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2020-07-30Merge #18011: Replace current benchmarking framework with nanobenchWladimir J. van der Laan
78c312c983255e15fc274de2368a2ec13ce81cbf Replace current benchmarking framework with nanobench (Martin Ankerl) Pull request description: Replace current benchmarking framework with nanobench This replaces the current benchmarking framework with nanobench [1], an MIT licensed single-header benchmarking library, of which I am the autor. This has in my opinion several advantages, especially on Linux: * fast: Running all benchmarks takes ~6 seconds instead of 4m13s on an Intel i7-8700 CPU @ 3.20GHz. * accurate: I ran e.g. the benchmark for SipHash_32b 10 times and calculate standard deviation / mean = coefficient of variation: * 0.57% CV for old benchmarking framework * 0.20% CV for nanobench So the benchmark results with nanobench seem to vary less than with the old framework. * It automatically determines runtime based on clock precision, no need to specify number of evaluations. * measure instructions, cycles, branches, instructions per cycle, branch misses (only Linux, when performance counters are available) * output in markdown table format. * Warn about unstable environment (frequency scaling, turbo, ...) * For better profiling, it is possible to set the environment variable NANOBENCH_ENDLESS to force endless running of a particular benchmark without the need to recompile. This makes it to e.g. run "perf top" and look at hotspots. Here is an example copy & pasted from the terminal output: | ns/byte | byte/s | err% | ins/byte | cyc/byte | IPC | bra/byte | miss% | total | benchmark |--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|---------------:|--------:|----------:|:---------- | 2.52 | 396,529,415.94 | 0.6% | 25.42 | 8.02 | 3.169 | 0.06 | 0.0% | 0.03 | `bench/crypto_hash.cpp RIPEMD160` | 1.87 | 535,161,444.83 | 0.3% | 21.36 | 5.95 | 3.589 | 0.06 | 0.0% | 0.02 | `bench/crypto_hash.cpp SHA1` | 3.22 | 310,344,174.79 | 1.1% | 36.80 | 10.22 | 3.601 | 0.09 | 0.0% | 0.04 | `bench/crypto_hash.cpp SHA256` | 2.01 | 496,375,796.23 | 0.0% | 18.72 | 6.43 | 2.911 | 0.01 | 1.0% | 0.00 | `bench/crypto_hash.cpp SHA256D64_1024` | 7.23 | 138,263,519.35 | 0.1% | 82.66 | 23.11 | 3.577 | 1.63 | 0.1% | 0.00 | `bench/crypto_hash.cpp SHA256_32b` | 3.04 | 328,780,166.40 | 0.3% | 35.82 | 9.69 | 3.696 | 0.03 | 0.0% | 0.03 | `bench/crypto_hash.cpp SHA512` [1] https://github.com/martinus/nanobench ACKs for top commit: laanwj: ACK 78c312c983255e15fc274de2368a2ec13ce81cbf Tree-SHA512: 9e18770b18b6f95a7d0105a4a5497d31cf4eb5efe6574f4482f6f1b4c88d7e0946b9a4a1e9e8e6ecbf41a3f2d7571240677dcb45af29a6f0584e89b25f32e49e
2020-07-28devtools: Add security check for separate_codeWladimir J. van der Laan
Check that sections are appropriately separated in virtual memory, based on their (expected) permissions. This checks for missing -Wl,-z,separate-code and potentially other problems. Co-authored-by: fanquake <fanquake@gmail.com>
2020-07-21contrib: Clean up previous_releases.pyMarcoFalke
* Replace curl single char options with their verbose counterpart * Stricter check for tarballHash
2020-07-21Merge #19205: script: previous_release.sh rewritten in pythonMarcoFalke
9c34aff39309b8adc99d347e07b6ddb5366498e9 Remove previous_release.sh (Brian Liotti) e1e5960e10a9329d9f55a3967d546ffbdd896030 script: Add previous_release.py (Brian Liotti) Pull request description: Closes #18132 Added functionality: 1) checks file hash before untarring when using the binary download option ACKs for top commit: fjahr: re-ACK 9c34aff39309b8adc99d347e07b6ddb5366498e9 Sjors: tACK 9c34aff39309b8adc99d347e07b6ddb5366498e9 Tree-SHA512: 323f11828736a372a47f048592de8b027ddcd75b38f312dfc73f7b495d1e078bfeb384d9cdf434b3e70f2c6c0ce2da2df48e9a6460ac0e1967c6829a411c52d5
2020-07-21Make test DoS_mapOrphans deterministicDavid Reikher
The RandomOrphan function and the function ecdsa_signature_parse_der_lax in pubkey.cpp were causing non-deterministic test coverage. Force seed in the beginning of the test to make it deterministic. The seed is selected carefully so that all branches of the function ecdsa_signature_parse_der_lax are executed. Prior to this fix, the test was exhibiting non-deterministic coverage since none of the ECDSA signatures that were generated during the test had leading zeroes in either R, S, or both, resulting in some branches of said function not being executed. The seed ensures that both conditions are hit. Removed denialofservice_tests test entry from the list of non-deterministic tests in the coverage script.
2020-07-05Remove previous_release.shBrian Liotti
2020-07-05script: Add previous_release.pyBrian Liotti
closes #18132 added GPG verify for binaries co-authored-by: bboot <bboot@cisco.com>
2020-06-16test: use subprocess.run() in test-security-check.pyfanquake
2020-06-16tests: run test-security-check.py in CIfanquake
2020-06-13Replace current benchmarking framework with nanobenchMartin Ankerl
This replaces the current benchmarking framework with nanobench [1], an MIT licensed single-header benchmarking library, of which I am the autor. This has in my opinion several advantages, especially on Linux: * fast: Running all benchmarks takes ~6 seconds instead of 4m13s on an Intel i7-8700 CPU @ 3.20GHz. * accurate: I ran e.g. the benchmark for SipHash_32b 10 times and calculate standard deviation / mean = coefficient of variation: * 0.57% CV for old benchmarking framework * 0.20% CV for nanobench So the benchmark results with nanobench seem to vary less than with the old framework. * It automatically determines runtime based on clock precision, no need to specify number of evaluations. * measure instructions, cycles, branches, instructions per cycle, branch misses (only Linux, when performance counters are available) * output in markdown table format. * Warn about unstable environment (frequency scaling, turbo, ...) * For better profiling, it is possible to set the environment variable NANOBENCH_ENDLESS to force endless running of a particular benchmark without the need to recompile. This makes it to e.g. run "perf top" and look at hotspots. Here is an example copy & pasted from the terminal output: | ns/byte | byte/s | err% | ins/byte | cyc/byte | IPC | bra/byte | miss% | total | benchmark |--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|---------------:|--------:|----------:|:---------- | 2.52 | 396,529,415.94 | 0.6% | 25.42 | 8.02 | 3.169 | 0.06 | 0.0% | 0.03 | `bench/crypto_hash.cpp RIPEMD160` | 1.87 | 535,161,444.83 | 0.3% | 21.36 | 5.95 | 3.589 | 0.06 | 0.0% | 0.02 | `bench/crypto_hash.cpp SHA1` | 3.22 | 310,344,174.79 | 1.1% | 36.80 | 10.22 | 3.601 | 0.09 | 0.0% | 0.04 | `bench/crypto_hash.cpp SHA256` | 2.01 | 496,375,796.23 | 0.0% | 18.72 | 6.43 | 2.911 | 0.01 | 1.0% | 0.00 | `bench/crypto_hash.cpp SHA256D64_1024` | 7.23 | 138,263,519.35 | 0.1% | 82.66 | 23.11 | 3.577 | 1.63 | 0.1% | 0.00 | `bench/crypto_hash.cpp SHA256_32b` | 3.04 | 328,780,166.40 | 0.3% | 35.82 | 9.69 | 3.696 | 0.03 | 0.0% | 0.03 | `bench/crypto_hash.cpp SHA512` [1] https://github.com/martinus/nanobench * Adds support for asymptotes This adds support to calculate asymptotic complexity of a benchmark. This is similar to #17375, but currently only one asymptote is supported, and I have added support in the benchmark `ComplexMemPool` as an example. Usage is e.g. like this: ``` ./bench_bitcoin -filter=ComplexMemPool -asymptote=25,50,100,200,400,600,800 ``` This runs the benchmark `ComplexMemPool` several times but with different complexityN settings. The benchmark can extract that number and use it accordingly. Here, it's used for `childTxs`. The output is this: | complexityN | ns/op | op/s | err% | ins/op | cyc/op | IPC | total | benchmark |------------:|--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|----------:|:---------- | 25 | 1,064,241.00 | 939.64 | 1.4% | 3,960,279.00 | 2,829,708.00 | 1.400 | 0.01 | `ComplexMemPool` | 50 | 1,579,530.00 | 633.10 | 1.0% | 6,231,810.00 | 4,412,674.00 | 1.412 | 0.02 | `ComplexMemPool` | 100 | 4,022,774.00 | 248.58 | 0.6% | 16,544,406.00 | 11,889,535.00 | 1.392 | 0.04 | `ComplexMemPool` | 200 | 15,390,986.00 | 64.97 | 0.2% | 63,904,254.00 | 47,731,705.00 | 1.339 | 0.17 | `ComplexMemPool` | 400 | 69,394,711.00 | 14.41 | 0.1% | 272,602,461.00 | 219,014,691.00 | 1.245 | 0.76 | `ComplexMemPool` | 600 | 168,977,165.00 | 5.92 | 0.1% | 639,108,082.00 | 535,316,887.00 | 1.194 | 1.86 | `ComplexMemPool` | 800 | 310,109,077.00 | 3.22 | 0.1% |1,149,134,246.00 | 984,620,812.00 | 1.167 | 3.41 | `ComplexMemPool` | coefficient | err% | complexity |--------------:|-------:|------------ | 4.78486e-07 | 4.5% | O(n^2) | 6.38557e-10 | 21.7% | O(n^3) | 3.42338e-05 | 38.0% | O(n log n) | 0.000313914 | 46.9% | O(n) | 0.0129823 | 114.4% | O(log n) | 0.0815055 | 133.8% | O(1) The best fitting curve is O(n^2), so the algorithm seems to scale quadratic with `childTxs` in the range 25 to 800.
2020-06-07ci: Switch to bitcoincore.org downloadMarcoFalke
2020-05-14scripts: add additional type annotations to security-check.pyfanquake
2020-05-14scripts: add run_command to security-check.pyfanquake
Deduplicate all the subprocess code as mentioned in 18713.
2020-05-14scripts: remove NONFATAL from security-check.pyfanquake
2020-05-14scripts: no-longer check for 32 bit windows in security-check.pyfanquake
2020-05-05Merge #18885: contrib: Move optimize-pngs.py script to the maintainer repoMarcoFalke
fa13090d2048c9a1e475eb25de756763f8adddb8 contrib: Remove optimize-pngs.py script, which lives in the maintainer repo (MarcoFalke) Pull request description: Moved to https://github.com/bitcoin-core/bitcoin-maintainer-tools/blob/master/optimize-pngs.py Bitcoin Core should focus on the full node implementation, not on scripts to compress png images. This script is only used when new PNG files are added to the repo. This happens about once every two years. So fetching the script from the other repo should not be a burden, but removing it from this repo is going to cut down on the meta files we need to maintain in the main repo. ACKs for top commit: practicalswift: ACK fa13090d2048c9a1e475eb25de756763f8adddb8 -- `+0 lines, -82 lines` :) promag: ACK fa13090d2048c9a1e475eb25de756763f8adddb8. hebasto: ACK fa13090d2048c9a1e475eb25de756763f8adddb8, verified that script is already [moved](https://github.com/bitcoin-core/bitcoin-maintainer-tools/pull/56). Tree-SHA512: 37d111adae769bcddc6ae88041032d5a2b8b228fec67f555c8333c38de3992f5138b30bea868d7d6d6b7f966a47133e5853134373b149ab23cba3b8b560ecb31
2020-05-05contrib: Remove optimize-pngs.py script, which lives in the maintainer repoMarcoFalke
https://github.com/bitcoin-core/bitcoin-maintainer-tools/blob/master/optimize-pngs.py
2020-04-23scripts: add PE .reloc section check to security-check.pyfanquake
2020-04-21scripts: add MACHO LAZY_BINDINGS test to test-security-check.pyfanquake
I didn't add the relevant test in #18295.
2020-04-21scripts: add MACHO Canary check to security-check.pyfanquake
2020-04-16scripted-diff: Bump copyright headersMarcoFalke
-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT-
2020-04-04scripts: add MACHO lazy bindings check to security-check.pyfanquake
2020-04-03Merge #18426: scripts: previous_release: improve behaviour on failed downloadfanquake
332f373a9dece71717f75eb06e6a1fc957f2952b [scripts] previous_release: improve failed download error message (Sebastian Falbesoner) Pull request description: Currently, if the earlier release build/fetch script `previous_release.sh` is invoked with the option `-b` (intending to fetch a binary package from `https://bitcoin.org`) and the download fails, the user sees the following confusing output: ``` $ contrib/devtools/previous_release.sh -r -b v0.9.5 [...] gzip: stdin: not in gzip format tar: Child returned status 1 tar: Error is not recoverable: exiting now ``` This implies that the download worked, but the archive is corrupted, when in reality the HTML document containing the delivery fail reason (most likely 404 Not Found) is saved and tried to get unpacked. In contrast to wget, curl is a bit stubborn and needs explicit instructions to react to server errors via the flag `-f` (outputs error message and returns error code, ideal for scripts): https://curl.haxx.se/docs/manpage.html#-f On the PR branch, the output on failed download looks now the following: ``` $ contrib/devtools/previous_release.sh -r -b v0.9.5 [...] curl: (22) The requested URL returned error: 404 Not Found Download failed. ``` ACKs for top commit: fanquake: ACK 332f373a9dece71717f75eb06e6a1fc957f2952b Tree-SHA512: 046c931ad9e78aeb2d13faa4866d46122ed325aa142483547c2b04032d03223ed2411783b00106fcab0cd91b2f78691531ac526ed7bb3ed7547b6e2adbfb2e93
2020-03-26scripts: rename test_64bit_PE to test_PEfanquake
2020-03-26scripts: add MACHO NX check to security-check.pyfanquake
2020-03-26scripts: add MACHO tests to test-security-check.pyfanquake
2020-03-25[scripts] previous_release: improve failed download error messageSebastian Falbesoner
before: ------------------------------------------------------------ $ contrib/devtools/previous_release.sh -r -b v0.9.5 [...] gzip: stdin: not in gzip format tar: Child returned status 1 tar: Error is not recoverable: exiting now ------------------------------------------------------------ now: ------------------------------------------------------------ $ contrib/devtools/previous_release.sh -r -b v0.9.5 [...] curl: (22) The requested URL returned error: 404 Not Found Download failed. ------------------------------------------------------------
2020-03-22scripts: add PE dylib checking to symbol-check.pyfanquake
2020-02-11[scripts] support release candidates of earlier releasesSjors Provoost
2020-02-11[scripts] build earlier releasesSjors Provoost
2020-01-28test: Add crc32c exception to various linters and generation scriptsWladimir J. van der Laan
2020-01-27test: rename test suite name "tx_validationcache_tests" to match filenameSebastian Falbesoner
Quoting src/test/README.md, 'Adding test cases': "The file naming convention is `<source_filename>_tests.cpp` and such files should wrap their tests in a test suite called `<source_filename>_tests`." Currently the unit test source file txvalidationcache_tests.cpp contains a unit test suite with the name tx_validationcache_tests, which is fixed by this commit. The following shell script shows that this is the only mismatch and for all other unit test source files the test suite names are correct: #!/bin/bash shopt -s globstar for test_full_filename in **/*_tests.cpp; do test_name_file=`basename $test_full_filename .cpp` test_name_suite=`sed -n "s/^.*TEST_SUITE(\(.*_tests\).*$/\1/p" $test_full_filename` if [ $test_name_file != $test_name_suite ]; then echo "TestFilename: $test_name_file != TestSuitname: $test_name_suite" fi done
2020-01-22Merge #17863: scripts: Add MACHO dylib checks to symbol-check.pyWladimir J. van der Laan
c491368d8cfddf3a5b6d574f10ed67492fcecbed scripts: add MACHO dylib checking to symbol-check.py (fanquake) 76bf97213f4b153dd3ccf1314088a73c4804601d scripts: fix check-symbols & check-security argument passing (fanquake) Pull request description: Based on #17857. This adds dynamic library checks for MACHO executables to symbol-check.py. The script has been modified to function more like `security-check.py`. The error output is now also slightly different. i.e: ```bash # Linux x86 bitcoin-cli: symbol operator new[](unsigned long) from unsupported version GLIBCXX_3.4 bitcoin-cli: export of symbol vtable for std::basic_ios<char, std::char_traits<char> > not allowed bitcoin-cli: NEEDED library libstdc++.so.6 is not allowed bitcoin-cli: failed IMPORTED_SYMBOLS EXPORTED_SYMBOLS LIBRARY_DEPENDENCIES # RISCV (skips exported symbols checks) bitcoin-tx: symbol operator new[](unsigned long) from unsupported version GLIBCXX_3.4 bitcoin-tx: NEEDED library libstdc++.so.6 is not allowed bitcoin-tx: failed IMPORTED_SYMBOLS LIBRARY_DEPENDENCIES # macOS Checking macOS dynamic libraries... libboost_filesystem.dylib is not in ALLOWED_LIBRARIES! bitcoind: failed DYNAMIC_LIBRARIES ``` Compared to `v0.19.0.1` the macOS allowed dylibs has been slimmed down somewhat: ```diff src/qt/bitcoin-qt: /usr/lib/libSystem.B.dylib -/System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation -/System/Library/Frameworks/Security.framework/Versions/A/Security -/System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration /System/Library/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics -/System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL -/System/Library/Frameworks/AGL.framework/Versions/A/AGL /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon /usr/lib/libc++.1.dylib -/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork /System/Library/Frameworks/CoreText.framework/Versions/A/CoreText /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO /usr/lib/libobjc.A.dylib ``` ACKs for top commit: laanwj: ACK c491368d8cfddf3a5b6d574f10ed67492fcecbed Tree-SHA512: f8624e4964e80b3e0d34e8d3cc33f3107938f3ef7a01c07828f09b902b5ea31a53c50f9be03576e1896ed832cf2c399e03a7943a4f537a1e1c705f3804aed979
2020-01-16Merge #17691: doc: Add missed copyright headersMarcoFalke
fac86ac7b3ceac2f884412c7a9f4bd5bab5e3916 scripted-diff: Add missed copyright headers (Hennadii Stepanov) 6fde9d5e47fc9a1042b3fb68031eab5bf55e508d script: Update EXLUDE list in copyright_header.py (Hennadii Stepanov) 1998152f15fd2b0e83f5068c375a34feaf73db8c script: Add empty line after C++ copyright (Hennadii Stepanov) 071f2fc204f542c5a287ca8835115a2ee0bf2f50 script: Add ability to insert copyright to *.sh (Hennadii Stepanov) Pull request description: This PR improves `contrib/devtools/copyright_header.py` script and adds copyright headers to the files in `src` and `test` directories with two exceptions: - [`src/reverse_iterator.h`](https://github.com/bitcoin/bitcoin/blob/master/src/reverse_iterator.h) (added to exceptions) - [`src/test/fuzz/FuzzedDataProvider.h`](https://github.com/bitcoin/bitcoin/blob/master/src/test/fuzz/FuzzedDataProvider.h) (added to exceptions) On master 5622d8f3156a293e61d0964c33d4b21d8c9fd5e0: ``` $ ./contrib/devtools/copyright_header.py report . | grep zero 25 with zero copyrights ``` With this PR: ``` $ ./contrib/devtools/copyright_header.py report . | grep zero 2 with zero copyrights ``` ~I am uncertain about our copyright policy with `build_msvc` and `contrib` directories content, so they are out of scope of this PR.~ ACKs for top commit: MarcoFalke: ACK fac86ac7b3ceac2f884412c7a9f4bd5bab5e3916 Tree-SHA512: d7832c4a7a1a3b7806119775b40ec35d7982f49ff0e6199b8cee4c0e0a36e68d51728b6ee9924b1c161df4bc6105bd93391b79d42914357fa522f499cb113fa8
2020-01-15scripted-diff: Bump copyright of files changed in 2020MarcoFalke
-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT-
2020-01-04scripted-diff: Add missed copyright headersHennadii Stepanov
-BEGIN VERIFY SCRIPT- s() { contrib/devtools/copyright_header.py insert "$1"; } s build_msvc/bitcoin_config.h s build_msvc/msvc-autogen.py s build_msvc/testconsensus/testconsensus.cpp s contrib/devtools/circular-dependencies.py s contrib/devtools/gen-manpages.sh s contrib/filter-lcov.py s contrib/gitian-build.py s contrib/install_db4.sh s src/crypto/sha256_avx2.cpp s src/crypto/sha256_sse41.cpp s src/fs.cpp s src/qt/test/addressbooktests.cpp s src/qt/test/addressbooktests.h s src/qt/test/util.cpp s src/qt/test/util.h s src/qt/test/wallettests.cpp s src/qt/test/wallettests.h s src/test/blockchain_tests.cpp s test/functional/combine_logs.py s test/lint/lint-locale-dependence.sh sed -i '1G' test/lint/lint-shebang.sh s test/lint/lint-shebang.sh -END VERIFY SCRIPT-
2020-01-04scripts: add MACHO dylib checking to symbol-check.pyfanquake
2020-01-03script: Update EXLUDE list in copyright_header.pyHennadii Stepanov
2020-01-03script: Add empty line after C++ copyrightHennadii Stepanov
2020-01-03script: Add ability to insert copyright to *.shHennadii Stepanov
2020-01-02scripts: add MACHO NOUNDEFS check to security-check.pyfanquake
2020-01-02scripts: add MACHO PIE check to security-check.pyfanquake
2019-12-30scripted-diff: Bump copyright of files changed in 2019MarcoFalke
-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT-
2019-11-23build: Allow export of environ symbolsWladimir J. van der Laan
This export was introduced in #17270 which added ``` //! Necessary on some platforms extern char** environ; ```
2019-11-22build: Bump minimum versions in symbol checkerWladimir J. van der Laan
Debian 8 (Jessie) has: - g++ version 4.9.2 - libc version 2.19 Ubuntu 16.04.4 (Xenial) has: - g++ version 5.3.1 - libc version 2.23.0 CentOS 7 has: - g++ version 4.8.5 - libc version 2.17 Taking the minimum of these as our target. According to the GNU ABI document this corresponds to: - GCC 4.8.5: GCC_4.8.0 - (glibc) GLIBC_2_17 Co-Authored-By: fanquake <fanquake@gmail.com>
2019-11-22build: Disallow dynamic linking against c++ libraryWladimir J. van der Laan
Ever since statically linking Qt, we've been linking the C++ library statically too (-static-libstdc++). Take this into account in the symbol checker.
2019-11-20build: remove libanl.so.1 from ALLOWED_LIBRARIESfanquake
2019-11-05devtools: add utxo_snapshot.shJames O'Beirne
to allow easy (if not time-consuming) generation and verification of snapshots.
2019-10-04scripts: update copyright_header script to include additional filesgchuf
Includes .sh and .bash-completion files in the script as well
2019-09-03devtools: Accomodate block-style copyright blocksBen Woosley
Without this, `copyright_header.py report . verbose` reports: ------------------------------------------------------------------------------- 1 with unexpected copyright holder names ./build_msvc/libsecp256k1_config.h -------------------------------------------------------------------------------