厚绑定动态库:未定义的引用

Question

到目前为止，我在Linux Mint系统上做了什么：

1. 编写到GSL库的精简绑定
2. 在薄装订的基础上编写厚装订
3. 为1编写一个测试程序
4. 为2编写一个测试程序

当我创建静态库时，一切都很好。但是，在创建动态库时，请编译4。带有

gprbuild -P test_odeiv2_dyn

获取未定义的引用：

Compile
[Ada]          test_odeiv2.adb
[Ada]          odeiv2_aux.adb
[Ada]          integration.adb
[Ada]          odeiv2.adb
Build Libraries
[gprlib]       gsl.lexch
[link library] libgsl.so
Bind
[gprbind]      test_odeiv2.bexch
[Ada]          test_odeiv2.ali
Link
[link]         test_odeiv2.adb
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_driver_apply'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rk4imp'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_msbdf'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_bsimp'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rkf45'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rk1imp'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rk4'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_driver_free'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_strerror'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rkck'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_msadams'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_driver_alloc_y_new'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rk2imp'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_integration_qng'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rk8pd'
/usr/bin/ld: /home/frank/Lib/Ada/Num/GSL/lib//libgsl.so: undefined reference to `gsl_odeiv2_step_rk2'
collect2: error: ld returned 1 exit status
gprbuild: link of test_odeiv2.adb failed
gprbuild: failed command was: /usr/bin/gnatgcc test_odeiv2.o b__test_odeiv2.o -L/home/frank/Lib/Ada/Num/GSL/lib/ -lgsl -L/home/frank/Lib/Ada/Num/GSL/Thin/lib/ -lgsl_thin_dyn -L/usr/lib/x86_64-linux-gnu -lgsl -lgslcblas -L/usr/lib/x86_64-linux-gnu -lgsl -lgslcblas -L/home/frank/Lib/Ada/Num/Tests/Test_GSL/obj_dyn/ -L/home/frank/Lib/Ada/Num/Tests/Test_GSL/obj_dyn/ -L/home/frank/Lib/Ada/Num/GSL/lib/ -L/home/frank/Lib/Ada/Num/GSL/Thin/lib/ -L/usr/lib/gcc/x86_64-linux-gnu/9/adalib/ -shared-libgcc -lgnarl-9 -lgnat-9 -lrt -lpthread -lrt -ldl -Wl,-rpath-link,/usr/lib/gcc/x86_64-linux-gnu/9//adalib -Wl,-z,origin,-rpath,$ORIGIN/../..//GSL/lib:$ORIGIN/../..//GSL/Thin/lib:/usr/lib/x86_64-linux-gnu:$ORIGIN//obj_dyn:/usr/lib/gcc/x86_64-linux-gnu/9/adalib:/usr/lib64:/usr/lib -o /home/frank/Lib/Ada/Num/Tests/Test_GSL//test_odeiv2_dyn

我缺少什么

我的项目文件是：

1.

library project GSL_Thin_Dyn is
version:= "1";
for Source_Dirs use ("src", "src/matrix");
for Library_Dir use "lib";
for Object_Dir use "obj_rel";
for Library_Name use "gsl_thin_dyn";
for Library_Kind use "relocatable";
for Library_Version use "libgsl_thin.so." & version;
for Externally_Built use "false";
package Linker is
for Linker_Options use ("-L/usr/lib/x86_64-linux-gnu", "-lgsl", "-lgslcblas");
end Linker;
end GSL_Thin_Dyn;

with "Thin/gsl_thin_dyn";
library project GSL_dyn is
version:= "1";

for Source_Dirs use (".");
for Object_Dir use "obj_dyn";
for Library_Dir use "lib";
for Library_Name use "gsl";
for Library_Kind use "relocatable";
for Library_Version use "libgsl.so." & version;
for Externally_Built use "false";
package Linker is
for Linker_Options use ("-L/usr/lib/x86_64-linux-gnu", "-lgsl", "-lgslcblas");
end Linker;
end GSL_dyn;

with "../../../Gen/gen_shared";
with "../../GSL/Thin/gsl_thin_dyn";
project Test_Odeiv2_Thin_Dyn is
for Source_Dirs use (".");
case gen_shared.mode is
when "debug"  => for Object_Dir use "obj_dyn";
when "release"    => for Object_Dir use "obj_dyn/release";
when others   => null;
end case;
for Exec_Dir use ".";
for Main use ("test_odeiv2_thin.adb");
package Builder is
for Executable ("test_odeiv2_thin.adb") use "test_odeiv2_thin_dyn";
end Builder;
end Test_Odeiv2_Thin_Dyn;

with "../../../Gen/gen_shared";
with "../../GSL/gsl_dyn";

project Test_Odeiv2_Dyn is

for Source_Dirs use (".");
case gen_shared.mode is
when "debug"  => for Object_dir use "obj_dyn";
when "release"    => for Object_Dir use "obj_dyn/release";
end case;
for Exec_Dir use ".";
for Main use ("test_odeiv2.adb");

package Linker is
for Linker_Options use ("-L/usr/lib/x86_64-linux-gnu", "-lgsl", "-lgslcblas");
end Linker;

package Builder is
for Executable ("test_odeiv2.adb") use "test_odeiv2_dyn";
end Builder;

end Test_Odeiv2_Dyn;

Answer 1

您将厚包装器库命名为gsl。正在包装的库也被命名为gsl。在内部，这将导致链接器获得-lgsl两次，并且这两次都将被解析为厚包装。这就是为什么它缺少原始库中的符号。

更改厚包装的Library_Name以解决此问题。