Hi all, I was trying to cross-compile PostgreSQL 16.1 using Buildroot which worked fine until I executed "initdb" on my target device, where I faced the following error:
2023-12-06 07:10:18.568 UTC [31] FATAL: could not load library "/usr/lib/postgresql/dict_snowball.so": /usr/lib/postgresql/dict_snowball.so: undefined symbol: CurrentMemoryContext
It turned out that the "postgres" binary was missing the symbol "CurrentMemoryContext" because the configure script assumed that my toolchain's (GCC 9.4) linker does not support "--export-dynamic", although it supports it. I had a quick look at the configure script where the following lines peeked my interest: if test "$cross_compiling" = yes; then : pgac_cv_prog_cc_LDFLAGS_EX_BE__Wl___export_dynamic="assuming no" Apparently when cross-compiling the linker is automatically assumed to not understand "--export-dynamic", leading to aforementioned problem on my end. A workaround of mine is to override pgac_cv_prog_cc_LDFLAGS_EX_BE__Wl___export_dynamic with "yes", which makes everything work as expected. There is also at least one additional linker flag "--as-needed" that is not being used when cross-compiling. Is this a bug or am I misunderstanding the implications that PostgreSQL has when "$cross_compiling=yes"? Best regards, Dominik
