How to patch FPC Library ?
lazarus / 1-Linux

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valerife · 2016-09-15 15:49

Hello everyone,

I'm new to FPC and I want to patch a few things in the library fcl-
web/fphttpclient.pp

However all of my modifications aren't taken in consideration when the
project is built.

My first instinct was to guess it was a .ppu issue. The sources i am
modifying are not the one getting build. I went to the /etc/fpc.cfg
conf and update some path.
I replace this Quote-Fu/usr/lib/fpc/$fpcversion/units/$fpctarget
-Fu/usr/lib/fpc/$fpcversion/units/$fpctarget/*
-Fu/usr/lib/fpc/$fpcversion/units/$fpctarget/rtl
 by this Quote-Fu/usr/share/fpcsrc/$fpcversion/
-Fu/usr/share/fpcsrc/$fpcversion/*
-Fu/usr/share/fpcsrc/$fpcversion/rtl
-Fu/usr/share/fpcsrc/$fpcversion/packages/fcl-
web/src/base/fphttpclient.pp
(I am updating my files in /usr/share/fpcsrc/...)
The compiler can't build anymore and tell me it doesn't find the
fphttpclient.pp (Even if i put the path in my fpc.cfg).
Error message : QuoteFree Pascal Compiler version 3.0.0 [2015/12/05]
for x86_64
Copyright (c) 1993-2015 by Florian Klaempfl and others
Target OS: Linux for x86-64
Compiling testupdatehttp.lpr
testupdatehttp.lpr(9,22) Fatal: Can't find unit fphttpclient used by
testupdatehttp
Fatal: Compilation aborted
Error: /usr/bin/ppcx64 returned an error exitcode

i ran a strace and the interesting thing is it looks like it s opening
the folder:
Quote[pid   477] open("/usr/share/fpcsrc/3.0.0/packages/fcl-
web/src/base/", O_RDONLY|O_LARGEFILE) = 4                            
                              
[pid   477] close(4)

In am on a Linux neon, installed all of fpc fpcsrc and lazarus with
the .deb

Any pointer for where to look at would be much appreciated,
Thanks

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Leledumbo · 2016-09-15 16:05

Quote from: valerife on September 15, 2016, 05:49:42 pmI replace this
Quote-Fu/usr/lib/fpc/$fpcversion/units/$fpctarget
-Fu/usr/lib/fpc/$fpcversion/units/$fpctarget/*
-Fu/usr/lib/fpc/$fpcversion/units/$fpctarget/rtl
 by this Quote-Fu/usr/share/fpcsrc/$fpcversion/
-Fu/usr/share/fpcsrc/$fpcversion/*
-Fu/usr/share/fpcsrc/$fpcversion/rtl
-Fu/usr/share/fpcsrc/$fpcversion/packages/fcl-
web/src/base/fphttpclient.pp
You might want to read the documentation what -Fu means. Certainly
it's NOT an option to point specific unit path. And even worse, you
should NEVER point it to source code, only compiled units.

If you need to update certain fpc shipped source code, after
modification execute make in the corresponding directory. In your
case, it's fcl-web (might fail when you haven't built its dependencies
as well). Or if that's too difficult, execute it in top level source
directory which is /usr/share/fpcsrc. Note that you'll need to be root
or chmod the whole fpcsrc as the script will build everything under
that directory. If make goes fine, you'll need to install the compiled
units, each is build inside their own package directory. You can
simply cp them to /usr/lib/fpc/$fpcversion/units/$fpctarget/fcl-web
(or use make install INSTALL_PREFIX=/usr). Note that executing make
install at the top level directory will reinstall everything, which
might or might not be desirable.

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MikeOnline · 2021-03-06 08:22

The steps in the previous post helped me patch FPC 3.2.0, specifically
patching packages/fcl-web/src/openssl.pas, on macOS, with a code
change posted at https://forum.lazarus.freepascal.org/index.php/topic,
50350.msg374104.html#msg374104.  I was unsuccessful building and
copying individual packages, but doing the whole thing worked fine.

The following commands worked reliably from Terminal:

Code: Bash  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i sudo su -cd
/usr/local/share/fpcsrc/packages/fcl-web/srcnano openssl.pas   # see
link, above, for the fpc 3.2.0 patch needed to support https with
fphttpclient and opensslsockets on newer macOS versionscd
/usr/local/share/fpcsrcmake allmake install    # no prefix requiredcd
/Applications/Lazarusmake clean allcd /usr/local/binunlink lazbuildln
-s /Applications/Lazarus/lazbuildexit