Hi all, While bumping on a problem with an extension that relied on pg_config --libs, I've been recalled about the fact that pg_config produces no output for --libs/--ldflags_ex when building with meson, src/include/meson.build including the following on HEAD since meson has been introduced in e6927270cd18: var_ldflags_ex = '' # FIXME # FIXME - some extensions might directly use symbols from one of libs. If # that symbol isn't used by postgres, and statically linked, it'll cause an # undefined symbol at runtime. And obviously it'll cause problems for # executables, although those are probably less common. var_libs = ''
A equivalent of pgxs.mk is generated when building with meson, and it uses LIBS. Anyway, looking at https://mesonbuild.com/Dependencies.html and our meson.build, we rely heavily on declare_dependency() to add a library to the internal list used in the build after some find_library() lookups, but there is no easy way to extract that later on. Maintaining a list in a variable built in the main meson.build may be OK knowing that new dependencies are not added that often, but I cannot stop thinking that there is some magic I am missing from meson to get an access to this information once all the options are processed. Thoughts or comments? -- Michael
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