makefile: use proper linker flags for C++ compiles

bmomjian · bmomjian · commit f1e8362aefc8 · 2020-03-31T22:26:11.000-04:00
Add CFLAGS_SL flags for C++ compiles, which adds needed -fPIC linker flag. Reported-by: Oleksii Kliukin Discussion: https://postgr.es/m/E4A49A6B-621B-4830-A374-970EBB7D1328@hintbits.com Backpatch-through: 10 only
diff --git a/src/Makefile.shlib b/src/Makefile.shlib
@@ -101,6 +101,7 @@ endif
 # Try to keep the sections in some kind of order, folks...
 
 override CFLAGS += $(CFLAGS_SL)
+override CXXFLAGS += $(CFLAGS_SL)
 ifdef SO_MAJOR_VERSION
 # libraries ought to use this to refer to versioned gettext domain names
 override CPPFLAGS += -DSO_MAJOR_VERSION=$(SO_MAJOR_VERSION)
