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cmake configure_file does not expand mylib.pc.in correctly


cmake configure_file does not expand mylib.pc.in correctly

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cmake configure_file does not expand mylib.pc.in correctly
Tag : cmake , By : Marianisho
Date : January 11 2021, 05:14 PM

help you fix your problem Construction ${prefix} is a variable reference both in CMake scripting and in .pc file scripting. So you need to choose at which stage you want to expand this reference:
# File: CMakeLists.txt
set(prefix "$ENV{HOME}/xcompiled-root/")
configure_file(mylib.pc.in mylib.pc)

# File: mylib.pc.in
exe_prefix=${prefix}
libdir=${prefix}/lib
includedir=${prefix}/include

exe_prefix=/home/myusr/xcompiled-root/
libdir=/home/myusr/xcompiled-root/lib
includedir=/home/myusr/xcompiled-root/include

# File: mylib.pc.in
prefix=$ENV{HOME}/xcompiled-root/
exe_prefix=$${}{prefix}
libdir=$${}{prefix}/lib
includedir=$${}{prefix}/include

# File: CMakeLists.txt
configure_file(mylib.pc.in mylib.pc)

prefix=/home/myusr/xcompiled-root/
exe_prefix=${prefix}
libdir=${prefix}/lib
includedir=${prefix}/include

# File: CMakeLists.txt
# Construction @VAR@ doesn't support reference to environment variable.
# So prepare pure CMake variable which contains $ENV{HOME}.
set(user_home "$ENV{HOME}")
configure_file(mylib.pc.in mylib.pc @ONLY)

prefix=@user_home@/xcompiled-root/
exe_prefix=${prefix}
libdir=${prefix}/lib
includedir=${prefix}/include

Name: @PROJECT_NAME@
Description: @PROJECT_DESCRIPTION@
Version: @PROJECT_VERSION@

Requires:
Libs: -L@{libdir} -lpthread -lrt -ldl  -lm
Cflags: -I@{includedir}

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CMake configure_file replace ON/OFF with 1/0

Tag : cmake , By : Longchao Dong
Date : March 29 2020, 07:55 AM
will help you Suppose I have two libraries ABC, XYZ and two variables ABC_FOUND XYZ_FOUND in CMakeLists.txt. In a config.h.in file, I have the following lines , Define ABC_FOUND to either 0 or 1 with 
#cmakedefine01 @ABC_FOUND@

CMake and configure_file: what if I need $ONLY instead of @ONLY?

Tag : cmake , By : Pierre LeBoo
Date : March 29 2020, 07:55 AM
it fixes the issue At least I found a solution that works, even if I'm not sure that's the best approach ever.
I leave it as an answer for future readers in case no solutions come up.
@DontTouchMe@/${PROJECT_NAME}

@@Workaround@DontTouchMe@Workaround@@/${PROJECT_NAME}

@DontTouchMe@/TheNameOfTheProject

CMake Error (configure_file): configure_file error configuring file

Tag : cmake , By : mansoor
Date : March 29 2020, 07:55 AM
around this issue I am working on a project on c++ and need to execute a CMakeLists.txt file to run it. I installed cmake, doxygen, cmake-curses-gui and make using sudo. Then I tried running the file. , The error is clear
configure_file(${PROJECT_SOURCE_DIR}/doc/Doxyfile.in ${PROJECT_SOURCE_DIR}/doc/Doxyfile @ONLY)

CMake : different configure_file() for each target

Tag : c , By : kbrust
Date : March 29 2020, 07:55 AM
To fix the issue you can do The command configure_file creates a "real" file: it has the same content for each target.
However, the created file may contain #ifdef (or other conditional statements), so its interpretation may differ for different target.
#ifndef TEST
#define MY_A 10    
#endif
#ifdef PINK
#define MY_A 20
#endif

add_executable(FirstTarget ...)
# When "config.h" will be included into this target, it will use "PINK" branch.
target_compile_definitions(FirstTarget PRIVATE PINK)

add_executable(SecondTarget ...)
# When "config.h" will be included into this target, it will use "TEST" branch.
target_compile_definitions(FirstTarget PRIVATE TEST)

CMake: Is it possible to run CONFIGURE_FILE after each make?

Tag : makefile , By : lwl_seu
Date : March 29 2020, 07:55 AM
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