errors in "make"

[yu15129214430]

src/utilities.h: In function ‘double randDouble()’: src/utilities.h:48:47: error: ‘getpid’ was not declared in this scope srand(TV.tv_sec * TV.tv_usec + getpid() + getDevRandom()); ^ Makefile:31: recipe for target 'src/online_rf.o' failed make: *\ [src/online_rf.o] Error 1 even I installed eigen2 and libconfig-1.5.

[amirsaffari]

I believe you need to look for getpid in your platform and check which header has it. This is unrelated to eigen and libconfig.

Alternatively, remove the getpid() from that line.

[yu15129214430]

Thank you for your reply. I have added

include <unistd.h>

to utilities.h. But ,there are more problems in here : src/hyperparameters.o：在函‘Hyperparameters::Hyperparameters(std::__cxx11::basic_string<char, std::chartraits, std::allocator > const&)’中： hyperparameters.cpp:(.text+0xe5)：对‘libconfig::Config::Config()’未定义的引用 hyperparameters.cpp:(.text+0xef)：对‘libconfig::Config::readFile(char const)’未定义的引用 hyperparameters.cpp:(.text+0xfc)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x104)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x114)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x11c)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x12b)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x133)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x143)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x14b)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x15b)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x163)：对‘libconfig::Setting::operator double() const’未定义的引用 hyperparameters.cpp:(.text+0x173)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x17b)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x18b)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x193)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x1a3)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x1ab)：对‘libconfig::Setting::operator double() const’未定义的引用 hyperparameters.cpp:(.text+0x1bb)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x1c3)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x1d3)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x1db)：对‘libconfig::Setting::operator double() const’未定义的引用 hyperparameters.cpp:(.text+0x1eb)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x1f3)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x203)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x20b)：对‘libconfig::Setting::operator double() const’未定义的引用 hyperparameters.cpp:(.text+0x21b)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x223)：对‘libconfig::Setting::operator double() const’未定义的引用 hyperparameters.cpp:(.text+0x233)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x23b)：对‘libconfig::Setting::operator double() const’未定义的引用 hyperparameters.cpp:(.text+0x24b)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x253)：对‘libconfig::Setting::operator double() const’未定义的引用 hyperparameters.cpp:(.text+0x263)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x26b)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x27b)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x283)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x293)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x29b)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x2ab)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x2b3)：对‘libconfig::Setting::operator char const() const’未定义的引用 hyperparameters.cpp:(.text+0x2dd)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x2e5)：对‘libconfig::Setting::operator char const() const’未定义的引用 hyperparameters.cpp:(.text+0x312)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x31a)：对‘libconfig::Setting::operator char const() const’未定义的引用 hyperparameters.cpp:(.text+0x34a)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x352)：对‘libconfig::Setting::operator char const() const’未定义的引用 hyperparameters.cpp:(.text+0x382)：对‘libconfig::Config::lookup(char const) const’未定义的引用 hyperparameters.cpp:(.text+0x38a)：对‘libconfig::Setting::operator char const() const’未定义的引用 hyperparameters.cpp:(.text+0x3ba)：对‘libconfig::Config::lookup(char const_) const’未定义的引用 hyperparameters.cpp:(.text+0x3c2)：对‘libconfig::Setting::operator int() const’未定义的引用 hyperparameters.cpp:(.text+0x419)：对‘libconfig::Config::~Config()’未定义的引用 hyperparameters.cpp:(.text+0x479)：对‘libconfig::Config::~Config()’未定义的引用 collect2: error: ld returned 1 exit status Makefile:28: recipe for target 'OMCBoost' failed make: *\ [OMCBoost] Error 1

what's wrong? thanks for you time

[amirsaffari]

I think the linker is not able to find libconfig. Make sure that you install the correct version of the libconfig .

[yu15129214430]

So, where should I install the libconfig to a correct linker? Thank you.

[StatML]

Hi @amirsaffari I met the same libconfig++ linking errors. Specifying the path (/usr/lib/x86_64-linux-gnu) of libconfig++.so in Makefile does not help. I am using Ubuntu 16.04.4, G++ 5.4.0, libconfig++ 9.2.0

[admfisher14]

Move the reference to the library to the end of the line in the make file e.g move -libconf++ to the end of the line it is in

[RuixiangMa]

I also suffer from the same problem, it is as follow: Makefile:28: recipe for target 'OMCBoost' failed make: *** [OMCBoost] Error 1 The version of Libconfig is 1.4.4, it is consistent with the recommended version, can you give me a solution to this problem? Thanks!

[hatemalamir]

Thank you, @admfisher14 ! Worked!!