Unsolved Build Postgresql driver for Webassembly
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Hello all and thanks for your suppot,
I was working on a QT application and intended to try to build it for webassembly.
I followed the instructions here "https://doc.qt.io/qt-5/wasm.html" and was able to build qt using emscripten.
Since my application uses Postgresql, I have to build the drivers for webassembly as well, this is where things got confusing, I tried to follow the instructions here "https://doc.qt.io/qt-5/sql-driver.html":
"cd $QTDIR/qtbase/src/plugins/sqldrivers
qmake -- PSQL_INCDIR=/usr/include/pgsql
make sub-psql"where "qmake" is the one resulting from the emscripten build
but running "make sub-psql" results in a message:
"Project ERROR: No module claims plugin type 'sqldrivers'
Makefile:44: recipe for target 'sub-psql' failed"Appreciate your help.
Best Regards,
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Hi,
I haven't used that module yet but the first thing I would check is whether PostgreSQL has libraries for WASM.
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Hello SGaist,
Thanks for your response.
Let me make sure I understand, the commends :
qmake -- PSQL_INCDIR=/usr/include/pgsql
make sub-psql"builds the SQL library of Qt, but it requires the driver APIs to be compatible, but what I did is that I provided PostgreSQL include path that is a desktop build not emscripten, so the qmake script recognized that and failed ?
If that's the case, would building PostgreSQL using emscripten be an alternative ? I looked online for a ready build but couldn't find something that seemed mature.
Appreciate your help.
BR.
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Let me ask another question, is there a different SQL database solution that would allow me to port my application to WASM with minimal overhead ?
Thanks.
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@YasserFathy
So far as I understood, QtSql is not supported (yet?) in WASM, that would include even SQLite. @lorn-potter would be your expert, if he happens to see this. -
Thanks Jon, hope he sees it.
