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100 lines
4.0 KiB
100 lines
4.0 KiB
## |
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## re2.spec -- OpenPKG RPM Package Specification |
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## Copyright (c) 2000-2022 OpenPKG Project <http://openpkg.org/> |
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## |
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## Permission to use, copy, modify, and distribute this software for |
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## any purpose with or without fee is hereby granted, provided that |
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## the above copyright notice and this permission notice appear in all |
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## copies. |
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## |
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## THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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## WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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## IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR |
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## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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## USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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## ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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## OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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## SUCH DAMAGE. |
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## |
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# package information |
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Name: re2 |
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Summary: Regular Expression Library for C++ |
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URL: http://code.google.com/p/re2/ |
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Vendor: Google Inc. |
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Packager: OpenPKG Project |
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Distribution: OpenPKG Community |
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Class: EVAL |
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Group: RegExp |
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License: MIT |
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Version: 20200529 |
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Release: 20200529 |
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# list of sources |
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Source0: http://download.openpkg.org/components/versioned/re2/re2-%{version}.tar.xz |
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Patch0: re2.patch |
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# build information |
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BuildPreReq: OpenPKG, openpkg >= 20160101, gcc, gcc::with_cxx = yes |
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PreReq: OpenPKG, openpkg >= 20160101 |
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%description |
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RE2 is Google's fast, safe, thread-friendly alternative to |
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backtracking regular expression engines like those used in PCRE, |
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Perl, and Python. It is a C++ library. Backtracking engines are |
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typically full of features and convenient syntactic sugar but |
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can be forced into taking exponential amounts of time on even |
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small inputs. RE2 uses automata theory to guarantee that regular |
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expression searches run in time linear in the size of the input. |
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RE2 implements memory limits, so that searches can be constrained |
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to a fixed amount of memory. RE2 is engineered to use a small fixed |
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C++ stack footprint no matter what inputs or regular expressions |
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it must process; thus RE2 is useful in multithreaded environments |
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where thread stacks cannot grow arbitrarily large. On large inputs, |
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RE2 is often much faster than backtracking engines; its use of |
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automata theory lets it apply optimizations that the others cannot. |
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Unlike most automata-based engines, RE2 implements almost all the |
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common Perl and PCRE features and syntactic sugars. It also finds |
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the leftmost-first match, the same match that Perl would, and can |
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return submatch information. The one significant exception is that |
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RE2 drops support for backreferences and generalized zero-width |
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assertions, because they cannot be implemented efficiently. The |
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syntax page gives full details. For those who want a simpler syntax, |
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RE2 has a POSIX mode that accepts only the POSIX egrep operators and |
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implements leftmost-longest overall matching. |
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%track |
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prog re2 = { |
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version = %{version} |
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url = http://download.openpkg.org/components/versioned/re2/ |
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regex = re2-(__VER__)\.tar\.gz |
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} |
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%prep |
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%setup -q -n re2 |
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%patch -p0 |
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%build |
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%{l_make} %{l_mflags} \ |
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CC="%{l_cxx}" \ |
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CFLAGS="%{l_cxxflags -O} -I. -c" |
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%install |
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%{l_shtool} mkdir -f -p -m 755 \ |
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$RPM_BUILD_ROOT%{l_prefix}/include/re2 \ |
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$RPM_BUILD_ROOT%{l_prefix}/lib |
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%{l_shtool} install -c -m 644 \ |
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obj/libre2.a $RPM_BUILD_ROOT%{l_prefix}/lib/ |
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%{l_shtool} install -c -m 644 \ |
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re2/re2.h re2/stringpiece.h \ |
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$RPM_BUILD_ROOT%{l_prefix}/include/re2/ |
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%{l_rpmtool} files -v -ofiles -r$RPM_BUILD_ROOT %{l_files_std} |
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%files -f files |
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%clean |
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