[MacPorts] #60109: lazarus @2.0.6: ./../ppaslink.sh: line 9: /opt/local/bin/ld: Argument list too long

[MacPorts]

#60109: lazarus @2.0.6: ./../ppaslink.sh: line 9: /opt/local/bin/ld: Argument list
too long
--------------------+--------------------------------------
 Reporter:  kencu   |      Owner:  karl-michael.schindler@…
     Type:  defect  |     Status:  assigned
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  lazarus
--------------------+--------------------------------------
 Reported upstream
 <https://forum.lazarus.freepascal.org/index.php/topic,48572.0.html> as
 well.

 Linking large fpc projects, such as when building and installing Lazarus,
 is generating link errors on several different versions of macOS (10.7,
 10.13 noted so far) with several different versions of the linker (ld64),
 due to "Argument list too long."

 For example, this build of lazarus on 10.7.5 using ld64-450:
 {{{
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_lazarus/lazarus/work/lazarus/ide/main.pp(239,39)
 Hint: (5024) Parameter "Sender" not used
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_lazarus/lazarus/work/lazarus/ide/main.pp(240,40)
 Hint: (5024) Parameter "Sender" not used
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_lazarus/lazarus/work/lazarus/ide/main.pp(423,35)
 Hint: (5024) Parameter "Sender" not used
 (9001) Assembling (pipe) ../units/x86_64-darwin/cocoa/main.s
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_lazarus/lazarus/work/lazarus/ide/lazarus.pp(75,5)
 Hint: (5023) Unit "FPCUnitTestRunner" not used in Lazarus
 (9001) Assembling (pipe) ../units/x86_64-darwin/cocoa/lazarus.s
 (9022) Compiling resource ../units/x86_64-darwin/cocoa/lazarus.or
 (9015) Linking ../lazarus
 ./../ppaslink.sh: line 9: /opt/local/bin/ld: Argument list too long
 An error occurred while linking
 lazarus.pp(167) Error: (9013) Error while linking
 lazarus.pp(167) Fatal: (10026) There were 1 errors compiling module,
 stopping
 Fatal: (1018) Compilation aborted
 make[2]: *** [lazarus] Error 1
 }}}
 It can be overcome by by choosing a build directory with a shorter
 pathname, on the same system, with the same toolchain.
 {{{
 /opt/local/var/macports/build/_opt_macports-
 ports_devel_lazarus/lazarus/work/lazarus/ide/main.pp(239,39) Hint: (5024)
 Parameter "Sender" not used
 /opt/local/var/macports/build/_opt_macports-
 ports_devel_lazarus/lazarus/work/lazarus/ide/main.pp(240,40) Hint: (5024)
 Parameter "Sender" not used
 /opt/local/var/macports/build/_opt_macports-
 ports_devel_lazarus/lazarus/work/lazarus/ide/main.pp(423,35) Hint: (5024)
 Parameter "Sender" not used
 (9001) Assembling (pipe) ../units/x86_64-darwin/cocoa/main.s
 /opt/local/var/macports/build/_opt_macports-
 ports_devel_lazarus/lazarus/work/lazarus/ide/lazarus.pp(75,5) Hint: (5023)
 Unit "FPCUnitTestRunner" not used in Lazarus
 (9001) Assembling (pipe) ../units/x86_64-darwin/cocoa/lazarus.s
 (9022) Compiling resource ../units/x86_64-darwin/cocoa/lazarus.or
 (9015) Linking ../lazarus
 (1008) 293660 lines compiled, 205.4 sec
 (1021) 30 warning(s) issued
 (1022) 3082 hint(s) issued
 (1023) 1 note(s) issued
 make[2]: Leaving directory `/opt/local/var/macports/build/_opt_macports-
 ports_devel_lazarus/lazarus/work/lazarus/ide'
 }}}

 The file link.res that generates the error is indeed quite large, with
 most of the objects having full pathnames. It is `cat` ed onto the link
 line by the ppaslink.sh script.  I think it is simply exceeding the
 ARG_MAX of the system.
 {{{
 $ ls -la ../link.res
 -rw-r--r--  1 macports  admin  243910 18 Feb 19:22 ../link.res
 }}}

 Many larger projects (Mozilla, etc) have come up against this same issue
 over the years. The solution seems to be to pass the objects as a filelist
 to the linker using -filelist .

 Unfortunately it appears that the existing link.res file cannot simply be
 used to do that, as it contains other linker commands such as -arch and
 other library references that my reading says Apple's ld64 does not allow
 in the filelist files.

 I'm not sure if the link.res file can use shorter relative pathnames for
 at least some objects, or if we can configure it to do so somehow. Or how,
 exactly, the logic that makes link.res could be altered in some fashion to
 have it separate the linker commands and the object references into
 separate files, and then use the linker's -filelist feature.

 MacPorts could be altered in some fashion to use a shorter path to it's
 build directory, and this would probably help a bit, but that is not so
 simple to accomplish, and sooner or later fpc / lazarus would run up
 against this ARG_MAX issue again it seems.

-- 
Ticket URL: <https://trac.macports.org/ticket/60109>
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