I’m trying to create some zip files with cmake. I’m either using the archive creation incorrectly or there’s a bug because the internal paths of my zip files are always relative paths.
With this directory structure:
:: tree
.
├── CMakeLists.txt
└── dir
├── a
│ └── a.txt
└── b
└── b.txt
And this CMakeLists.txt file:
cmake_minimum_required(VERSION 3.21)
project(
test
LANGUAGES CXX
)
file(GLOB subdirectories LIST_DIRECTORIES true "${CMAKE_CURRENT_SOURCE_DIR}/dir/*")
foreach(subdirectory ${subdirectories})
if(IS_DIRECTORY ${subdirectory})
# Extract the directory name from the path
get_filename_component(directory_name ${subdirectory} NAME)
# set the output file name
set(output_archive "${CMAKE_CURRENT_SOURCE_DIR}/${directory_name}.zip")
message(STATUS "subdirectory: ${subdirectory}")
# create the archive
file(ARCHIVE_CREATE
OUTPUT "${output_archive}"
PATHS
"${subdirectory}"
FORMAT "zip"
)
message(STATUS "Created archive: ${output_archive}")
endif()
endforeach()
I end up with two zip files that cannot be unzipped without telling unzip to remove the relative paths, unless in the build directory. This is a problem since applications like Finder cannot open archives like this.
:: mkdir build && cd build
:: cmake ..
-- The CXX compiler identification is AppleClang 14.0.3.14030022
...
-- Build files have been written to: ...
:: ls ../
CMakeLists.txt a.zip b.zip build dir
:: cd ..
:: zipinfo a.zip
Archive: a.zip
Zip file size: 369 bytes, number of entries: 2
drwxr-xr-x 2.0 unx 0 bx stor 23-Sep-19 16:41 ../dir/a/
-rw-r--r-- 2.0 unx 3 bX defN 23-Sep-19 16:41 ../dir/a/a.txt
2 files, 3 bytes uncompressed, 5 bytes compressed: -66.7%
:: zipinfo b.zip
Archive: b.zip
Zip file size: 369 bytes, number of entries: 2
drwxr-xr-x 2.0 unx 0 bx stor 23-Sep-19 16:41 ../dir/b/
-rw-r--r-- 2.0 unx 3 bX defN 23-Sep-19 16:41 ../dir/b/b.txt
2 files, 3 bytes uncompressed, 5 bytes compressed: -66.7%
:: unzip a.zip
Archive: a.zip
warning: skipped "../" path component(s) in ../dir/a/
warning: skipped "../" path component(s) in ../dir/a/a.txt
replace dir/a/a.txt? [y]es, [n]o, [A]ll, [N]one, [r]ename: A
inflating: dir/a/a.txt
:: cd build
:: unzip ../a.zip
Archive: ../a.zip
warning: skipped "../" path component(s) in ../dir/a/
creating: dir/a/
warning: skipped "../" path component(s) in ../dir/a/a.txt
inflating: dir/a/a.txt
:: ls
CMakeCache.txt CMakeFiles Makefile cmake_install.cmake dir
The issue is that the archive is created with relative paths, as can be seen by the zipinfo output. How do I create the archive without these relative paths?