Mixing
Sort version strings in CMake
I am converting a qmake project to cmake, and I am able to get it work, except the part that equivalent to !versionAtLeast(QT_VERSION, 5.11): error("Use at least Qt version 5.11".
The issue here is that I am currently using a user-supplied variable -DQt5_PREFIX=/path/to/Qt5/prefix to inform CMake the location of the Qt libs. In macOS, this is /Applications/Qt5/5.xx.x/clang_64 by default.
What I would like to achieve in my cmake scripts is a function that works as the following:
set(Qt_ROOT "/Applications/Qt")
GetQt5Prefix(Qt5_PREFIX ${Qt_ROOT} version_spec)
message("use Qt5 from ${Qt5_PREFIX}")
# suppose that in /Applications/Qt,
# I have three Qt: 5.11.2, 5.10.3 5.12.1
# the above will print "use Qt5 from"
# 5.12.1 if version_spec is 5
# 5.11.2 if version_spec is 5.11
# empty if version_spec is 5.10.1
From what I've got so far, I would image this function should do
- glob to find all subdirectories that looks like version string within Qt5_ROOT
- sort the directories according to the version strings (also dir names), this probably involves to parse the string to major, minor and patch.
- compare the parsed version strings with version_spec to get the requested version
- set the output variable
Could anyone help on any of the above 1, 2, or 3? Thank you!
cmake qmake
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
add a comment |
I am converting a qmake project to cmake, and I am able to get it work, except the part that equivalent to !versionAtLeast(QT_VERSION, 5.11): error("Use at least Qt version 5.11".
The issue here is that I am currently using a user-supplied variable -DQt5_PREFIX=/path/to/Qt5/prefix to inform CMake the location of the Qt libs. In macOS, this is /Applications/Qt5/5.xx.x/clang_64 by default.
What I would like to achieve in my cmake scripts is a function that works as the following:
set(Qt_ROOT "/Applications/Qt")
GetQt5Prefix(Qt5_PREFIX ${Qt_ROOT} version_spec)
message("use Qt5 from ${Qt5_PREFIX}")
# suppose that in /Applications/Qt,
# I have three Qt: 5.11.2, 5.10.3 5.12.1
# the above will print "use Qt5 from"
# 5.12.1 if version_spec is 5
# 5.11.2 if version_spec is 5.11
# empty if version_spec is 5.10.1
From what I've got so far, I would image this function should do
- glob to find all subdirectories that looks like version string within Qt5_ROOT
- sort the directories according to the version strings (also dir names), this probably involves to parse the string to major, minor and patch.
- compare the parsed version strings with version_spec to get the requested version
- set the output variable
Could anyone help on any of the above 1, 2, or 3? Thank you!
cmake qmake
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
1
What is wrong in usingfind_package(QT5 5.11 REQUIRED)when search for QT? Such way CMake will emit an error if version of QT5 is too small.
– Tsyvarev
Jan 1 at 9:54
The problem is that to make find_package work, one has to add the Qt folder, whose name is the version string such as "5.11.2" within${QT_ROOT}, toCMAKE_PREFIX_PATH. Therefore, specifications such as 5.11 in find_package does not make sense because one has to specify the exact full version string to locate the exact Qt lib. What I am trying to do is only specify Qt_ROOT, and let cmake look into the directory, select the correct subdirectory (i.e., the exact version) according to the version specification, e.g., 5 or 5.11, or 5.11.2
– Jerry Ma
Jan 3 at 4:12
add a comment |
I am converting a qmake project to cmake, and I am able to get it work, except the part that equivalent to !versionAtLeast(QT_VERSION, 5.11): error("Use at least Qt version 5.11".
The issue here is that I am currently using a user-supplied variable -DQt5_PREFIX=/path/to/Qt5/prefix to inform CMake the location of the Qt libs. In macOS, this is /Applications/Qt5/5.xx.x/clang_64 by default.
What I would like to achieve in my cmake scripts is a function that works as the following:
set(Qt_ROOT "/Applications/Qt")
GetQt5Prefix(Qt5_PREFIX ${Qt_ROOT} version_spec)
message("use Qt5 from ${Qt5_PREFIX}")
# suppose that in /Applications/Qt,
# I have three Qt: 5.11.2, 5.10.3 5.12.1
# the above will print "use Qt5 from"
# 5.12.1 if version_spec is 5
# 5.11.2 if version_spec is 5.11
# empty if version_spec is 5.10.1
From what I've got so far, I would image this function should do
- glob to find all subdirectories that looks like version string within Qt5_ROOT
- sort the directories according to the version strings (also dir names), this probably involves to parse the string to major, minor and patch.
- compare the parsed version strings with version_spec to get the requested version
- set the output variable
Could anyone help on any of the above 1, 2, or 3? Thank you!
cmake qmake
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
I am converting a qmake project to cmake, and I am able to get it work, except the part that equivalent to !versionAtLeast(QT_VERSION, 5.11): error("Use at least Qt version 5.11".
The issue here is that I am currently using a user-supplied variable -DQt5_PREFIX=/path/to/Qt5/prefix to inform CMake the location of the Qt libs. In macOS, this is /Applications/Qt5/5.xx.x/clang_64 by default.
What I would like to achieve in my cmake scripts is a function that works as the following:
set(Qt_ROOT "/Applications/Qt")
GetQt5Prefix(Qt5_PREFIX ${Qt_ROOT} version_spec)
message("use Qt5 from ${Qt5_PREFIX}")
# suppose that in /Applications/Qt,
# I have three Qt: 5.11.2, 5.10.3 5.12.1
# the above will print "use Qt5 from"
# 5.12.1 if version_spec is 5
# 5.11.2 if version_spec is 5.11
# empty if version_spec is 5.10.1
From what I've got so far, I would image this function should do
- glob to find all subdirectories that looks like version string within Qt5_ROOT
- sort the directories according to the version strings (also dir names), this probably involves to parse the string to major, minor and patch.
- compare the parsed version strings with version_spec to get the requested version
- set the output variable
Could anyone help on any of the above 1, 2, or 3? Thank you!
cmake qmake
cmake qmake
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
asked Jan 1 at 4:16
Jerry MaJerry Ma
14610
14610
1
What is wrong in usingfind_package(QT5 5.11 REQUIRED)when search for QT? Such way CMake will emit an error if version of QT5 is too small.
– Tsyvarev
Jan 1 at 9:54
The problem is that to make find_package work, one has to add the Qt folder, whose name is the version string such as "5.11.2" within${QT_ROOT}, toCMAKE_PREFIX_PATH. Therefore, specifications such as 5.11 in find_package does not make sense because one has to specify the exact full version string to locate the exact Qt lib. What I am trying to do is only specify Qt_ROOT, and let cmake look into the directory, select the correct subdirectory (i.e., the exact version) according to the version specification, e.g., 5 or 5.11, or 5.11.2
– Jerry Ma
Jan 3 at 4:12
add a comment |
1
What is wrong in usingfind_package(QT5 5.11 REQUIRED)when search for QT? Such way CMake will emit an error if version of QT5 is too small.
– Tsyvarev
Jan 1 at 9:54
The problem is that to make find_package work, one has to add the Qt folder, whose name is the version string such as "5.11.2" within${QT_ROOT}, toCMAKE_PREFIX_PATH. Therefore, specifications such as 5.11 in find_package does not make sense because one has to specify the exact full version string to locate the exact Qt lib. What I am trying to do is only specify Qt_ROOT, and let cmake look into the directory, select the correct subdirectory (i.e., the exact version) according to the version specification, e.g., 5 or 5.11, or 5.11.2
– Jerry Ma
Jan 3 at 4:12
1
1
What is wrong in using
find_package(QT5 5.11 REQUIRED) when search for QT? Such way CMake will emit an error if version of QT5 is too small.– Tsyvarev
Jan 1 at 9:54
What is wrong in using
find_package(QT5 5.11 REQUIRED) when search for QT? Such way CMake will emit an error if version of QT5 is too small.– Tsyvarev
Jan 1 at 9:54
The problem is that to make find_package work, one has to add the Qt folder, whose name is the version string such as "5.11.2" within
${QT_ROOT}, to CMAKE_PREFIX_PATH. Therefore, specifications such as 5.11 in find_package does not make sense because one has to specify the exact full version string to locate the exact Qt lib. What I am trying to do is only specify Qt_ROOT, and let cmake look into the directory, select the correct subdirectory (i.e., the exact version) according to the version specification, e.g., 5 or 5.11, or 5.11.2– Jerry Ma
Jan 3 at 4:12
The problem is that to make find_package work, one has to add the Qt folder, whose name is the version string such as "5.11.2" within
${QT_ROOT}, to CMAKE_PREFIX_PATH. Therefore, specifications such as 5.11 in find_package does not make sense because one has to specify the exact full version string to locate the exact Qt lib. What I am trying to do is only specify Qt_ROOT, and let cmake look into the directory, select the correct subdirectory (i.e., the exact version) according to the version specification, e.g., 5 or 5.11, or 5.11.2– Jerry Ma
Jan 3 at 4:12
add a comment |
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1
What is wrong in using
find_package(QT5 5.11 REQUIRED)when search for QT? Such way CMake will emit an error if version of QT5 is too small.– Tsyvarev
Jan 1 at 9:54
The problem is that to make find_package work, one has to add the Qt folder, whose name is the version string such as "5.11.2" within
${QT_ROOT}, toCMAKE_PREFIX_PATH. Therefore, specifications such as 5.11 in find_package does not make sense because one has to specify the exact full version string to locate the exact Qt lib. What I am trying to do is only specify Qt_ROOT, and let cmake look into the directory, select the correct subdirectory (i.e., the exact version) according to the version specification, e.g., 5 or 5.11, or 5.11.2– Jerry Ma
Jan 3 at 4:12