确保打在rpm包中的.so文件具有可执行权限

背景介绍：

有一个工程，其目录结构是：

libB

   -- libA

   -- src

   -- packaging

目录libA通过scons编译生成libA.so，目录src中的源代码通过 CMAKE编译生成libB.so, 且libB.so 依赖 libA.so. 另外有个应用程序 appC，依赖 libB.so。请问如何libB如何打包成rpm。libB.rpm

方案一：

1) 先只编译LibA，生成的libA.so在libA/libA.so，然后在libB的CMAKE文件中链接LibA.so, 并用FILES安装LibA.so.

libB.spec:

Name:           libB
Version:        0.1.0
Release:        1
License:        TO BE / FILLED IN
Group:          TO BE / FILLED IN
Source0:        %{name}-%{version}.tar.gz
Summary:        LibB
BuildRequires:  cmake
BuildRequires:  scons

%description
LibB

%package devel
Summary:        Include Files and Libraries mandatory for Development
Group:          TO BE / FILED IN
Requires:       %{name} = %{version}-%{release}

%description devel
This package contains all necessary include files and libraries needed
to develop applications that require these.

%prep
%setup -q

%build
pushd .
cd libA
scons --prefix=%{_prefix}
popd

cmake . -DCMAKE_INSTALL_PREFIX=%{_prefix}

make %{?jobs:-j%jobs}


%install
rm -rf %{buildroot}
%make_install

%clean
rm -rf %{buildroot}

%post

%postun


%files
%defattr(-,root,root,-)
%{_libdir}/libA.so
%{_libdir}/LibB.so

%files devel
%defattr(-,root,root,-)
%{_includedir}/*
%{_libdir}/pkgconfig/%{name}.pc
%{_libdir}/pkgconfig/libA.pc

           

LibB CMAKELists.txt:

CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
PROJECT(libB)

ADD_LIBRARY(${PROJECT_NAME} SHARED src/libB.c)
# 寻找libA.so
FIND_LIBRARY(LibA NAME A PATHS ${CMAKE_SOURCE_DIR}/libA DOC "LibA library")
# 链接libA.so
TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${PKGS_LDFLAGS} ${LibA})
# 安装libA.so
INSTALL(FILES ${CMAKE_SOURCE_DIR}/libA/libA.so DESTINATION ${LIBDIR})
# 安装libB.so
INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIBDIR})
           

2）编译appC

编译出错：

appC： nothing provides libA.so needed by libB

原因分析：明明libB.rpm里已经包括了libA.so 和libB.so, 为什么说没有提供libA,so?

我们解开rpm看看：

rpm2cpio libB.rpm | cpio -div
cd usr/lib
ls -l
-rwxr-xr-x 1 root root 1637738  19 18:27 libB.so
-rw-r--r-- 1 root root 1674522  19 18:27 libA.so

           

libA.so的可执行权限没有了。

原因是 以FILES安装的文件会去除可执行权限

INSTALL(FILES ${CMAKE_SOURCE_DIR}/libA/libA.so DESTINATION ${LIBDIR})
           

解决方案2：

1）编译安装libA都通过scons。

libB.spec:

Name:           libB
Version:        0.1.0
Release:        1
License:        TO BE / FILLED IN
Group:          TO BE / FILLED IN
Source0:        %{name}-%{version}.tar.gz
Summary:        LibB
BuildRequires:  cmake
BuildRequires:  scons

%description
LibB

%package devel
Summary:        Include Files and Libraries mandatory for Development
Group:          TO BE / FILED IN
Requires:       %{name} = %{version}-%{release}

%description devel
This package contains all necessary include files and libraries needed
to develop applications that require these.

%prep
%setup -q

%build
pushd .
cd libA
scons --prefix=%{_prefix}
popd

cmake . -DCMAKE_INSTALL_PREFIX=%{_prefix}

make %{?jobs:-j%jobs}


%install
rm -rf %{buildroot}
pushd .
cd libA
scons --prefix=%{_prefix} --libdir=%{_libdir} --install-sandbox=%{buildroot} install
popd
%make_install

%clean
rm -rf %{buildroot}

%post

%postun


%files
%defattr(-,root,root,-)
%{_libdir}/libA.so
%{_libdir}/LibB.so

%files devel
%defattr(-,root,root,-)
%{_includedir}/*
%{_libdir}/pkgconfig/%{name}.pc
%{_libdir}/pkgconfig/libA.pc
           

LibB CMAKELists.txt: 去除安装libA.so步骤。

CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
PROJECT(libB)

ADD_LIBRARY(${PROJECT_NAME} SHARED src/libB.c)
# 寻找libA.so
FIND_LIBRARY(LibA NAME A PATHS ${CMAKE_SOURCE_DIR}/libA DOC "LibA library")
# 链接libA.so
TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${PKGS_LDFLAGS} ${LibA})
# 安装libA.so
#INSTALL(FILES ${CMAKE_SOURCE_DIR}/libA/libA.so DESTINATION ${LIBDIR})
# 安装libB.so
INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIBDIR})
           

2）编译appC成功。