don't set ldflags

configure

@@ -20,7 +20,7 @@ EXTRACXXFLAGS=$(echo "$RCXX"| sed -e  "s/-std=[^ ]\{0,\}//")
 CFLAGS=`"${R_HOME}/bin/R" CMD config CFLAGS`
 CPPFLAGS=`"${R_HOME}/bin/R" CMD config --cppflags`
 CXXFLAGS=`"${R_HOME}/bin/R" CMD config CXXFLAGS`
-LDFLAGS=`"${R_HOME}/bin/R" CMD config --ldflags`
+R_LDFLAGS=`"${R_HOME}/bin/R" CMD config --ldflags`
 FC=`"${R_HOME}/bin/R" CMD config FC`
 FLIBS=`"${R_HOME}/bin/R" CMD config FLIBS`
 
@@ -36,5 +36,6 @@ $CMAKE ../tools \
   -DCMAKE_C_COMPILER="$CC" \
   -DCMAKE_CXX_COMPILER="$CXX" \
   -DR_HOME="$R_HOME"
+  -DR_LDFLAGS=$R_LDFLAGS
 
 echo "" >> _deps/highfive-src/include/highfive/bits/H5Friends.hpp

tools/CMakeLists.txt

@@ -32,6 +32,8 @@ find_package(R REQUIRED)
 add_library(RcppPlanc SHARED "${PROJECT_SOURCE_DIR}/../src/rcppplanc_nmf.cpp" "${PROJECT_SOURCE_DIR}/../src/RcppExports.cpp" "${PROJECT_SOURCE_DIR}/../src/conversion.cpp" "${PROJECT_SOURCE_DIR}/../src/common/detect_blas.c" $<$<BOOL:${WIN32}>:${PROJECT_SOURCE_DIR}/../src/RcppPlanc-win.def>)
 if(WIN32)
 target_link_options(RcppPlanc PRIVATE -static-libgcc $<$<CONFIG:RELEASE>:-s> $<$<CONFIG:RELWITHDEBINFO>:-s>)
+else()
+    target_link_directories(RcppPlanc PRIVATE ${R_LDFLAGS})
 endif()
 set_target_properties(RcppPlanc PROPERTIES PREFIX "")
 if(APPLE)