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conan install rtmidi/4.0.0@ --build=rtmidi --profile=/home/conan/w/BuildSingleReference/23792/5faf9733-d63a-40f0-abf3-158a7b2d1922/profile.txt
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=gcc
compiler.libcxx=libstdc++
compiler.version=4.9
os=Linux
os_build=Linux
[options]
rtmidi:shared=True
[build_requires]
[env]

rtmidi/4.0.0: Forced build from source
Installing package: rtmidi/4.0.0
Requirements
    libalsa/1.2.4 from 'conan-center' - Cache
    rtmidi/4.0.0 from local cache - Cache
Packages
    libalsa/1.2.4:6bd29c2406cdd5f059389eeea08674bc72087c64 - Cache
    rtmidi/4.0.0:d1e633b02abf3ada82bed6ea427327ca9a1155d4 - Build

Installing (downloading, building) binaries...
libalsa/1.2.4: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
rtmidi/4.0.0: Copying sources to build folder
rtmidi/4.0.0: Building your package in /home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4
rtmidi/4.0.0: Generator txt created conanbuildinfo.txt
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
rtmidi/4.0.0: Calling build()

----Running------
> cd '/home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4' && cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE="Debug" -DCONAN_IN_LOCAL_CACHE="ON" -DCONAN_COMPILER="gcc" -DCONAN_COMPILER_VERSION="4.9" -DCONAN_CXX_FLAGS="-m64" -DCONAN_SHARED_LINKER_FLAGS="-m64" -DCONAN_C_FLAGS="-m64" -DCONAN_LIBCXX="libstdc++" -DBUILD_SHARED_LIBS="ON" -DCMAKE_INSTALL_PREFIX="/home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/package/d1e633b02abf3ada82bed6ea427327ca9a1155d4" -DCMAKE_INSTALL_BINDIR="bin" -DCMAKE_INSTALL_SBINDIR="bin" -DCMAKE_INSTALL_LIBEXECDIR="bin" -DCMAKE_INSTALL_LIBDIR="lib" -DCMAKE_INSTALL_INCLUDEDIR="include" -DCMAKE_INSTALL_OLDINCLUDEDIR="include" -DCMAKE_INSTALL_DATAROOTDIR="share" -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY="ON" -DCONAN_EXPORTED="1" -Wno-dev '/home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4/source_subfolder'
-----------------
-- The CXX compiler identification is GNU 4.9.4
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.26") 
-- Checking for module 'jack'
--   No package 'jack' found
-- Could NOT find ALSA (missing: ALSA_LIBRARY ALSA_INCLUDE_DIR) 
-- Configuring incomplete, errors occurred!
See also "/home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4/CMakeFiles/CMakeOutput.log".
rtmidi/4.0.0: 
CMake Error at CMakeLists.txt:118 (message):
  ALSA API requested but no ALSA dev libraries found


rtmidi/4.0.0: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4
rtmidi/4.0.0: ERROR: Package 'd1e633b02abf3ada82bed6ea427327ca9a1155d4' build failed
rtmidi/4.0.0: WARN: Build folder /home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4
ERROR: rtmidi/4.0.0: Error in build() method, line 52
	cmake = self._configure_cmake()
while calling '_configure_cmake', line 48
	self._cmake.configure(source_folder=self._source_subfolder)
	ConanException: Error 1 while executing cd '/home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4' && cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE="Debug" -DCONAN_IN_LOCAL_CACHE="ON" -DCONAN_COMPILER="gcc" -DCONAN_COMPILER_VERSION="4.9" -DCONAN_CXX_FLAGS="-m64" -DCONAN_SHARED_LINKER_FLAGS="-m64" -DCONAN_C_FLAGS="-m64" -DCONAN_LIBCXX="libstdc++" -DBUILD_SHARED_LIBS="ON" -DCMAKE_INSTALL_PREFIX="/home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/package/d1e633b02abf3ada82bed6ea427327ca9a1155d4" -DCMAKE_INSTALL_BINDIR="bin" -DCMAKE_INSTALL_SBINDIR="bin" -DCMAKE_INSTALL_LIBEXECDIR="bin" -DCMAKE_INSTALL_LIBDIR="lib" -DCMAKE_INSTALL_INCLUDEDIR="include" -DCMAKE_INSTALL_OLDINCLUDEDIR="include" -DCMAKE_INSTALL_DATAROOTDIR="share" -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY="ON" -DCONAN_EXPORTED="1" -Wno-dev '/home/conan/w/BuildSingleReference/.conan/data/rtmidi/4.0.0/_/_/build/d1e633b02abf3ada82bed6ea427327ca9a1155d4/source_subfolder'