如何在构建时修改 .dylib 的安装名称
我正在 Mac OS X (10.7 .1).构建过程如下：
$ ./configure --prefix=output
$ make
$ make install
我想在构建时更改生成的共享库的安装名称，并且之后不使用 install_name_tool 。
默认情况下，安装名称<生成的共享库 libgflags.dylib 的 /a> 是输出路径：
$ otool -L ./output/libgflags.dylib
$ ./output/libgflags.dylib:
/tmp/gflags-1.5/output/lib/libgflags.0.dylib (compatibility version 2.0.0, current version 2.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.0.0)
ld(1) 的手册页有一个 -install_name > 选项可以用于在链接时更改动态库的安装名称。
例如，使用虚拟程序：
$ g++ -dynamiclib temp.cc -install_name /tmp/temp.dylib -o temp.dylib
$ otool -L temp.dylib
temp.dylib:
/tmp/temp.dylib (compatibility version 0.0.0, current version 0.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.0.0)
但是，我无法将此命令行选项与 ./configure 脚本一起使用。我尝试手动设置 CFLAGS 变量，但这会导致错误：
$ CFLAGS="-install_name /tmp/desired/location/libgflags.dylib" ./configure
checking for a BSD-compatible install... /opt/local/bin/ginstall -c
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking whether the C compiler works... no
configure: error: in `/Users/vibhav/Code/install_name_test/gflags-1.5':
configure: error: C compiler cannot create executables
那么，我是否可以更改由 configure 生成的 .dylib 的安装名称并make而不使用install_name_tool？
I am building the google-gflags commandline flags library for C++ on Mac OS X (10.7.1). The build process is as such:
$ ./configure --prefix=output
$ make
$ make install
I'd like to change the install name of the generated shared library at build time and not use install_name_tool afterwards.
By default, the install name of the generated shared library, libgflags.dylib, is the output path:
$ otool -L ./output/libgflags.dylib
$ ./output/libgflags.dylib:
/tmp/gflags-1.5/output/lib/libgflags.0.dylib (compatibility version 2.0.0, current version 2.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.0.0)
The man page for ld(1) has a -install_name option which can be used to change the install name of a dynamic library at link-time.
For example, with a dummy program:
$ g++ -dynamiclib temp.cc -install_name /tmp/temp.dylib -o temp.dylib
$ otool -L temp.dylib
temp.dylib:
/tmp/temp.dylib (compatibility version 0.0.0, current version 0.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.0.0)
But, I am unable to use this command line option with the ./configure script. I've tried manually setting the CFLAGS variable, but that results in a error:
$ CFLAGS="-install_name /tmp/desired/location/libgflags.dylib" ./configure
checking for a BSD-compatible install... /opt/local/bin/ginstall -c
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking whether the C compiler works... no
configure: error: in `/Users/vibhav/Code/install_name_test/gflags-1.5':
configure: error: C compiler cannot create executables
So, is it possible for me to change the install name of .dylib generated by configure and make without using install_name_tool?
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通常，通过 g++ 传递链接器参数必须以 -Wl 开头，并且必须用逗号替换空格。因此，如果您想将“-install_name /tmp/temp.dylib”传递给链接器，您将需要调用以下命令：
Generally, passing linker arguments through g++ must be prefaced with -Wl and spaces must be replaced with commas. So, if you want to pass "-install_name /tmp/temp.dylib" to the linker you will need to call this:
一种可能的方法是手动编辑 config.status。但在我尝试这样做之前，
install_name_tool -id救了我的命。one possible approach would be editing the config.status manually. but before I try to do that,
install_name_tool -idsaved my life.