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cottsay / openelp

Open Source EchoLink Proxy
BSD 3-Clause "New" or "Revised" License
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Issues building on Ubuntu Server 15.04 #1

Closed PatrickLang closed 8 years ago

PatrickLang commented 8 years ago

I added libpcre3-dev and cmake, cloned the repo, then tried to build as recommended. No luck :(

Patrick@Ubuntu-1504-1:~/OpenELP/openelp/build$ cmake ..
CMake Error at /usr/share/cmake-3.0/Modules/FindPackageHandleStandardArgs.cmake:136 (message):
  Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)
Call Stack (most recent call first):
  /usr/share/cmake-3.0/Modules/FindPackageHandleStandardArgs.cmake:343 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/cmake-3.0/Modules/FindPkgConfig.cmake:168 (find_package_handle_standard_args)
  CMakeLists.txt:91 (find_package)

-- Configuring incomplete, errors occurred!
See also "/home/Patrick/OpenELP/openelp/CMakeFiles/CMakeOutput.log".
PatrickLang commented 8 years ago 
The system is: Linux - 3.19.0-47-generic - x86_64
Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded.
Compiler: /usr/bin/cc 
Build flags: 
Id flags: 

The output was:
0

Compilation of the C compiler identification source "CMakeCCompilerId.c" produced "a.out"

The C compiler identification is GNU, found in "/home/Patrick/OpenELP/openelp/cmake/CMakeFiles/3.0.2/CompilerIdC/a.out"

Determining if the C compiler works passed with the following output:
Change Dir: /home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTryCompileExec636791859/fast"
/usr/bin/make -f CMakeFiles/cmTryCompileExec636791859.dir/build.make CMakeFiles/cmTryCompileExec636791859.dir/build
make[1]: Entering directory '/home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp/CMakeFiles 1
Building C object CMakeFiles/cmTryCompileExec636791859.dir/testCCompiler.c.o
/usr/bin/cc    -o CMakeFiles/cmTryCompileExec636791859.dir/testCCompiler.c.o   -c /home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp/testCCompiler.c
Linking C executable cmTryCompileExec636791859
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTryCompileExec636791859.dir/link.txt --verbose=1
/usr/bin/cc       CMakeFiles/cmTryCompileExec636791859.dir/testCCompiler.c.o  -o cmTryCompileExec636791859 -rdynamic 
make[1]: Leaving directory '/home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp'

Detecting C compiler ABI info compiled with the following output:
Change Dir: /home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp

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/usr/bin/make -f CMakeFiles/cmTryCompileExec3977694296.dir/build.make CMakeFiles/cmTryCompileExec3977694296.dir/build
make[1]: Entering directory '/home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /home/Patrick/OpenELP/openelp/cmake/CMakeFiles/CMakeTmp/CMakeFiles 1
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/usr/bin/cc    -o CMakeFiles/cmTryCompileExec3977694296.dir/CMakeCCompilerABI.c.o   -c /usr/share/cmake-3.0/Modules/CMakeCCompilerABI.c
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cottsay commented 8 years ago

I replied to the E-mail, but I'd guess it didn't post. Sorry about that.

This is really good feedback. I missed documenting a dependency.

You need to install pkgconfig. The deb will be called either “pkgconfig” or “pkg-config”. PkgConfig is an automatic dependency system. The preferred method of dependency resolution is using CMake itself, but pcre doesn’t provide the necessary “PCRE2Config.cmake” or “FindPCRE2.cmake”, so we chain to PkgConfig to find it (PCRE2 does provide a “pcre2.pc” file).

I’ll add it to the README.md. For the more bleeding edge code, you should also use the “devel” branch.

--scott

PatrickLang commented 8 years ago

I added both pkgconf and pkg-config. However, it looks like Ubuntu 15.04 only has PCRE3, not 2

Patrick@Ubuntu-1504-1:~/OpenELP/openelp/build$ cmake ..
-- checking for module 'libpcre2-8'
--   package 'libpcre2-8' not found
CMake Error at /usr/share/cmake-3.0/Modules/FindPkgConfig.cmake:345 (message):
  A required package was not found
Call Stack (most recent call first):
  /usr/share/cmake-3.0/Modules/FindPkgConfig.cmake:399 (_pkg_check_modules_internal)
  CMakeLists.txt:92 (pkg_check_modules)
cottsay commented 8 years ago

I'm surprised - looks like Ubuntu doesn't have PCRE2 in active releases yet: https://launchpad.net/ubuntu/+source/pcre2.

I did all my testing on Fedora, which has it. You'll have to bundle PCRE2 until Ubuntu supports it. Specify -DOPENELP_BUNDLE_PCRE:BOOL=ON when invoking cmake. And be sure you're using the devel branch.