How to link Zlib with Cmake
0
I am trying to link my file with the zlib libray but still get: undefined reference to `deflateInit_'.
I am currently using CLion, have downloaded the zLib file from the homepage and added it into the project. This is how my CmakeLists.txt looks like
cmake_minimum_required(VERSION 3.10) project(GzipTest)
set(CMAKE_CXX_STANDARD 11)
include_directories(ZLIB zlib-1.2.11)
add_executable(GzipTest main.cpp zlib-1.2.11/zlib.h)
And the code (Copying from the zpipe.c):
include "iostream"
include "zlib.h"
include "iostream"
define CHUNK 1639
FILE *fp;
int def(FILE *source, FILE *dest, int level)
int ret, flush;
unsigned have;
z_stream strm;
unsigned char in[CHUNK];
unsigned char out[CHUNK];
// Allocate Deflate state
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
ret = deflateInit(&strm, level);
if (ret != Z_OK)
return ret;
int main()
fp = fopen("inputFile.txt", "r");
if (fp == nullptr)
perror("Could not open data");
exit(EXIT_FAILURE);
def(fp, fp, 1);
What could be missing?
Thanks in advance
c cmake gzip zlib
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
asked Nov 14 '18 at 10:52
AKJAKJ
529
add a comment |
0
I am trying to link my file with the zlib libray but still get: undefined reference to `deflateInit_'.
I am currently using CLion, have downloaded the zLib file from the homepage and added it into the project. This is how my CmakeLists.txt looks like
cmake_minimum_required(VERSION 3.10) project(GzipTest)
set(CMAKE_CXX_STANDARD 11)
include_directories(ZLIB zlib-1.2.11)
add_executable(GzipTest main.cpp zlib-1.2.11/zlib.h)
And the code (Copying from the zpipe.c):
include "iostream"
include "zlib.h"
include "iostream"
define CHUNK 1639
FILE *fp;
int def(FILE *source, FILE *dest, int level)
int ret, flush;
unsigned have;
z_stream strm;
unsigned char in[CHUNK];
unsigned char out[CHUNK];
// Allocate Deflate state
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
ret = deflateInit(&strm, level);
if (ret != Z_OK)
return ret;
int main()
fp = fopen("inputFile.txt", "r");
if (fp == nullptr)
perror("Could not open data");
exit(EXIT_FAILURE);
def(fp, fp, 1);
What could be missing?
Thanks in advance
c cmake gzip zlib
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
asked Nov 14 '18 at 10:52
AKJAKJ
529
Have you compiled zlib? Where is libzlib.so or similar?
– Kamil Cuk
Nov 14 '18 at 10:55
You don't build with the zlib source file, or link with the zlib library.
– Some programmer dude
Nov 14 '18 at 10:56
How to compile zlib?
– AKJ
Nov 14 '18 at 10:57
You have doanloaded a package, there is a README in it with the instructions on how to build it on all platforms. You can also directly get a prebuilt package.
– Matthieu Brucher
Nov 14 '18 at 10:59
Matthieu, the readme: # To install libz.a, zconf.h and zlib.h in the system directories, type: # # make install -fwin32/Makefile.gcc.
– AKJ
Nov 14 '18 at 11:23
add a comment |
0
0
0
I am trying to link my file with the zlib libray but still get: undefined reference to `deflateInit_'.
I am currently using CLion, have downloaded the zLib file from the homepage and added it into the project. This is how my CmakeLists.txt looks like
cmake_minimum_required(VERSION 3.10) project(GzipTest)
set(CMAKE_CXX_STANDARD 11)
include_directories(ZLIB zlib-1.2.11)
add_executable(GzipTest main.cpp zlib-1.2.11/zlib.h)
And the code (Copying from the zpipe.c):
include "iostream"
include "zlib.h"
include "iostream"
define CHUNK 1639
FILE *fp;
int def(FILE *source, FILE *dest, int level)
int ret, flush;
unsigned have;
z_stream strm;
unsigned char in[CHUNK];
unsigned char out[CHUNK];
// Allocate Deflate state
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
ret = deflateInit(&strm, level);
if (ret != Z_OK)
return ret;
int main()
fp = fopen("inputFile.txt", "r");
if (fp == nullptr)
perror("Could not open data");
exit(EXIT_FAILURE);
def(fp, fp, 1);
What could be missing?
Thanks in advance
c cmake gzip zlib
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
asked Nov 14 '18 at 10:52
AKJAKJ
529
I am trying to link my file with the zlib libray but still get: undefined reference to `deflateInit_'.
I am currently using CLion, have downloaded the zLib file from the homepage and added it into the project. This is how my CmakeLists.txt looks like
cmake_minimum_required(VERSION 3.10) project(GzipTest)
set(CMAKE_CXX_STANDARD 11)
include_directories(ZLIB zlib-1.2.11)
add_executable(GzipTest main.cpp zlib-1.2.11/zlib.h)
And the code (Copying from the zpipe.c):
include "iostream"
include "zlib.h"
include "iostream"
define CHUNK 1639
FILE *fp;
int def(FILE *source, FILE *dest, int level)
int ret, flush;
unsigned have;
z_stream strm;
unsigned char in[CHUNK];
unsigned char out[CHUNK];
// Allocate Deflate state
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
ret = deflateInit(&strm, level);
if (ret != Z_OK)
return ret;
int main()
fp = fopen("inputFile.txt", "r");
if (fp == nullptr)
perror("Could not open data");
exit(EXIT_FAILURE);
def(fp, fp, 1);
What could be missing?
Thanks in advance
c cmake gzip zlib
c cmake gzip zlib
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
asked Nov 14 '18 at 10:52
AKJAKJ
529
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
asked Nov 14 '18 at 10:52
AKJAKJ
529
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
edited Nov 14 '18 at 10:58
Matthieu Brucher
16.3k32143
16.3k32143
asked Nov 14 '18 at 10:52
AKJAKJ
529
asked Nov 14 '18 at 10:52
AKJAKJ
529
asked Nov 14 '18 at 10:52
AKJAKJ
529
529
Have you compiled zlib? Where is libzlib.so or similar?
– Kamil Cuk
Nov 14 '18 at 10:55
You don't build with the zlib source file, or link with the zlib library.
– Some programmer dude
Nov 14 '18 at 10:56
How to compile zlib?
– AKJ
Nov 14 '18 at 10:57
You have doanloaded a package, there is a README in it with the instructions on how to build it on all platforms. You can also directly get a prebuilt package.
– Matthieu Brucher
Nov 14 '18 at 10:59
Matthieu, the readme: # To install libz.a, zconf.h and zlib.h in the system directories, type: # # make install -fwin32/Makefile.gcc.
– AKJ
Nov 14 '18 at 11:23
add a comment |
Have you compiled zlib? Where is libzlib.so or similar?
– Kamil Cuk
Nov 14 '18 at 10:55
You don't build with the zlib source file, or link with the zlib library.
– Some programmer dude
Nov 14 '18 at 10:56
How to compile zlib?
– AKJ
Nov 14 '18 at 10:57
You have doanloaded a package, there is a README in it with the instructions on how to build it on all platforms. You can also directly get a prebuilt package.
– Matthieu Brucher
Nov 14 '18 at 10:59
Matthieu, the readme: # To install libz.a, zconf.h and zlib.h in the system directories, type: # # make install -fwin32/Makefile.gcc.
– AKJ
Nov 14 '18 at 11:23
Have you compiled zlib? Where is libzlib.so or similar?
– Kamil Cuk
Nov 14 '18 at 10:55
Have you compiled zlib? Where is libzlib.so or similar?
– Kamil Cuk
Nov 14 '18 at 10:55
You don't build with the zlib source file, or link with the zlib library.
– Some programmer dude
Nov 14 '18 at 10:56
You don't build with the zlib source file, or link with the zlib library.
– Some programmer dude
Nov 14 '18 at 10:56
How to compile zlib?
– AKJ
Nov 14 '18 at 10:57
How to compile zlib?
– AKJ
Nov 14 '18 at 10:57
You have doanloaded a package, there is a README in it with the instructions on how to build it on all platforms. You can also directly get a prebuilt package.
– Matthieu Brucher
Nov 14 '18 at 10:59
You have doanloaded a package, there is a README in it with the instructions on how to build it on all platforms. You can also directly get a prebuilt package.
– Matthieu Brucher
Nov 14 '18 at 10:59
Matthieu, the readme: # To install libz.a, zconf.h and zlib.h in the system directories, type: # # make install -fwin32/Makefile.gcc.
– AKJ
Nov 14 '18 at 11:23
Matthieu, the readme: # To install libz.a, zconf.h and zlib.h in the system directories, type: # # make install -fwin32/Makefile.gcc.
– AKJ
Nov 14 '18 at 11:23
add a comment |
1 Answer
1
active
oldest
votes
1
You have to link against zlib.
If you used:
find_package(ZLIB)
Then you should have:
target_link_libraries(GzipTest $ZLIB_LIBRARIES)
Also don't add the headers to your source files:
add_executable(GzipTest main.cpp)
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
Should i replace $ZLIB_LIBRARIES with something? I get : CMake Error at CMakeLists.txt:9 (target_link_library): Unknown CMake command "target_link_library".
– AKJ
Nov 14 '18 at 10:59
That's assuming that you have the package built, and that you are setting the paths to find zlib for cmake properly. And yes, fixed a type, should be librarIES, not librarY.
– Matthieu Brucher
Nov 14 '18 at 11:00
@AKJ which version of cmake are you using?
– Philipp
Nov 14 '18 at 11:01
I am really a noob at this. Can you please instruct me on what to do?
– AKJ
Nov 14 '18 at 11:02
in the cmake-gui (or ccmake on Linux, but in that case, you should already have a zlib package with the system), you need to fill the path to zlib as the errors that find_package indicates.
– Matthieu Brucher
Nov 14 '18 at 11:04
|
show 1 more comment
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You have to link against zlib.
If you used:
find_package(ZLIB)
Then you should have:
target_link_libraries(GzipTest $ZLIB_LIBRARIES)
Also don't add the headers to your source files:
add_executable(GzipTest main.cpp)
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
Should i replace $ZLIB_LIBRARIES with something? I get : CMake Error at CMakeLists.txt:9 (target_link_library): Unknown CMake command "target_link_library".
– AKJ
Nov 14 '18 at 10:59
That's assuming that you have the package built, and that you are setting the paths to find zlib for cmake properly. And yes, fixed a type, should be librarIES, not librarY.
– Matthieu Brucher
Nov 14 '18 at 11:00
@AKJ which version of cmake are you using?
– Philipp
Nov 14 '18 at 11:01
I am really a noob at this. Can you please instruct me on what to do?
– AKJ
Nov 14 '18 at 11:02
in the cmake-gui (or ccmake on Linux, but in that case, you should already have a zlib package with the system), you need to fill the path to zlib as the errors that find_package indicates.
– Matthieu Brucher
Nov 14 '18 at 11:04
|
show 1 more comment
1
You have to link against zlib.
If you used:
find_package(ZLIB)
Then you should have:
target_link_libraries(GzipTest $ZLIB_LIBRARIES)
Also don't add the headers to your source files:
add_executable(GzipTest main.cpp)
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
Should i replace $ZLIB_LIBRARIES with something? I get : CMake Error at CMakeLists.txt:9 (target_link_library): Unknown CMake command "target_link_library".
– AKJ
Nov 14 '18 at 10:59
That's assuming that you have the package built, and that you are setting the paths to find zlib for cmake properly. And yes, fixed a type, should be librarIES, not librarY.
– Matthieu Brucher
Nov 14 '18 at 11:00
@AKJ which version of cmake are you using?
– Philipp
Nov 14 '18 at 11:01
I am really a noob at this. Can you please instruct me on what to do?
– AKJ
Nov 14 '18 at 11:02
in the cmake-gui (or ccmake on Linux, but in that case, you should already have a zlib package with the system), you need to fill the path to zlib as the errors that find_package indicates.
– Matthieu Brucher
Nov 14 '18 at 11:04
|
show 1 more comment
1
1
1
You have to link against zlib.
If you used:
find_package(ZLIB)
Then you should have:
target_link_libraries(GzipTest $ZLIB_LIBRARIES)
Also don't add the headers to your source files:
add_executable(GzipTest main.cpp)
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
You have to link against zlib.
If you used:
find_package(ZLIB)
Then you should have:
target_link_libraries(GzipTest $ZLIB_LIBRARIES)
Also don't add the headers to your source files:
add_executable(GzipTest main.cpp)
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
edited Nov 14 '18 at 11:00
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
answered Nov 14 '18 at 10:56
Matthieu BrucherMatthieu Brucher
16.3k32143
16.3k32143
Should i replace $ZLIB_LIBRARIES with something? I get : CMake Error at CMakeLists.txt:9 (target_link_library): Unknown CMake command "target_link_library".
– AKJ
Nov 14 '18 at 10:59
That's assuming that you have the package built, and that you are setting the paths to find zlib for cmake properly. And yes, fixed a type, should be librarIES, not librarY.
– Matthieu Brucher
Nov 14 '18 at 11:00
@AKJ which version of cmake are you using?
– Philipp
Nov 14 '18 at 11:01
I am really a noob at this. Can you please instruct me on what to do?
– AKJ
Nov 14 '18 at 11:02
in the cmake-gui (or ccmake on Linux, but in that case, you should already have a zlib package with the system), you need to fill the path to zlib as the errors that find_package indicates.
– Matthieu Brucher
Nov 14 '18 at 11:04
|
show 1 more comment
Should i replace $ZLIB_LIBRARIES with something? I get : CMake Error at CMakeLists.txt:9 (target_link_library): Unknown CMake command "target_link_library".
– AKJ
Nov 14 '18 at 10:59
That's assuming that you have the package built, and that you are setting the paths to find zlib for cmake properly. And yes, fixed a type, should be librarIES, not librarY.
– Matthieu Brucher
Nov 14 '18 at 11:00
@AKJ which version of cmake are you using?
– Philipp
Nov 14 '18 at 11:01
I am really a noob at this. Can you please instruct me on what to do?
– AKJ
Nov 14 '18 at 11:02
in the cmake-gui (or ccmake on Linux, but in that case, you should already have a zlib package with the system), you need to fill the path to zlib as the errors that find_package indicates.
– Matthieu Brucher
Nov 14 '18 at 11:04
Should i replace $ZLIB_LIBRARIES with something? I get : CMake Error at CMakeLists.txt:9 (target_link_library): Unknown CMake command "target_link_library".
– AKJ
Nov 14 '18 at 10:59
Should i replace $ZLIB_LIBRARIES with something? I get : CMake Error at CMakeLists.txt:9 (target_link_library): Unknown CMake command "target_link_library".
– AKJ
Nov 14 '18 at 10:59
That's assuming that you have the package built, and that you are setting the paths to find zlib for cmake properly. And yes, fixed a type, should be librarIES, not librarY.
– Matthieu Brucher
Nov 14 '18 at 11:00
That's assuming that you have the package built, and that you are setting the paths to find zlib for cmake properly. And yes, fixed a type, should be librarIES, not librarY.
– Matthieu Brucher
Nov 14 '18 at 11:00
@AKJ which version of cmake are you using?
– Philipp
Nov 14 '18 at 11:01
@AKJ which version of cmake are you using?
– Philipp
Nov 14 '18 at 11:01
I am really a noob at this. Can you please instruct me on what to do?
– AKJ
Nov 14 '18 at 11:02
I am really a noob at this. Can you please instruct me on what to do?
– AKJ
Nov 14 '18 at 11:02
in the cmake-gui (or ccmake on Linux, but in that case, you should already have a zlib package with the system), you need to fill the path to zlib as the errors that find_package indicates.
– Matthieu Brucher
Nov 14 '18 at 11:04
in the cmake-gui (or ccmake on Linux, but in that case, you should already have a zlib package with the system), you need to fill the path to zlib as the errors that find_package indicates.
– Matthieu Brucher
Nov 14 '18 at 11:04
|
show 1 more comment
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Have you compiled zlib? Where is libzlib.so or similar?
– Kamil Cuk
Nov 14 '18 at 10:55
You don't build with the zlib source file, or link with the zlib library.
– Some programmer dude
Nov 14 '18 at 10:56
How to compile zlib?
– AKJ
Nov 14 '18 at 10:57
You have doanloaded a package, there is a README in it with the instructions on how to build it on all platforms. You can also directly get a prebuilt package.
– Matthieu Brucher
Nov 14 '18 at 10:59
Matthieu, the readme: # To install libz.a, zconf.h and zlib.h in the system directories, type: # # make install -fwin32/Makefile.gcc.
– AKJ
Nov 14 '18 at 11:23