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Andres Freund 089480c077 Default to hidden visibility for extension libraries where possible ... Until now postgres built extension libraries with global visibility, i.e. exporting all symbols. On the one platform where that behavior is not natively available, namely windows, we emulate it by analyzing the input files to the shared library and exporting all the symbols therein. Not exporting all symbols is actually desirable, as it can improve loading speed, reduces the likelihood of symbol conflicts and can improve intra extension library function call performance. It also makes the non-windows builds more similar to windows builds. Additionally, with meson implementing the export-all-symbols behavior for windows, turns out to be more verbose than desirable. This patch adds support for hiding symbols by default and, to counteract that, explicit symbol visibility annotation for compilers that support __attribute__((visibility("default"))) and -fvisibility=hidden. That is expected to be most, if not all, compilers except msvc (for which we already support explicit symbol export annotations). Now that extension library symbols are explicitly exported, we don't need to export all symbols on windows anymore, hence remove that behavior from src/tools/msvc. The supporting code can't be removed, as we still need to export all symbols from the main postgres binary. Author: Andres Freund <andres@anarazel.de> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/20211101020311.av6hphdl6xbjbuif@alap3.anarazel.de		4 years ago
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Makefile	…
Makefile.aix	Refactor DLSUFFIX handling	4 years ago
Makefile.cygwin	Refactor DLSUFFIX handling	4 years ago
Makefile.darwin	Unify DLSUFFIX on Darwin	4 years ago
Makefile.freebsd	Refactor DLSUFFIX handling	4 years ago
Makefile.linux	Refactor DLSUFFIX handling	4 years ago
Makefile.netbsd	Refactor DLSUFFIX handling	4 years ago
Makefile.openbsd	Refactor DLSUFFIX handling	4 years ago
Makefile.solaris	Refactor DLSUFFIX handling	4 years ago
Makefile.win32	Refactor DLSUFFIX handling	4 years ago
pgxs.mk	Default to hidden visibility for extension libraries where possible	4 years ago