TalGloz <glozmantal@xxxxxxxxx> writes: > I dont understand why the output for Postgres 12 > g++ -Wall -Wpointer-arith -Wendif-labels -Wmissing-format-attribute > -Wformat-security -fno-strict-aliasing -fwrapv -O2 -o seal_diff_cpp.o -c > seal_diff_cpp.cpp > seal_diff_cpp.cpp:2:10: fatal error: postgres.h: No such file or directory > 2 | #include "postgres.h" > | ^~~~~~~~~~~~ > looks different form the ones of Postgres 10 Looking at your Makefile, it seems to be expecting that CXXFLAGS will be honored in the build, and it isn't being. As far as I can see from pgxs.mk, you're supposed to spell that PG_CXXFLAGS. Probably, it accidentally worked to do it the other way in v10, but no longer does, likely as a result of the fact that there's now some minimal amount of C++ code in core PG. I'm a little dubious about whether overriding CXX is a good idea now, too. (Likely the core setting is the same, but if it were pointing at a different compiler that could cause trouble.) regards, tom lane
