libarchive and some compression libs

[jeroen]

This is primarly to support the archive package from CRAN:

configure: sh -c "./configure.orig --build=x86_64-pc-linux-gnu --host=wasm32-unknown-emscripten"

Found pkg-config cflags and libs!
PKG_CONFIG_PATH=/opt/webr/wasm/lib/pkgconfig
PKG_CFLAGS=-I/opt/webr/wasm/include
PKG_LIBS=-L/opt/webr/wasm/lib -larchive -lexpat -llzma -lzstd -llz4 -lbz2 -lz
** libs
using C++ compiler: 'emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.47 (431685f05c67f0424c11473cc16798b9587bb536)'
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c archive.cpp -o archive.o
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c archive_extract.cpp -o archive_extract.o
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c archive_read.cpp -o archive_read.o
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c archive_write.cpp -o archive_write.o
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c archive_write_direct.cpp -o archive_write_direct.o
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c archive_write_files.cpp -o archive_write_files.o
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c cpp11.cpp -o cpp11.o
em++ -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1 -I/opt/webr/wasm/include -fpic  -std=gnu++11 -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -DRCPP_DEMANGLER_ENABLED=0 -D__STRICT_ANSI__ -c r_archive.cpp -o r_archive.o
emcc -DNDEBUG  -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cli/include' -I'/root/R/x86_64-pc-linux-gnu-library/4.3/cpp11/include' -I/opt/webr/wasm/include -I/opt/webr/R/build/R-4.3.0/build/include -I/opt/webr/R/build/R-4.3.0/src/include -s USE_BZIP2=1 -s USE_ZLIB=1  -fpic  -Oz -fPIC -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -std=gnu11 -c connection/connection.c -o connection/connection.o
em++ -s SIDE_MODULE=1 -s WASM_BIGINT -s ASSERTIONS=1 -L/opt/webr/wasm/lib -L/opt/webr/wasm/R-4.3.0/lib/R/lib -s USE_BZIP2=1 -s USE_ZLIB=1 -fwasm-exceptions -s SUPPORT_LONGJMP=wasm -Oz -o archive.so archive.o archive_extract.o archive_read.o archive_write.o archive_write_direct.o archive_write_files.o cpp11.o r_archive.o -L/opt/webr/wasm/lib -larchive -lexpat -llzma -lzstd -llz4 -lbz2 -lz
installing to /tmp/RtmpIsO7Z9/file91f9dd25837/archive/libs
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
* creating tarball
packaged installation of 'archive' as 'archive_1.1.7_R_x86_64-pc-linux-gnu.tar.gz'
* DONE (archive)
Packaging: archive_1.1.7.data

Some other notes:

• The opinionated selection of enabled libarchive feature libraries is taken from the homebrew formula. Typically if features are disabled in homebrew, not many people care about them.
• I am not sure if we manually need to disable threading in libarchive or lz4. The easuest way to test is build the CRAN archive package and try to decompress archives in various formats.
• Some of the other recipes (gdal?) might automatically pick up on zstd or lz4.

[jeroen]

Test with r-universe:

install.packages('archive', repos = 
  c('https://r-lib.r-universe.dev', 'https://cran.r-universe.dev'))
library(archive)

example(archive_read)
example(file_read)

[georgestagg]

Tested build on macOS and confirmed working with example(archive_read), example(file_read), and extracting a sample .rar file