[Proj] What is src/proj.def for?

[Dan Crosby]

Hi All,
 
Yes a module definition file (.def) is one way to define the functions exported from a DLL.
 
https://docs.microsoft.com/en-us/cpp/build/exporting-from-a-dll-using-def-files
 
Dan
 
From: proj-bounces at lists.maptools.org [mailto:proj-bounces at lists.maptools.org] On Behalf Of Kurt Schwehr
Sent: Thursday, November 09, 2017 5:44 AM
To: proj <proj at lists.maptools.org>
Subject: [Proj] What is src/proj.def for?
 
Hi all,
 
Maybe a dumb question, but what is src/proj.def for? Is this a MSVC only thing?  It looks like something that controls share lib entry points.  I'm not a Windows dev, so maybe that's why I don't know what it is.
 
Am I missing some location where it's documented?  The closest I got was:
 
https://github.com/OSGeo/proj.4/issues/214
https://github.com/OSGeo/proj.4/pull/355
 
I've been patching my bazel based build that has this file, but it doesn't seem to be used by anything.
 
-kurt
 
 
find . -type f | grep -v git | xargs egrep 'proj[.]def'
 
./ChangeLog:  * src/proj.def: add pj_get_spheroid_defn to proj.def. (#214)
./ChangeLog:  * proj.def: added lots of methods, including some private ones used
./ChangeLog:  * src/pj_pr_list.c, proj.def, proj_api.h: Added the pj_get_def()
./ChangeLog:  * src/proj.def: added pj_strerrno and pj_errno as per request from
./ChangeLog:  * Added proj.def to extra_dist in src/Makefile.am.
./src/lib_proj.cmake:    set(ALL_LIBPROJ_SOURCES ${ALL_LIBPROJ_SOURCES} proj.def )
./src/Makefile.am:EXTRA_DIST = makefile.vc proj.def bin_cct.cmake bin_gie.cmake bin_cs2cs.cmake \
./src/makefile.vc:         link /debug /dll /def:proj.def /out:$(PROJ_DLL) /implib:proj_i.lib \
./wince/msvc80/projce_dll/projce_dll.vcproj:      <Tool Name="VCLinkerTool" AdditionalOptions=" /subsystem:windowsce,4.20 /machine:ARM /ARMPADCODE" AdditionalDependencies="ccrtrtti.lib" OutputFile="$(OutDir)/proj.dll" LinkIncremental="2" AdditionalLibraryDirectories="" ModuleDefinitionFile="..\..\..\src\proj.def" DelayLoadDLLs="$(NOINHERIT)" GenerateDebugInformation="true" ProgramDatabaseFile="$(OutDir)/proj_dll.pdb" SubSystem="0" ImportLibrary="$(OutDir)/proj_i.lib"/>
./wince/msvc80/projce_dll/projce_dll.vcproj:      <Tool Name="VCLinkerTool" AdditionalOptions=" /subsystem:windowsce,4.20 /machine:ARM /ARMPADCODE" OutputFile="$(OutDir)/proj.dll" LinkIncremental="1" ModuleDefinitionFile="..\..\..\src\proj.def" DelayLoadDLLs="$(NOINHERIT)" GenerateDebugInformation="true" ProgramDatabaseFile="$(OutDir)/projce_dll.pdb" SubSystem="0" OptimizeReferences="2" EnableCOMDATFolding="2" ImportLibrary="$(OutDir)/proj_i.lib"/>
./wince/msvc80/projce_dll/projce_dll.vcproj:        <File RelativePath="..\..\..\src\proj.def">
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