocations
BEEGFS_COMMON_PATH=<path> Path to the common directory
BEEGFS_THIRDPARTY_PATH=<path>
Path to the thirdparty directory
Targets:
all (default) build only
clean delete compiled files
help print this help message
make: Leaving directory '/code/git.beegfs.io/pub/beegfs-v7/meta/build'
meta/build/Makefile 的 Makefile 内容如下：
include ../../build/Makefile
main := ../source/program/Main.cpp
sources := $(filter-out $(main), $(shell find ../source -iname '*.cpp'))
$(call build-static-library,\
Meta,\
$(sources),\
common dl blkid uuid,\
../source)
$(call define-dep-lib,\
Meta,\
-I ../source,\
$(build_dir)/libMeta.a)
$(call build-executable,\
beegfs-meta,\
$(main),\
Meta common dl blkid uuid)
$(call build-test,\
test-runner,\
$(shell find ../tests -name '*.cpp'),\
Meta common dl blkid uuid,\
../tests)
# enable special reference DirInode debug code
ifneq ($(BEEGFS_DEBUG_RELEASE_DIR),) # extra release dir debugging
CXXFLAGS += -DBEEGFS_DEBUG_RELEASE_DIR
endif
build/Makefile 内容如下：
...
define define-dep-lib
$(strip
$(eval _DEP_LIB_CXX[$(strip $1)] = $(strip $2))
$(eval _DEP_LIB_LD[$(strip $1)] = $(strip $(or $4, $3)))
$(eval _DEP_LIB_DEPS[$(strip $1)] = $(strip $3))
$(eval $(strip $3): ))
endef
...
# build-executable
#
# define a new executable for the build
# arguments:
# #1: name of the executable
# #2: sources
# #3: required libraries
# #4: include directories
build-executable = $(eval $(call -build-executable-fragment,$(strip $1),$2,$3,$4))
define -build-executable-fragment
all: $1
CLEANUP_FILES += $1 $(addsuffix .o,$2) $(addsuffix .d,$2)
$(addsuffix .o .tidy-%,$2): CXXFLAGS += \
$(foreach lib,$3,$(call resolve-dep-cflags,$(lib))) $(addprefix -I, $4)
$1: LDFLAGS += \
-Wl,--start-group $(foreach lib,$3,$(call resolve-dep-ldflags,$(lib))) -Wl,--end-group
$1: $(addsuffix .o,$2) $(foreach lib,$3,$(call resolve-dep-deps,$(lib)))
@echo "[LD] $$@"
$$V$$(CXX) -o $$@ $(addsuffix .o,$2) $$(LDFLAGS)
-include $(addsuffix .d,$2)
$(call make-tidy-rule, $1, $2,\
$(foreach lib,$3,$(call resolve-dep-cflags,$(lib))) $(addprefix -I, $4))
endef
# build-test
#
# build a test runner from specified test files. acts much like build-executable, except that it
# includes gtest in the build as a non-library .a
# #1: name if the test executable
# #2: sources
# #3: required libraries (not including gtest)
# #4: included directories (not including gtest)
define build-test
$(call build-executable, $1, $2, $3, $4 -isystem $(GTEST_INC_PATH))
$1: LDFLAGS += $(GTEST_LIB_PATH)/libgtest.a
endef
# build-static-library
#
# define a new (static) library for the build
# arguments:
# #1: name of the library
# #2: sources
# #3: required libraries
# #4: include directories
build-static-library = $(eval $(call -build-static-library-fragment,lib$(strip $1).a,$2,$3,$4))
define -build-static-library-fragment
all: $1
CLEANUP_FILES += $1 $(addsuffix .o,$2) $(addsuffix .d,$2)
$(addsuffix .o .tidy-%,$2): CXXFLAGS += \
$(foreach lib,$3,$(call resolve-dep-cflags,$(lib))) $(addprefix -I, $4)
$(build_dir)/$1: $(addsuffix .o,$2)
@echo "[AR] $1"
@rm -f $$@
$$V$(AR) -rcs $$@ $$^
$1: $(build_dir)/$1
-include $(addsuffix .d,$2)
$(call make-tidy-rule, $1, $2,\
$(foreach lib,$3,$(call resolve-dep-cflags,$(lib))) $(addprefix -I, $4))
endef
...
RPM 构建脚本
查看构建 RPM 包的方法，直接打包源码目录，并使用一个 RPM SPEC 文件模板，使用 sed 动态生成一个 SPEC 文来进行构建：
RPM 配置
参考资料：https://blog.csdn.net/chiminlai5815/article/details/100857009