Re: [Boost-users] Help with a compilation error [Boost/Math]

On Aug 3, 2022, at 1:56 PM, Peder Lon Hauge via Boost-users wrote:

Hi,

I'm trying to use Boost in order to find values of a 2F3 hypergeometric function. Just to check that I am using the package the correct way, I tried to compile the small test file below (using the example from the pFq docs), with the command

$ g++ -o test.exe test.cpp -I /home/peder/boost/boost_1_79_0

As far as I understand, the library is header-only, so I didn't expect the compilation error below. I don't where I've made a mistake, and I'd greatly appreciate any help with figuring out the error.

I'm running Ubuntu 20.04.04 on WSL and using gcc 9.4.0.

Best regards, Peder

Test program:

#include <iostream> #include

int main() { double z = -9; double h = boost::math::hypergeometric_pFq({2,3,4}, {5,6,7,8}, z); // Calculate 3F4

std::cout << h << std::endl; return0; }

Error message:

$ g++ -o test.exe test.cpp -I /home/peder/boost/boost_1_79_0 /usr/bin/ld: /tmp/ccp4Lm8m.o: in function `std::pair boost::math::detail::hypergeometric_pFq_checked_series_impl, boost::math::detail::iteration_terminator>(std::initializer_list<int> const&, std::initializer_list<int> const&, long double const&, boost::math::policies::policy const&, boost::math::detail::iteration_terminator const&, long long&)': test.cpp:(.text._ZN5boost4math6detail38hypergeometric_pFq_checked_series_implISt16initializer_listIiEeNS0_8policies6policyINS5_14default_policyES7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_EENS1_20iteration_terminatorEEESt4pairIT0_SB_ERKT_SF_RKSB_RKT1_RKT2_Rx[_ZN5boost4math6detail38hypergeometric_pFq_checked_series_implISt16initializer_listIiEeNS0_8policies6policyINS5_14default_policyES7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_EENS1_20iteration_terminatorEEESt4pairIT0_SB_ERKT_SF_RKSB_RKT1_RKT2_Rx]+0xeef): undefined reference to `boost::math::tools::promote_args::type boost::math::lgamma >(long double, boost::math::policies::policy const&)' /usr/bin/ld: test.cpp:(.text._ZN5boost4math6detail38hypergeometric_pFq_checked_series_implISt16initializer_listIiEeNS0_8policies6policyINS5_14default_policyES7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_EENS1_20iteration_terminatorEEESt4pairIT0_SB_ERKT_SF_RKSB_RKT1_RKT2_Rx[_ZN5boost4math6detail38hypergeometric_pFq_checked_series_implISt16initializer_listIiEeNS0_8policies6policyINS5_14default_policyES7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_S7_EENS1_20iteration_terminatorEEESt4pairIT0_SB_ERKT_SF_RKSB_RKT1_RKT2_Rx]+0xfe5): undefined reference to `boost::math::tools::promote_args::type boost::math::expm1 >(long double, boost::math::policies::policy const&)' /usr/bin/ld: /tmp/ccp4Lm8m.o: in function `int boost::math::detail::log_pochhammer >(int, unsigned int, boost::math::policies::policy, int*)': test.cpp:(.text._ZN5boost4math6detail14log_pochhammerIiNS0_8policies6policyINS3_14default_policyES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_EEEET_S7_jT0_Pi[_ZN5boost4math6detail14log_pochhammerIiNS0_8policies6policyINS3_14default_policyES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_EEEET_S7_jT0_Pi]+0x3d): undefined reference to `boost::math::tools::promote_args::type boost::math::lgamma >(int, int*, boost::math::policies::policy const&)' /usr/bin/ld: test.cpp:(.text._ZN5boost4math6detail14log_pochhammerIiNS0_8policies6policyINS3_14default_policyES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_EEEET_S7_jT0_Pi[_ZN5boost4math6detail14log_pochhammerIiNS0_8policies6policyINS3_14default_policyES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_EEEET_S7_jT0_Pi]+0x57): undefined reference to `boost::math::tools::promote_args::type boost::math::lgamma >(int, int*, boost::math::policies::policy const&)' collect2: error: ld returned 1 exit status

Peder, I have opened an issue on GitHub (https://github.com/boostorg/math/issues/810) for this problem, and am working on a fix. Matt