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libdcompile
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Fadis
May 09, 2015
Programming
0
250
libdcompile
LLVMとclangを使ってC++を実行時にコンパイルする方法を解説します
Fadis
May 09, 2015
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Transcript
libdcompile Naomasa Matsubayashi
@fadis_ ࠷ۙͷ"ࣾ $ 7JN (FOUPP มଶΛࣝผ͢Δཁૉ
int main() {! float a = 5.0f;! std::vector< boost::filesystem::path >
f;! f.push_back( "hoge.cpp" );! f.push_back( "fuga.cpp" );! dcompile::dynamic_compiler dc;! dc.getLoader().enableSystemPath();! if( !dc.getLoader().load( "jpeg" ) )! throw Ouch();! dc.getHeaderPath().enableSystemPath();! dcompile::module lib = dc( f.begin(), f.end() );! boost::optional< dcompile::function > foo =! lib.getFunction( "foo" );! if( foo )! (*foo)( &a );! else! throw Ouch();! std::cout << a << " outside" << std::endl;! }
$ ʹແͯ͘൵͍͠ͷ FWBM
FWBMͱ 1FSMͷ߹ FWBMQSJOUa)FMMP 8PSMEaOa ͔͜͜Β ͜͜·Ͱ จࣈྻ จࣈྻͰ༩͑ΒΕͨίʔυΛ࣮ߦ͢Δ
FWBMͱ จࣈྻͰ༩͑ΒΕͨίʔυΛ࣮ߦ͢Δ @45%*/ FWBM@ ਖ਼͍͠ DBUIPHFQM @45%*/ FWBM@ FDIPQSJOU)FMMP 8PSMEaOcQFSMIPHFQM
)FMMP 8PSME
FWBMͱ DBUIPHFQM @45%*/ FWBM@ FDIPQSJOU)FMMP 8PSMEaOcQFSMIPHFQM )FMMP 8PSME ॲཧ༰͕QSJOUʹܾ·ͬͨͷ࣮ߦ࣌
࣮ߦ࣌ʹίʔυΛղऍͯ͠ Ϛγϯޠʹམͱ͢खஈ͕ඞཁ
FWBMͱ ࣮ߦ࣌ʹίʔυΛղऍͯ͠ Ϛγϯޠʹམͱ͢खஈ͕ඞཁ 1FSM 0, 3VCZ 0, 1ZUIPO 0, +BWB4DSJQU
0, $ PS[ $ PS[ % ίϯύΠϧ࣌ͷΈ +BWB PS[ $ 0, )BTLFMM 0, ίϯύΠϥ͕ϥΠϒϥʹؚ·Ε͍ͯΔ
ϥΠϒϥϦʹͳͬͯΔ$ ίϯύΠϥ --7. DMBOH ͜ΕΛ͑$ ͰFWBMͰ͖Δͣ
MJCEDPNQJMF IUUQTHJUIVCDPN'BEJTMJCEDPNQJMF
Ϛγϯޠ Ϛγϯޠͷੜ DMBOH --7. VTFS $ #$ $ #$ ߏจղੳ
#$*3 ϦϯΫ
--7.ಡΈࠐΜͩ#$ͷѻ͍Λ छྨ͔ΒબΔ ίϯύΠϧ Ϛγϯޠʹมͯ݁͠ՌΛ ϑΝΠϧʹॻ͖ग़͢ ΠϯλϓϦλ ߦͮͭಡΈࠐΜͰ࣮ߦ +*5ίϯύΠϧ ඞཁ࠷খݶͷ෦͚ͩΛ ίϯύΠϧ͠ͳ͕Β࣮ߦ
௨ৗ$ ͷίʔυΛίϯύΠϧ͢Δ߹ ʮίϯύΠϧʯ͕༻͍ΒΕΔ
FWBMΛ͢Δ߹ίϯύΠϧΛ͖͢Ͱͳ͍ --7.ʹ&-'ͱ͔1&ͱ͔Λѻ͑ΔϦϯΧ͕ͳ͍ 3FRVJSFNFOU(/6CJOVUJMT ͱ͔ͯͳ͍͠ ίϯύΠϧҎ֎ͷํ๏Ͱ࣮ߦ͢Δͱ ෆࢥٞͳྗʹΑΓԿࣄແ࣮͘ߦग़དྷΔ
ϦϯΧΛΘͣʹͲ͏ͬͯ ґଘϥΠϒϥϦΛϦϯΫ͍ͯ͠Δͷ͔ --7.ΠϯλϓϦλ+*5Ͱ࣮ߦ͢Δࡍ ಉҰ#$தʹݟ͔ͭΒͳ͍γϯϘϧΛ EMGDOͰ୳ͦ͏ͱ͢Δ άϩʔόϧม JOUB ίϯύΠϧ࣌ίϯύΠϧ JODMVEFJPTUFSBN FYUFSOJOUB
JOUNBJO \ TUEDPVUB TUEFOEM ^ ࣮ߦ࣌ίϯύΠϧ ݟ͑Δʂ
--7.ΠϯλϓϦλ+*5Ͱ࣮ߦ͢Δࡍ ಉҰ--7.*3தʹݟ͔ͭΒͳ͍γϯϘϧΛ EMGDOͰ୳ͦ͏ͱ͢Δ ϦϯΧΛΘͣʹͲ͏ͬͯ ґଘϥΠϒϥϦΛϦϯΫ͍ͯ͠Δͷ͔ EMGDOͰݟ͔ͭΔͷ ݩʑόΠφϦதʹ͋ͬ ͨγϯϘϧ 35%-@(-0#"-Ͱ ϩʔυͨ͠γϯϘϧ
͋Β͔͡ΊඞཁͳϥΠϒϥϦΛEMPQFOͯ͋͠Δͱ ࣮ߦ࣌ʹίϯύΠϧ͞ΕΔίʔυͷத͔Β ͦͷϥΠϒϥϦͷ͕ؔԿͱͳ͘ݺΔ
ϦϯΧΛΘͣʹͲ͏ͬͯ ґଘϥΠϒϥϦΛϦϯΫ͍ͯ͠Δͷ͔ EMGDO104*9ݻ༗ --7.ʹ γεςϜͷμΠφϛοΫϩʔυΛநԽͨ͠ ͕ؔ༻ҙ͞Ε͍ͯΔ ͨͩ͠ϩʔυ͚ͩ MMWNTZT%ZOBNJD-JCSBSZ-PBE-JCSBSZ1FSNBOFOUMZ
ϦϯΧΛΘͣʹͲ͏ͬͯ ґଘϥΠϒϥϦΛϦϯΫ͍ͯ͠Δͷ͔ JODMVEFKQFHMJCI JOUNBJO \ TUSVDUKQFH@DPNQSFTT@TUSVDUDJOGP KQFH@DSFBUF@DPNQSFTT DJOGP ^
MJCKQFH͕ཁΔ ࣮ߦ։࢝ MJCKQFHΛ μΠφϛοΫϩʔυ ࠨ্ͷίʔυΛ +*5ίϯύΠϧ ͜ͷ࣌ͰEMGDO͔Βݟ͑Δͱ͜Ζʹ MJCKQFHͷγϯϘϧ͕͋ΔͷͰ Կࣄແ͔͔ͬͨͷΑ͏ʹ࣮ߦग़དྷΔ
int main() {! float a = 5.0f;! std::vector< boost::filesystem::path >
f;! f.push_back( "hoge.cpp" );! f.push_back( "fuga.cpp" );! dcompile::dynamic_compiler dc;! dc.getLoader().enableSystemPath();! if( !dc.getLoader().load( "jpeg" ) )! throw Ouch();! dc.getHeaderPath().enableSystemPath();! dcompile::module lib = dc( f.begin(), f.end() );! boost::optional< dcompile::function > foo =! lib.getFunction( "foo" );! if( foo )! (*foo)( &a );! else! throw Ouch();! std::cout << a << " outside" << std::endl;! } f.push_back( "hoge.cpp" );! f.push_back( "fuga.cpp" ); dcompile::dynamic_compiler dc; dc.getLoader().enableSystemPath();! if(! !dc.getLoader().load( "jpeg" ) )! throw Ouch(); dc.getHeaderPath()! .enableSystemPath(); dcompile::module lib =! dc( f.begin(), f.end() ); boost::optional<! dcompile::function! > foo = lib.getFunction( "foo" ); (*foo)( &a );
#include <jpeglib.h>! extern "C" void moo( float *a );! extern
"C" void foo( float *a ) {! struct jpeg_compress_struct cinfo;! jpeg_create_compress( &cinfo );! moo( a );! } #include <iostream>! extern "C"! void moo( float *a ) {! std::cout << *a << " inslide" << std::endl;! std::cout << "Hello, world!" << std::endl;! *a += 0.1f;! } IPHFDQQ GVHBDQQ
ಉҰϓϩηε ϗετίʔυ MJCKQFH NBJO qPBUB IPHFDQQ GPP GVHBDQQ NPP ॲཧͷྲྀΕ
JOTMJEF )FMMP XPSME PVUTJEF ͳΜ͔ ૿͑ͯΔ
%ͳΜͱ͔͞Μ͕࡞ͬͨ #0045@11ͩΒ͚ͷίʔυ தͳΜͱ͔͞Μ͕࡞ͬͨ DPOTUFYQSͩΒ͚ͷίʔυ ࣮ߦ࣌ʹ࣮ߦग़དྷΔʂ ͍͢͝ʂ ࠷ॳ͔Β࣮ߦ࣌ʹॲཧ͢ΔΑ͏ʹॻ͚ʂ
DMBOHͷา͖ํ DMBOHͷιʔεʹؔ͢Δ࠷ݶͷυΩϡϝϯτ ͦΕEPYZHFO DMBOHͷιʔεʹؔ͢ΔৄࡉͳυΩϡϝϯτ ͦΕιʔε Θ͔Βͳ͍͜ͱιʔεʹฉ͚
DMBOHͷา͖ํ --7.ͱDMBOHͷࠓ͕Θ͔Δ ߪಡແྉ HJUDMPOFIUUQMMWNPSHHJUMMWNHJU DEMMWNUPPMT HJUDMPOFIUUQMMWNPSHHJUDMBOHHJU ࠓ͙͢DMPOF
DMBOHͷา͖ํ ͰɺͲ͔͜ΒಡΊྑ͍ͷ NBJO͔ؔΒͩΖKL 0XOJOH1US$PNQJMBUJPO$ 5IF%SJWFS#VJME$PNQJMBUJPO BSHW JOU3FT DPOTU$PNNBOE 'BJMJOH$PNNBOE
JG $HFU 3FT5IF%SJWFS&YFDVUF$PNQJMBUJPO $ 'BJMJOH$PNNBOE --7.@4063$&@%*3 UPPMTDMBOHUPPMTESJWFSESJWFSDQQ DMBOHίϚϯυͷNBJOؔͷࡏॲ ߦ͋ͨΓ͔ΒNBJO
DMBOHͷา͖ํ JOU3FT$&YFDVUF+PC $HFU+PCT 'BJMJOH$PNNBOE --7.@4063$&@%*3 UPPMTDMBOHMJC%SJWFS%SJWFSDQQ ߦ͋ͨΓ͔Β&YFDVUF$PNQJMBUJPO
--7.@4063$&@%*3 UPPMTDMBOHMJC%SJWFS$PNQJMBUJPODQQ ߦ͋ͨΓ͔Β&YVFDVUF+PC MMWNTZT1SPHSBN&YFDVUF"OE8BJU 1SPH "SHW FOW 3FEJSFDUT TFDPOET5P8BJU NFNPSZ-JNJU &SSPS ॲཧͷஈ֊ຖʹׂͯ͠DMBOHΛݺͼ͢
DMBOHͷา͖ํ JG BSHWTJ[F 4USJOH3FG BSHW<> TUBSUTXJUI DD \ 4USJOH3FG5PPMBSHW<>
! JG 5PPM SFUVSODD@NBJO BSHWEBUB BSHWEBUB BSHWTJ[F BSHW<> WPJE JOUQUS@U (FU&YFDVUBCMF1BUI JG 5PPMBT SFUVSODDBT@NBJO BSHWEBUB BSHWEBUB BSHWTJ[F BSHW<> WPJE JOUQUS@U (FU&YFDVUBCMF1BUI ! 3FKFDUVOLOPXOUPPMT MMWNFSST FSSPSVOLOPXOJOUFHSBUFEUPPM5PPMaO SFUVSO ^ --7.@4063$&@%*3 UPPMTDMBOHUPPMTESJWFSESJWFSDQQ ߦ͋ͨΓ͔ΒNBJO
DMBOHͷา͖ํ MMWN*OJUJBMJ[F"MM5BSHFUT MMWN*OJUJBMJ[F"MM5BSHFU.$T MMWN*OJUJBMJ[F"MM"TN1SJOUFST MMWN*OJUJBMJ[F"MM"TN1BSTFST
--7.@4063$&@%*3 UPPMTDMBOHUPPMTESJWFSDD@NBJODQQ ߦ͋ͨΓ͔ΒDD@NBJO MMWNͷ͍͍ՃݮͳॳظԽ 4VDDFTT&YFDVUF$PNQJMFS*OWPDBUJPO $MBOHHFU --7.@4063$&@%*3 UPPMTDMBOHMJC'SPOUFOE5PPM&YFDVUF$PNQJMFS*OWPDBUJPODQQ bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { ߦ͋ͨΓ͔Β&YFDVUF$PNQJMFS*OWPDBUJPO
DMBOHͷา͖ํ ॏཁΫϥε$PNQJMFS*OTUBODF $PNQJMFS*OTUBOD 'JMF.BOBHFS 4PVSDF.BOBHFS %JBHOPTUJDT "DUJPO 5BSHFU0QUJPO
DMBOHͷา͖ํ ॏཁΫϥε$PNQJMFS*OTUBODF Success = Clang->ExecuteAction(*Act); --7.@4063$&@%*3 UPPMTDMBOHMJC'SPOUFOE5PPM&YFDVUF$PNQJMFS*OWPDBUJPODQQ ߦ͋ͨΓ͔Β&YFDVUF$PNQJMFS*OWPDBUJPO OwningPtr<FrontendAction>
Act(CreateFrontendAction(*Clang)); "DUJPOΛ$PNQJMFS*OTUBODFʹͯ͠ &YFDVUF"DUJPO͢Δ $PNQJMFS*OTUBODF͕ύʔαΛݺͼग़͠ ߏจղੳͷ݁Ռݟ͔ͭͬͨཁૉʹԠͯ͡ "DUJPOͷରԠ͢Δϝϯό͕ؔݺΕΔ
DMBOHͷา͖ํ ࠷ॳ͔Β༻ҙ͞Ε͍ͯΔΞΫγϣϯ &NJU"TTFNCMZ"DUJPO &NJU#$"DUJPO &NJU--7."DUJPO &NJU--7.0OMZ"DUJPO &NJU$PEF(FO0OMZ"DUJPO &NJU0CK"DUJPO 0CK·Ͱ͍࣋ͬͯͬͯ͠·͏ͱ ϦϯΫग़དྷͳͯ͘٧Ή
--7.ͷา͖ํ ෳͷ--7.Ϟδϡʔϧ CDͱ͔͍ͭͯΔͭ Λ ͭͷ--7.Ϟδϡʔϧʹ·ͱΊΔ --7.-JOLFSʹ͞ΕͨϞδϡʔϧ --7.-JOLFS͕ղ์͢Δ --7.-JOLFS͕࡞ͬͨϞδϡʔϧ ໌ࣔతʹࢦఆ͠ͳ͍ͱ--7.-JOLFS͕ղ์͢Δ #$
#$ #$ ϦϯΫ
--7.ͷา͖ํ ग़དྷ্͕ͬͨϞδϡʔϧ Ͳ͏࣮ͬͯߦ͢Ε͍͍ͷ ιʔεʹฉ͚ʂ --7.@4063$&@%*3 UPPMTMMJMMJDQQ ߦ͋ͨΓ͔ΒNBJO *OJUJBMJ[F/BUJWF5BSHFU
*OJUJBMJ[F/BUJWF5BSHFU"TN1SJOUFS ωΠςΟϒλʔήοτͷॳظԽ
--7.ͷา͖ํ ϞδϡʔϧΛ&OHJOF#VJMEFSʹ͠ λʔήοτΛࢦఆͯ͠ ΠϯλϓϦλ࣮ߦ͔+*5ίϯύΠϧ͔બͼ &YFDVUJPO&OHJOFΛੜ͢Δ &OHJOF#VJMEFSCVJMEFS .PE CVJMEFSTFU."SDI ."SDI
CVJMEFSTFU.$16 .$16 CVJMEFSTFU."UUST ."UUST CVJMEFSTFU6TF.$+*5 USVF &&CVJMEFSDSFBUF
--7.ͷา͖ํ &&SVO4UBUJD$POTUSVDUPST%FTUSVDUPST GBMTF ϞδϡʔϧͷίϯετϥΫλΛ࣮ߦ JOU3FTVMU&&SVO'VODUJPO"T.BJO &OUSZ'O *OQVU"SHW FOWQ
ࢦఆͨؔ͠ΛNBJOؔͱݟͳ࣮ͯ͠ߦ ࣗͰҾΛਖ਼͘͠ઃఆ͢Ε NBJOؔͱܕͷҧ͏͔ؔΒ࣮ߦ͢Δ͜ͱՄೳ (FOFSJD7BMVF3FTVMUFOHJOFSVO'VODUJPO &OUSZ'O "SHT &&SVO4UBUJD$POTUSVDUPST%FTUSVDUPST USVF ϞδϡʔϧͷσετϥΫλΛ࣮ߦ
MJCDMBOHʹ͍ͭͯ DMBOHͷϥΠϒϥϦͬͯࠓྲྀߦͷMJCDMBOH ͕͍ͪ·͢ DMBOHͷϥΠϒϥϦ܉ஂ MJCDMBOH"3$.JHSBUF MJCDMBOH"45B MJCDMBOH"OBMZTJTB MJCDMBOH#BTJDB MJCDMBOH$PEF(FOB MJCDMBOH%SJWFSB
MJCDMBOHTP DMBOHͷϥΠϒϥϦΛ $ݴޠΠϯλʔϑΣʔεͰ ϥοϓͨ͠ͷ
MJCDMBOHʹ͍ͭͯ MJCDMBOH͞Μ ߏจղੳΛߦ͏ͱ͜Ζ·Ͱ͔͠ϥοϓ͍ͯ͠ͳ͍ MJCDMBOHͰݡ͍γϯλοΫεͱ͔͋ͬͯ MJCDMBOHͰίϯύΠϧͱ͔ฉ͔ͳ͍ͷͦͷͨΊ $ FSϥούΛհ͞ͳͯ͘ શͯͷϥΠϒϥϦΛར༻Ͱ͖Δ MJCDMBOHͱ͔͍ΒΜ͔ͬͨΜʂ $
FSʹݶΔ
ϦϯΫ͖͢ϥΠϒϥϦ 2DMBOHͱ--7.ͷϥΠϒϥϦࢁ͋Γ·͕͢ɺ ࣗͷίʔυΛಈ͔ͨ͢Ίʹඞཁͳͷ ͲΕͱͲΕͰ͠ΐ͏ ͲͷγϯϘϧ͕ͲͷϥΠϒϥϦʹؚ·Ε͍ͯΔ͔ Ͳ͜ʹॻ͔Ε͍ͯͳ͍ "શ෦ϦϯΫ͔ͯ͠Βͭͮͭ֎ͯ͠Έͯɺ ϦϯΫΤϥʔ͕ग़ΔϠπͬͯΔʂ
ϦϯΫ͖͢ϥΠϒϥϦ MJCDMBOH"3$.JHSBUF MJCDMBOH"45B MJCDMBOH"OBMZTJTB MJCDMBOH#BTJDB MJCDMBOH$PEF(FOB MJCDMBOH%SJWFSB MJCDMBOH&EJUB MJCDMBOH'SPOU&OEB MJCDMBOH'SPOU&OE5PPM
MJCDMBOH*OEFYB MJCDMBOH-FYB MJCDMBOH1BSTFB MJCDMBOH3FXSJUFB MJCDMBOH4FNBB MJCDMBOH4FSJBMJ[BUJPO MJC--7."TN1BSTFSB MJC--7."TN1SJOUFSB MJC--7.#JU3FBEFSB MJC--7.&YFDVUJPO&OHJOF MJC--7.+*5B MJC--7..$+*5B MJC--7.$PEF(FOB MJC--7.JQPB MJC--7.$PSFB MJC--7.-JOLFSB MJC--7.*OTUSVNFOUBUJPOB MJCEDPNQJMFͷ߹
ݱ࣌Ͱͷ՝ ࣮ߦ࣌ίϯύΠϧ͞Εͨίʔυͷؔݺͼग़࣌͠ ҾͷੵΈํ͕ಾ ݱঢ়όΠτҎԼͷQPEܕ͔ͤ͠ͳ͍ ϓϦϓϩηοαεςʔδͷΈ࣮ߦ͕Ͱ͖ͳ͍ ݱࡏ࣮࡞ۀத --7.ͷόʔδϣϯ্͕͕Δͨͼʹ ΠϯλʔϑΣʔε͕มΘΔ
݁ $ Ͱ࣮ߦ࣌ίϯύΠϧ Ͱ͖Δ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠