On 2021-05-26 13:06, Jon Turney wrote:
Since variables in a .cygport file can be computed from arbitrary shell
expressions, perhaps containing variables that cygport itself defines,
other programs can't determine their value just by parsing the .cygport
file.
Add 'vars' command to output arbitrary variables defined by the .cygport
file.
The idea is that the output from this should be eval-able in a shell to
be further used, but it probably needs some additional escaping (of
newlines?) to be completely right in all cases.
e.g
$ cygport libX11.cygport vars PVR BUILD_REQUIRES
PVR='1.7.1-1'
BUILD_REQUIRES='xtrans xorgproto libxcb-devel xmlto xorg-sgml-doctools
docbook-xml43'
eval $(cygport libX11.cygport vars BUILD_REQUIRES) ; for r in ${BUILD_REQUIRES}
; do echo $r; done
bash "declare -p NAME..." seems to do what you want and produce .source-able
output:
$ ( . mingw64-x86_64-nghttp2/mingw64-x86_64-nghttp2.cygport; declare -p BUILD_REQUIRES DESCRIPTION; echo echo
\$BUILD_REQUIRES \$DESCRIPTION) | bash -svx
-bash: inherit: command not found
declare -- BUILD_REQUIRES="mingw64-x86_64-c-ares mingw64-x86_64-libevent mingw64-x86_64-win-iconv mingw64-x86_64-libxml2
mingw64-x86_64-openssl mingw64-x86_64-zlib libev-devel mingw64-x86_64-binutils mingw64-x86_64-CUnit
mingw64-x86_64-gcc-core mingw64-x86_64-gcc-g++ autoconf automake libtool pkg-config python3-sphinx"
+ declare -- 'BUILD_REQUIRES=mingw64-x86_64-c-ares mingw64-x86_64-libevent mingw64-x86_64-win-iconv
mingw64-x86_64-libxml2 mingw64-x86_64-openssl mingw64-x86_64-zlib libev-devel mingw64-x86_64-binutils
mingw64-x86_64-CUnit mingw64-x86_64-gcc-core mingw64-x86_64-gcc-g++ autoconf automake libtool pkg-config python3-sphinx'
declare -- DESCRIPTION="HTTP/2 and its header compression algorithm HPACK
implementation.
The framing layer of HTTP/2 is implemented as a reusable library.
Also included are an HTTP/2 client, server, proxy, load test and
benchmarking tool, and Python modules.
Package provides Mingw MS VC RT-linked binaries, NOT Cygwin binaries,
for use with the mingw64-x86_64-gcc cross compiler, installed in
/usr/x86_64-w64-mingw32/sys-root/mingw/{bin,lib,include}/."
+ declare -- 'DESCRIPTION=HTTP/2 and its header compression algorithm HPACK
implementation.
The framing layer of HTTP/2 is implemented as a reusable library.
Also included are an HTTP/2 client, server, proxy, load test and
benchmarking tool, and Python modules.
Package provides Mingw MS VC RT-linked binaries, NOT Cygwin binaries,
for use with the mingw64-x86_64-gcc cross compiler, installed in
/usr/x86_64-w64-mingw32/sys-root/mingw/{bin,lib,include}/.'
echo $BUILD_REQUIRES $DESCRIPTION
+ echo mingw64-x86_64-c-ares mingw64-x86_64-libevent mingw64-x86_64-win-iconv mingw64-x86_64-libxml2
mingw64-x86_64-openssl mingw64-x86_64-zlib libev-devel mingw64-x86_64-binutils mingw64-x86_64-CUnit
mingw64-x86_64-gcc-core mingw64-x86_64-gcc-g++ autoconf automake libtool pkg-config python3-sphinx HTTP/2 and its header
compression algorithm HPACK implementation. The framing layer of HTTP/2 is implemented as a reusable library. Also
included are an HTTP/2 client, server, proxy, load test and benchmarking tool, and Python modules. Package provides
Mingw MS VC RT-linked binaries, NOT Cygwin binaries, for use with the mingw64-x86_64-gcc cross compiler, installed in
'/usr/x86_64-w64-mingw32/sys-root/mingw/{bin,lib,include}/.'
mingw64-x86_64-c-ares mingw64-x86_64-libevent mingw64-x86_64-win-iconv mingw64-x86_64-libxml2 mingw64-x86_64-openssl
mingw64-x86_64-zlib libev-devel mingw64-x86_64-binutils mingw64-x86_64-CUnit mingw64-x86_64-gcc-core
mingw64-x86_64-gcc-g++ autoconf automake libtool pkg-config python3-sphinx HTTP/2 and its header compression algorithm
HPACK implementation. The framing layer of HTTP/2 is implemented as a reusable library. Also included are an HTTP/2
client, server, proxy, load test and benchmarking tool, and Python modules. Package provides Mingw MS VC RT-linked
binaries, NOT Cygwin binaries, for use with the mingw64-x86_64-gcc cross compiler, installed in
/usr/x86_64-w64-mingw32/sys-root/mingw/{bin,lib,include}/.
but eval dislikes the "declare --"!
--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.
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