Merge branch 'rf/ldflags' into 'master'

RF: Also need to drop -L flags that are set in environment, in addition to -rpath flags

See merge request !37

CHANGELOG.md

 # FSL base project changelog
 
+## 2111.9 (Wednesday 8th December 2021)
+
+* If the `${LDFLAGS}` environment variable is set in the environment, any
+  `-L` options are dropped from it, so that the `$FSLDEVDIR` can explicitly
+  be set to take precedence over `$FSLDIR`.
+
+
 ## 2111.8 (Friday 26th November 2021)
 
 * Work around an issue with compiling against older versions of `libxml++`,

config/buildSettings.mk

@@ -98,6 +98,13 @@ COMMA    := ,
 _LDFLAGS := $(patsubst -Wl${COMMA}-rpath%,,${LDFLAGS})
 LDFLAGS   = ${_LDFLAGS}
 
+# Also drop -L options from LDFLAGS if set in the
+# environment, as we want to set our own
+# precedence rules as above ($FSLDEVDIR > $FSLDIR)
+# - this is done in vars.mk
+_LDFLAGS := $(patsubst -L%,,${_LDFLAGS})
+LDFLAGS   = ${_LDFLAGS}
+
 ifeq ($(SYSTYPE), Darwin)
 
   # CC, CXX, CFLAGS, CXXFLAGS, and LDFLAGS