diff --git a/Make.inc b/Make.inc
index da83dd3ea567f..81343ef9a1702 100644
--- a/Make.inc
+++ b/Make.inc
@@ -652,8 +652,8 @@ ifeq ($(OS),FreeBSD)
 ifneq (,$(findstring gfortran,$(FC)))
 
 # First let's figure out what version of GCC we're dealing with
-_GCCMAJOR := $(shell $(FC) -dumpversion | cut -d'.' -f1)
-_GCCMINOR := $(shell $(FC) -dumpversion | cut -d'.' -f2)
+_GCCMAJOR := $(shell $(FC) -dumpversion 2>/dev/null | cut -d'.' -f1)
+_GCCMINOR := $(shell $(FC) -dumpversion 2>/dev/null | cut -d'.' -f2)
 
 # The ports system uses major and minor for GCC < 5 (e.g. gcc49 for GCC 4.9), otherwise major only
 ifeq ($(_GCCMAJOR),4)
diff --git a/deps/csl.mk b/deps/csl.mk
index 9f95c00f3cfe7..1940984fdc199 100644
--- a/deps/csl.mk
+++ b/deps/csl.mk
@@ -1,6 +1,6 @@
 # Interrogate the fortran compiler (which is always GCC based) on where it is keeping its libraries
-STD_LIB_PATH := $(shell LANG=C $(FC) -print-search-dirs | grep '^programs: =' | sed -e "s/^programs: =//")
-STD_LIB_PATH += :$(shell LANG=C $(FC) -print-search-dirs | grep '^libraries: =' | sed -e "s/^libraries: =//")
+STD_LIB_PATH := $(shell LANG=C $(FC) -print-search-dirs 2>/dev/null | grep '^programs: =' | sed -e "s/^programs: =//")
+STD_LIB_PATH += :$(shell LANG=C $(FC) -print-search-dirs 2>/dev/null | grep '^libraries: =' | sed -e "s/^libraries: =//")
 ifneq (,$(findstring CYGWIN,$(BUILD_OS))) # the cygwin-mingw32 compiler lies about it search directory paths
 STD_LIB_PATH := $(shell echo '$(STD_LIB_PATH)' | sed -e "s!/lib/!/bin/!g")
 endif