CMake substitute text in a file generated by a target - windows

I have cmake target which runs a setup.exe on windows which installs a tool using add_custom_target as follows
# TOOL_TEMP_INSTALL_PATH is the installation path which is set earlier in cmake
add_custom_target(
install_tool
COMMAND ${TOOL_TEMP_DIR}/setup.exe /DIR=${TOOL_TEMP_INSTALL_PATH}
)
After the installation, I want to replace text in a configuration file located at ${TOOL_TEMP_INSTALL_PATH}/tool.ini replacing a line of text "LICENSE_FILE=Enter License server" with "LICENSE_FILE=30309#server"
Following commands will achieve this but this needs to be run after install_tool target is built.
file(READ "${TOOL_TEMP_INSTALL_PATH}/tool.ini" filedata)
string(REGEX REPLACE "LICENSE_FILE=Enter License server here"
"LICENSE_FILE=30309#server" filedata "${filedata}")
file(WRITE "${TOOL_TEMP_INSTALL_PATH}/tool.ini" "${filedata}")
How can I add these commands as a dependency to install_tool? Or is there a better way to achieve this on windows?

Since you want to run two things in order as part of the same target, you can use multiple COMMAND entries in the same target. The difficulty is that COMMAND can't handle CMake code, but only system commands. The typical solution is to call CMake in a subshell on a script file:
COMMAND ${CMAKE_COMMAND} -P path_to_script
So, place your file modification commands in a file in your source tree called license-install.cmake, and add another COMMAND to your add_custom_target
Hint: You might consider add_custom_command instead, so you can specify a file in the installed tree as a dependency. This will allow CMake to see the installed tool as a build product, and to skip the install step if the tool is already installed. You'll still need an add_custom_target with a dependency on your command output to hook it in correctly.

Related

How to change CMAKE_INSTALL_PREFIX in a generated file at installation

For backward compatibility with older pre-cmake packages I need cmake to generate a pkg-config like script foo_config to install with my library. The library user can then execute this script with e.g.
foo-config --prefix
to find a package prefix. Other options are --cflags etc. Right now I can do this by creating a file foo-config.cmake.in which has a substitution
#!/bin/bash
prefix=#CMAKE_INSTALL_PREFIX#
#
# more scripting logic
and I can create my actual script using in CMakeLists.txt the lines
configure_file(bin/foo-config.cmake.in bin/foo-config)
install(FILE ${CMAKE_CURRENT_BINARY_DIR}/bin/foo-config
PERMISSIONS OWNER_EXECUTE OWNER_READ
DESTINATION bin)
This works fine for installing into /usr/local or if the user specifies -DCMAKE_INSTALL_PREFIX=... at configuration time.
However CMake also allows installation via:
cmake --install . --prefix=/foo/bar
where the /foo/bar path will override the CMAKE_INSTALL_PREFIX. At this time my script is already configured and the previous CMAKE_INSTALL_PREFIX will have already been substituted. Just installing will not replace my existing substitution for #CMAKE_INSTALL_PREFIX#. Is there a facility in CMake for doing some kind of path replacement in a file at install time that I can use so that the prefix will be set correctly in the installed file?

How can I extract the environment variables used when building a recipe in Yocto?

I am working on a kernel module for a project using Yocto Linux (version 1.3). I want to use the kernel headers and the compiler and libraries from my Yocto project, but develop the kernel module without needing to run bitbake every time. My initial solution to this was to execute the devshell task and extract the environment variables using something like this:
bitbake mykernel -c devshell
Then in the new xterm window bitbake opened for me:
env | sed 's/\=\(.*\)/\="\1"/' > buildenv #put quotes around r-values in env listing
^D #(I leave the devshell)
Then copy this to my development directory and source it before running make with all of its options
KERNEL_PATH=/mypathto/build/tmp/sysroots/socfpga_cyclone5/usr/src/kernel
source ./buildenv && make -C $KERNEL_PATH V=1 M=`pwd` \
ARCH=arm CROSS-COMPILE=arm-linux-gnueabihf- \
KERNEL_VERSION=3.13.0-00298-g3c7cbb9 \
CC="arm-linux-gnueabihf-gcc -mno-thumb-interwork -marm" \
LD=arm-linux-gnueabihf-ld AR=arm-linux-gnueabihf-ar
Now to my questions:
Am I going about this completely wrong? What is the recommended way to cross-develop kernel modules? I am doing it this way because I don't want to open a bitbake devshell and do my code development in there every time.
This sort of works (I can compile working modules) but the make script gives me an error message saying that the kernel configuration is invalid. I have also tried this with KERNEL_PATH set to the the kernel package git directory (build/tmp/work///git (which contains what appears to be a valid .config file) and I get a similar error.
How can I extract the env without needing to open a devshell? I would like to write a script that extracts it so my coworkers don't have to do it manually. The devshell command opens a completely separate Xterm window, which rather dampens its scriptability...
the sdk installer is what you are looking for:
bitbake your-image -c populate_sdk
then, from your build directory go to tmp/deploy/sdk
and execute the generated shell script.
this script will allow you to generate and install an sdk.
Not only the sdk will allow you to (cross) compile your kernel by providing the needed environment variables and tools, but it will also provide a sysroot + a standalone toolchain to help you easily (and by easily I mean really easily) crosscompile applications with the autotools (as long as you provide Makefile.am and configure.ac)
just source the environment-setup-* file, got to your kernel directory and compile.
Or, for application developpment based on the autotools,
go to the folder containing your project (sources + Makefile.am and configure.ac)
and do:
libtoolize --automake
aclocal
autoconf
automake -a
now your project is ready for compilation:
./configure $CONFIGURE_FLAGS
make
make install DESTDIR=path/to/destination/dir
If you're after a quick hack, instead of Ayman's more complete solution, the scripts run to complete each build stage are available in the directory:
./build/tmp/work/{target_platform}/{package}/{version}/temp/run.do_{build_stage}
These scripts can be run standalone from the ./temp/ directory, and contain all of the environment variables required.

configure command not found cygwin

This question has been asked many time but I am not able to resolve the problem from them so I am asking
I had installed Cygwin a few days ago.I tried using ./configure command but it says
-bash: ./configure: No such file or directory
I tried using
where configure
but I got the output
INFO: Could not find files for the given pattern(s).
then I tried grep configureand I got this output
/etc/bash_completion.d/configure
/usr/i686-pc-cygwin/sys-root/usr/share/libtool/libltdl/configure
/usr/share/ELFIO/configure
/usr/share/libtool/libltdl/configure
I tried to export the path and then run the ./configure but it also didn't worked.
I find no executable file named as configure in my cygwin bin directory.
Does it mean that I have to add configure file manually?How can I correct it?
NOTE :- I had also tried sh configure but it also didn't worked
If a software project is set up to be built using autoconf, that tool generates a script canonically called configure. It queries the system for various parameters that are subsequently used in the build, and is specific to the software package to be built. Different software projects have different configure scripts. They are all called configure, but their contents are not the same.
So, to actually build such a software project once that script was set up (usually done by the maintainers when packaging the source tarball for distribution), you call:
tar xzf <tarball>.gz # or xjf <tarball>.bz2 or whatever
cd <sourcedir> # the one you just untarred
./configure
make
make install
Note the prefix ./, which means "located in this directory" (i.e. the top directory of that project's source tree).
Actually, the better procedure is the so-called "out-of-tree build", when you set up a different directory for the binaries to be built in, so the source tree remains unmodified:
tar xzf <tarball>.gz # or xjf <tarball>.bz2 or whatever
mkdir builddir
cd builddir
../<sourcedir>/configure
make
make install
So, there is supposed to be no configure executable in your PATH, you are supposed to call the script of that name from the source tree you are trying to build from.
If I correctly understood...
Configure is not an application that should be installed on your system, but script that should be delivered with source code to prepare for make command. File named configure should be in the main directory of source code.
I understand that this is an old question. However many might find this solution helpful.
Normally we use the make command to compile a downloaded source in cygwin. In many cases it contains a autogen.sh file. Running that file with
bash autogen.sh
will in many case solve the problem. At least it solved my issue and i could then use the make command

How do I use CPACK_INSTALL_COMMANDS?

I'm creating a Linux tgz self-extracting installer using CPack and I'd like the installer to run a script or sequence of commands after all files have been installed. CPack documentation contains the following guidance:
CPACK_INSTALL_COMMANDS Extra commands to install components.
I set this variable in my CMakeLists.txt file and I see it set in the resulting CPackConfig.cmake file, but the commands I embed in this variable do not appear anywhere in the final .sh install script. What am I missing?
You're not missing anything, that's simply not how the CPACK_INSTALL_COMMANDS variable works.
On a typical project, CPack does a "make install" into a temporary location, in order to build the final installer based on the "make install" tree. The CPACK_INSTALL_COMMANDS variable is meant to be set for projects that would rather run some other command sequence, instead of the typical "make install" in order to produce the install tree.
So, CPack should be running your commands as it generates the package. It will not run your commands on the end user's machine at the end of him/her running the generated installation script...
There are per-generator ways of running installed executables and/or scripts at the end of the end user installation, but it will require some customization on your part. In this case, I'd recommend attempting to override the CPack.STGZ_Header.sh.in input file that is used when CPack generates the STGZ self-extracting script. Customize that file and add your calls to the bottom of it, above the line:
exit 0
To override the file, provide your own copy of it in your source tree, perhaps in a ${CMAKE_CURRENT_SOURCE_DIR}/CMake directory, and then in your CMakeLists.txt file, add:
set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/CMake ${CMAKE_MODULE_PATH})
(Actually, as I'm writing this, I'm wondering if that's sufficient, or if the module path also needs to be set at the time that CPack runs... Try this, and let us know if your customization gets used by CPack or not. If not, I'll investigate a bit further and add some more advice here.)

How to install SWIG?

Noob question ahead...
I'm trying to install SWIG on Windows. According to the INSTALL document, I have to
cd to the directory containing the package's source code and type ./configure to configure the package for your system.
I tried the command in both the root directory and in the /CCache directory (these are the only ones that have the configure and configure.in files), however, the shell reports back that
C:\swigwin-2.0.4>./configure
'.' is not recognized as an internal or external command,
operable program or batch file.
What am I missing?
no installation is needed. you just have to set the environment variable to point to the "swig" 's executable which is under the root directory of swig
On the SWIG site, you can download for example the swigwin-2.0.7 zip directory for windows's swig. unzip it in a directory of your choice for example on "C:\Program Files" directory if you want. After this, you have the swig executable in the "C:\Program Files\swigwin-2.0.7" directory: "C\Program Files\swigwin-2.0.7\swig"
you have to set now the environment variable "path" to point to this swig exec: add for this the "C:\Program Files\swigwin-2.0.7" path to the "path"variable according to my example; that is all you need to use swig on windows. You can now play with swig so, open a prompt "cmd" and just type "swig --help" on this prompt you can see a list of the differents options you can use with swig.
If you d'ont have visual c++, you can use for example codeblock, that is my case so the link below could be a help for you : http://wiki.codeblocks.org/index.phptitle=Adding_support_for_non_C/C%2B%2B_files_to_the_build_system
The page http://www.swig.org/download.html has a specific download for Windows with a pre-built version of swig.exe. You can download it and avoid the hassle of compiling swig by yourself.
If you really need to, you can consult the file Doc/Manual/Windows.html that contain Windows-specific instructions to build SWIG.
Finally, to answer your specific question, the syntax
./configure
is a UNIX-style command that means 'execute the program named configure in the current directory' (the dot)
On Windows, you would type
.\configure
or even simpler, as all files are executable on Windows, only
configure
... BUT this will not work as the said 'configure' script is a bash script that will not run in a Windows shell.
Download Miniconda.
Then follow this guide and do: conda install -c anaconda swig

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