J’ai donc voulu faire l’installation de gtest : https://github.com/google/googletest sur un serveur en Fédora 17 mais sans succès.
# wget https://github.com/google/googletest/archive/master.zip # unzip master.zip # cd googletest-master/# mkdir mybuild# cat ../CMakeLists.txtcmake_minimum_required(VERSION 2.8.8) if (CMAKE_VERSION VERSION_LESS "3.1") add_definitions(-std=c++11)else() set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_EXTENSIONS OFF)endif() if (POLICY CMP0048) cmake_policy(SET CMP0048 NEW)endif (POLICY CMP0048) project(googletest-distribution)set(GOOGLETEST_VERSION 1.9.0) enable_testing() include(CMakeDependentOption)include(GNUInstallDirs) #Note that googlemock target already builds googletestoption(BUILD_GMOCK "Builds the googlemock subproject" ON)option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON) if(BUILD_GMOCK) add_subdirectory( googlemock )else() add_subdirectory( googletest )endif() # uname -aLinux fedora17-64b 3.3.4-5.fc17.x86_64 #1 SMP Mon May 7 17:29:34 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux # rpm -qa | grep "cmake"cmake-2.8.9-1.fc17.x86_64 # cmake -G"Unix Makefiles" ..-- The C compiler identification is GNU 4.7.2-- The CXX compiler identification is GNU 4.7.2-- Check for working C compiler: /bin/gcc-- Check for working C compiler: /bin/gcc -- works-- Detecting C compiler ABI info-- Detecting C compiler ABI info - done-- Check for working CXX compiler: /bin/c++-- Check for working CXX compiler: /bin/c++ -- works-- Detecting CXX compiler ABI info-- Detecting CXX compiler ABI info - done-- Found PythonInterp: /bin/python (found version "2.7.3")-- Looking for include file pthread.h-- Looking for include file pthread.h - found-- Looking for pthread_create-- Looking for pthread_create - not found.-- Looking for pthread_create in pthreads-- Looking for pthread_create in pthreads - not found-- Looking for pthread_create in pthread-- Looking for pthread_create in pthread - found-- Found Threads: TRUECMake Error at /usr/share/cmake/Modules/WriteBasicConfigVersionFile.cmake:39 (message): No VERSION specified for WRITE_BASIC_CONFIG_VERSION_FILE()Call Stack (most recent call first): /usr/share/cmake/Modules/CMakePackageConfigHelpers.cmake:152 (write_basic_config_version_file) googletest/CMakeLists.txt:96 (write_basic_package_version_file) -- Configuring incomplete, errors occurred!# cat ../CMakeLists.txt cmake_minimum_required(VERSION 2.8.8) if (CMAKE_VERSION VERSION_LESS "3.1") add_definitions(-std=c++11)else() set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_EXTENSIONS OFF)endif() if (POLICY CMP0048) cmake_policy(SET CMP0048 NEW)endif (POLICY CMP0048) project(googletest-distribution)#set(CMAKE_PROJECT_VERSION_SET_BY_PROJECT_COMMAND FALSE)set(GOOGLETEST_VERSION 1.9.0) if("${CVF_VERSION}" STREQUAL "") if ("${GOOGLETEST_VERSION}" STREQUAL "") message(FATAL_ERROR "No VERSION specified for WRITE_BASIC_CONFIG_VERSION_FILE()") else() set(CVF_VERSION "${GOOGLETEST_VERSION}") endif()endif() if("${CVF_VERSION}" STREQUAL "") message(FATAL_ERROR "No VERSION specified for WRITE_BASIC_CONFIG_VERSION_FILE()")else() endif() enable_testing() include(CMakeDependentOption)include(GNUInstallDirs) #Note that googlemock target already builds googletestoption(BUILD_GMOCK "Builds the googlemock subproject" ON)option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON) if(BUILD_GMOCK) add_subdirectory( googlemock )else() add_subdirectory( googletest )endif()Dans le fichier la version minimum semble être 2.8.8 et j’ai la version 2.8.9-1. J’ai essayé de forcer la variable mais sans succès.
Un petit exemple vaut mieux que de grands discours, voici le source en C :
#include
#include
#include
#include <sys/time.h>
#include <sys/types.h>
#include
static long debut = 0;
void* longue_pause(void* a){
pid_t t = getpid();
printf("pid = %d\n",(int)t);
printf("thread longue_pause %d debut : %ld\n",(int)pthread_self(),time(0)-debut);
sleep(10);
printf("thread longue_pause %d fin : %ld\n",(int)pthread_self(),time(0)-debut);
}
void* petites_pauses(void* a){
int i = 0;
pid_t t = getpid();
printf("pid = %d\n",t);
printf("thread petites_pauses %d debut : %ld \n",(int)pthread_self(), time(0)-debut);
for(; i < 10 ;++i){
printf("thread petites_pauses %d en cours : %ld \n",(int)pthread_self(), time(0)-debut);
sleep(1);
}
}
int main(){
pthread_t longue;
pthread_t petit1;
pthread_t petit2;
debut = time(0);
pthread_create(&longue,NULL,longue_pause,NULL);
pthread_create(&petit1,NULL,petites_pauses,NULL);
pthread_create(&petit2,NULL,petites_pauses,NULL);
sleep(8);
printf("Debut join: %ld\n",time(0)-debut);
pthread_join(longue,NULL);
printf("fin long : %ld\n",time(0)-debut);
pthread_join(petit1,NULL);
printf("fin petit1 : %ld\n",time(0)-debut);
pthread_join(petit2,NULL);
printf("fin petit2 : %ld\n",time(0)-debut);
}Pour la compilation :
Quelle misère ce portage sur une Fédora 14 :
# make
…
/usr/bin/ld: cannot find -lmysqlclient
# ldconfig -v | grep "mysql"
/usr/lib/mysql:
libmysqlclient.so.16 -> libmysqlclient.so.16.0.0
libmysqlclient_r.so.16 -> libmysqlclient_r.so.16.0.0
# rpm -qa | grep mysql
mysql-devel-5.1.58-1.fc14.i686
mysql-5.1.58-1.fc14.i686
mysql-libs-5.1.58-1.fc14.i686
# ld -lmysqlclient --verbose
GNU ld version 2.20.51.0.7-5.fc14 20100318
Supported emulations:
elf_i386
i386linux
elf_x86_64
elf_l1om
using internal linker script:
==================================================
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OUTPUT_ARCH(i386)
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==================================================
attempt to open /usr/i686-redhat-linux/lib/libmysqlclient.so failed
attempt to open /usr/i686-redhat-linux/lib/libmysqlclient.a failed
attempt to open /usr/local/lib/libmysqlclient.so failed
attempt to open /usr/local/lib/libmysqlclient.a failed
attempt to open /lib/libmysqlclient.so failed
attempt to open /lib/libmysqlclient.a failed
attempt to open /usr/lib/libmysqlclient.so failed
attempt to open /usr/lib/libmysqlclient.a failed
# locate /libmysqlclient.so
/usr/lib/mysql/libmysqlclient.so
/usr/lib/mysql/libmysqlclient.so.16
/usr/lib/mysql/libmysqlclient.so.16.0.0
# ln -s /usr/lib/mysql/libmysqlclient.so /lib/libmysqlclient.so
# make
: undefined reference to `mysql_connect'
Ensuite il a fallu changer les fonctions mysql_connect par mysql_real_connect :
Je fais un petit article pour mettre mes configurations de Redis (de l’anglais REmote DIctionary Server qui peut-être traduit par « serveur de dictionnaire distant ») sous Linux, afin de partager et aussi de corriger si nécessaire. Redis est développé en C AINSI comme tous les bons logiciels, il fait partie des NoSQL ( https://fr.wikipedia.org/wiki/NoSQL ). Les plus intéressant à connaitre sont : REDIS, MongoDB ( https://www.mongodb.com/fr ) , CouchDB ( http://couchdb.apache.org ) .
C’était une super édition avec beaucoup d’échanges ( Docker, Zabbix, PostgreSQL, Redhat, Fédora, RabbitMQ, …) , et superbe discours d’Axelle Lemaire en ouverture. Même si on préférerait voir des actes plutôt que des beaux discours ;) . Vivement le Libre dans l’éducation nationale, la police, la défense, … . Voir que même les ministères signent des contrats ailleurs qu’en France (en Irlande), ce n’est pas montrer le bon exemple. Lire cet article de l’APRIL : https://www.april.org/l-april-demande-la-publication-de-l-accord-de-securite-entre-microsoft-et-l-etat.