Using premake5 file to generate make files for android. I am trying to produce the prebuilt library declaration as described in https://developer.android.com/ndk/guides/prebuilts.html
More precisely
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := foo-prebuilt
LOCAL_SRC_FILES := libfoo.so
include $(PREBUILT_SHARED_LIBRARY)
What kind of project would introduce the include include $(PREBUILT_SHARED_LIBRARY) or what other option do I need to include?
I have little knowledge in this, but I was able to use android PREBUILT_SHARED_LIBRARY - in premake4 using the following lua script:
The script is customised for the example you've give above.
linklibs = {"foo"}
libdirpaths = {"../../path/to/libs/"}
project "project_using_foo"
language "C"
kind "SharedLib"
files (android.srcfiles)
includedirs (includepaths)
location "build"
links (linklibs)
libdirs (libdirpaths)
buildoptions (buildoptions)
androidappabi {"armeabi-v7a"}
androidsdk "android-19"
where libfoo.so will be in ../../path/to/libs/$(TARGET_ARCH_ABI)/libfoo.so
[$(TARGET_ARCH_ABI) in this case is "armeabi-v7a"]
Related
I am trying to generate documentation for my code using QDoc. qtdoc command is already in my environment variable path. But when I try to run the command in the root directory of the project (qdocconf file also resides in project root),
qdoc projectname.qdocconf
I get the following error
qt.qdoc: "qdoc can't run; no project set in qdocconf file"
Here is my projectname.qdocconf file.
headers.fileextensions = "*.h *.hpp"
sources.fileextensions = "*.cpp *.qml *.qdoc"
outputdir = Documentation/Code
headerdirs += Code
sourcedirs += . \
Code
exampledirs = .
imagedirs += ./Images/icons \
./Images/logos
I have commented on my class functions as described in the documentation using the format
/*!
* \fn void inlineFunction()
*
* Some info here...
*/
Can you point me what am I doing wrong?
Also, can I create the documentation using QtCreator instead of running the command in terminal?
Well somehow I figured out that you need to add the following line in your .qdocconf file
project = YourProjectName
which is not present in the minimum qdocconf file presented in https://doc.qt.io/qt-5/qdoc-minimum-qdocconf.html. Even though the above issue was resolved, a lot of other issues were encountered such as:
While compiling, qt.qdoc: No include paths passed to qdoc; guessing reasonable include paths. For this you have to manually include all the source paths. Read: https://bugreports.qt.io/browse/QTBUG-67289
Some comment tags, e.g. \return, \param, present in QtCreator are not recognized by QDoc
Option 2
Alternatively, look for Doxygen which is much easier to use and generate documents with a simple to use GUI. It also recognizes all the comment tags in QtCreator.
Update:
Doxygen plugins for Qt Creator doesn't work anymore as the support has expired. Use Doxygen GUI directly.
I want to use R's mathematical functions as provided in libRmath from Ocaml. I successfully installed the library via brew tap homebrew science && brew install --with-librmath-only r. I end up with a .dylib in /usr/local/lib and a .h in /usr/local/include. Following the Ocaml ctypes tutorial, i do this in utop
#require "ctypes.foreign";;
open Ctypes;;
open Foreign;;
let test_pow = foreign "pow_di" (float #-> int #-> returning float);;
this complains that it can't find the symbol. What am I doing wrong? Do I need to open the dynamic library first? Set some environment variables? After googling, I also did this:
nm -gU /usr/local/lib/libRmath.dylib
which gives a bunch of symbols all with a leading underscore including 00000000000013ff T _R_pow_di. In the header file, pow_di is defined via some #define directive from _R_pow_di. I did try variations of the name like "R_pow_di" etc.
Edit: I tried compiling a simple C program using Rmath using Xcode. After setting the include path manually to include /usr/local/include, Xcode can find the header file Rmath.h. However, inside the header file, there is an include of R_ext/Boolean.h which does not seem to exist. This error is flagged by Xcode and compilation stops.
Noob alert: this may be totally obvious to a C programmer...
In order to use external library you still need to link. There're at least two different ways, either link using compiler, or link even more dynamically using dlopen.
For the first method use the following command (as an initial approximation):
ocamlbuild -pkg ctypes.foreign -lflags -cclib,-lRmath yourapp.native
under premise that your code is put into yourapp.ml file.
The second method is to use ctypes interface to dlopen to open the library. Using the correct types and name for the C function call, this goes like this:
let library = Dl.dlopen ~filename:"libRmath.dylib" ~flags:[]
let test_pow = foreign ~from:library "R_pow_di" (double #-> int #-> returning double)
I inherited an ADA program where the source file names and package file names don't follow the default naming convention. ADA is new to me, so I may be missing something simple, but I can't see it in the GNAT Pro User's Guide. (This similar question didn't help me.)
Here are a couple of examples:
File Name: C_Comm_Config_S.Ada
Package Name: Comm_Configuration
File Name: D_Bus_Buffers_S.Ada
Package Name: Bus_Buffers
I think I have the _S.Ada and _B.Ada sorted out, but I can't find anything in the program source or build files that show the binding between the Package Name and the rest of the File Name.
When I compile a file that doesn't use any other packages, I get a warning: file name does not match unit name... This appears to be from the prefix of C_ or D_, in this particular case.
Also, I'm not clear if the prefixes C_ and D_ have any special meaning in the context of ADA, but if it does, I'd like to know about it.
So I appear to have two issues, the Prefix of C_ or D_ and in some cases the rest of the file name doesn't match the package.
You could use gnatname: see the User’s Guide.
I copied subdirectories a/ and d/ from the ACATS test suite to a working directory and created a project file p.gpr:
project p is
for source_dirs use ("a", "d");
end p;
and ran gnatname with
gnatname -P p -d a -d d \*.ada
which resulted in an edited p.gpr and two new files, p_naming.gpr and p_source_list.txt. These are rather long, but look like
p.gpr:
with "p_naming.gpr";
project P is
for Source_List_File use "p_source_list.txt";
for Source_Dirs use ("a", "d");
package Naming renames P_Naming.Naming;
end P;
p_naming.gpr:
project P_Naming is
for Source_Files use ();
package Naming is
for Body ("d4a004b") use "d4a004b.ada";
for Body ("d4a004a") use "d4a004a.ada";
for Body ("d4a002b") use "d4a002b.ada";
...
for Body ("aa2010a_parent.boolean") use "aa2010a.ada" at 4;
for Body ("aa2010a_parent") use "aa2010a.ada" at 3;
for Spec ("aa2010a_parent") use "aa2010a.ada" at 2;
for Spec ("aa2010a_typedef") use "aa2010a.ada" at 1;
...
for Body ("a22006d") use "a22006d.ada";
for Body ("a22006c") use "a22006c.ada";
for Body ("a22006b") use "a22006b.ada”;
end Naming;
end P_Naming;
The for Body ("aa2010a_parent") use "aa2010a.ada" at 3; is used when there’s more than one unit in the source file.
p_source_list.txt:
a22006b.ada
a22006c.ada
a22006d.ada
a27003a.ada
a29003a.ada
...
d4a002b.ada
d4a004a.ada
d4a004b.ada
When building, for example, test d4a004b, you have to use the file name and suffix:
gnatmake -P p d4a004b.ada
The Ada standard does not say anything about source file naming conventions. As it appears that you use GNAT, I assume that you mean the "GNAT default naming convention".
You can tell GNAT about alternatively named files in a Naming package inside your project files.
A simple example:
project OpenID is
...
package Naming is
for Implementation ("Util.Log.Loggers.Traceback")
use "util-log-loggers-traceback-gnat.adb";
for Implementation ("Util.Serialize.IO.XML.Get_Location")
use "util-serialize-io-xml-get_location-xmlada-4.adb";
end Naming;
end OpenID;
We are moving into Scala/SBT from a Java/Gradle stack. Our gradle builds were leveraging a task called processResources and some Ant filter thing named ReplaceTokens to dynamically replace tokens in a checked-in .properties file without actually changing the .properties file (just changing the output). The gradle task looks like:
processResources {
def whoami = System.getProperty( 'user.name' );
def hostname = InetAddress.getLocalHost().getHostName()
def buildTimestamp = new Date().format('yyyy-MM-dd HH:mm:ss z')
filter ReplaceTokens, tokens: [
"buildsig.version" : project.version,
"buildsig.classifier" : project.classifier,
"buildsig.timestamp" : buildTimestamp,
"buildsig.user" : whoami,
"buildsig.system" : hostname,
"buildsig.tag" : buildTag
]
}
This task locates all the template files in the src/main/resources directory, performs the requisite substitutions and outputs the results at build/resources/main. In other words it transforms src/main/resources/buildsig.properties from...
buildsig.version=#buildsig.version#
buildsig.classifier=#buildsig.classifier#
buildsig.timestamp=#buildsig.timestamp#
buildsig.user=#buildsig.user#
buildsig.system=#buildsig.system#
buildsig.tag=#buildsig.tag#
...to build/resources/main/buildsig.properties...
buildsig.version=1.6.5
buildsig.classifier=RELEASE
buildsig.timestamp=2013-05-06 09:46:52 PDT
buildsig.user=jenkins
buildsig.system=bobk-mbp.local
buildsig.tag=dev
Which, ultimately, finds its way into the WAR file at WEB-INF/classes/buildsig.properties. This works like a champ to record build specific information in a Properties file which gets loaded from the classpath at runtime.
What do I do in SBT to get something like this done? I'm new to Scala / SBT so please forgive me if this seems a stupid question. At the end of the day what I need is a means of pulling some information from the environment on which I build and placing that information into a properties file that is classpath loadable at runtime. Any insights you can give to help me get this done are greatly appreciated.
The sbt-buildinfo is a good option. The README shows an example of how to define custom mappings and mappings that should run on each compile. In addition to the straightforward addition of normal settings like version shown there, you want a section like this:
buildInfoKeys ++= Seq[BuildInfoKey](
"hostname" -> java.net.InetAddress.getLocalHost().getHostName(),
"whoami" -> System.getProperty("user.name"),
BuildInfoKey.action("buildTimestamp") {
java.text.DateFormat.getDateTimeInstance.format(new java.util.Date())
}
)
Would the following be what you're looking for:
sbt-editsource: An SBT plugin for editing files
sbt-editsource is a text substitution plugin for SBT 0.11.x and
greater. In a way, it’s a poor man’s sed(1), for SBT. It provides the
ability to apply line-by-line substitutions to a source text file,
producing an edited output file. It supports two kinds of edits:
Variable substitution, where ${var} is replaced by a value. sed-like
regular expression substitution.
This is from Community Plugins.
I require the syntax of a CMAKE macro that generates .cc and .h files from a tool like lex/yacc.
Could someone please show me the syntax for the following contrived example:
say I have a file y.cc that depends on x.cc and x.h, the two files mentioned are generated by tool z_tool from file x.z. What would the syntax for this be ?
For this example assume that y.cc will be turned into a static library, and as I am quite new to CMAKE the full CMakellist.txt for this contrived example would be very helpful.I'm looking for a portable solution as the tools I am using are available on windows as well as UNIX variants.
Rather than give you the answer to a contrived example, here is the way you would generate an executable using flex and bison
find_package(BISON)
find_package(FLEX)
BISON_TARGET(MyParser parser.y ${CMAKE_CURRENT_BINARY_DIR}/parser.cc)
FLEX_TARGET(MyScanner lexer.l ${CMAKE_CURRENT_BINARY_DIR}/lexer.cc)
ADD_FLEX_BISON_DEPENDENCY(MyScanner MyParser)
include_directories(${CMAKE_CURRENT_BINARY_DIR})
add_executable(Foo
Foo.cc
${BISON_MyParser_OUTPUTS}
${FLEX_MyScanner_OUTPUTS})
target_link_libraries(Foo ${FLEX_LIBRARIES} ${BISON_LIBRARIES})
The CMake find packages for bison/flex are included in the default installation, so this is cross platform.
In general to create an output that will later be used as an input you can use the add_custom_command function. If you use an output from the custom command as an input to a library or executable, then CMake knows to run your custom command before compiling the sources for the library/executable target.
The following line has Typo
FLEX_TARGET(MyScanner lexer.l ${CMAKE_CURRENT_BIANRY_DIR}/lexer.cc)
BIANRY should be spelled as BINARY.
Note: CMake Documentation has this typo there as well. ( in 2.8.0, this is fixed in 2.8.10 documentation)..
/* To make it work on my Mac with Lion. I changed the files names to y.tab.c and lex.yy.c, which are the output files if you run lex lex.l and yacc -D yacc.y from command line. See below.
*/
cmake_minimum_required(VERSION 2.8)
project (LexYacc)
find_package(BISON)
find_package(FLEX)
BISON_TARGET(MyParser yacc.y ${CMAKE_CURRENT_BINARY_DIR}/y.tab.c)
FLEX_TARGET(MyScanner lex.l ${CMAKE_CURRENT_BINARY_DIR}/lex.yy.c)
ADD_FLEX_BISON_DEPENDENCY(MyScanner MyParser)
include_directories(${CMAKE_CURRENT_BINARY_DIR})
add_executable(LexYacc
${BISON_MyParser_OUTPUTS}
${FLEX_MyScanner_OUTPUTS})
target_link_libraries(LexYacc ${FLEX_LIBRARIES} ${BISON_LIBRARIES})