diff --git a/libretro-build-common.sh b/libretro-build-common.sh
index 79c71b23..488b289c 100755
--- a/libretro-build-common.sh
+++ b/libretro-build-common.sh
@@ -59,6 +59,15 @@ build_libretro_pcsx_rearmed_interpreter() {
       fi
       "${MAKE}" -f Makefile.libretro USE_DYNAREC=0 platform="${FORMAT_COMPILER_TARGET}" ${COMPILER} "-j${JOBS}" || die 'Failed to build PCSX ReARMed'
       cp "pcsx_rearmed_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}/pcsx_rearmed_interpreter${FORMAT}.${FORMAT_EXT}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "pcsx_rearmed_interpreter" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "pcsx_rearmed_interpreter" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo 'PCSX ReARMed not fetched, skipping ...'
    fi
@@ -81,6 +90,15 @@ build_libretro_generic_makefile_subcore() {
       fi
       make -f ${4} platform=${5} -j$JOBS || die "Failed to build ${2}"
       cp ${2}_libretro$FORMAT.${FORMAT_EXT} $RARCH_DIST_DIR/${2}_libretro$FORMAT.${FORMAT_EXT}
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "${2}" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "${2}" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    fi
 }
 
@@ -100,8 +118,26 @@ build_libretro_fba_cps1() {
 copy_core_to_dist() {
    if [ "$FORMAT_COMPILER_TARGET" = "theos_ios" ]; then
       cp "objs/obj/${1}_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "${1}" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "${1}" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       cp "${1}_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "${1}" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "${1}" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    fi
 }
 
@@ -403,6 +439,15 @@ build_libretro_mess() {
 	"${MAKE}" -f Makefile.libretro "TARGET=mess" platform="${FORMAT_COMPILER_TARGET}" ${COMPILER} "-j${JOBS}" || die 'Failed to build MAME'
       fi
       cp "mess_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "mess" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "mess" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo 'MAME not fetched, skipping ...'
    fi
@@ -429,6 +474,15 @@ rebuild_libretro_mess() {
 	"${MAKE}" -f Makefile.libretro "TARGET=mess" platform="${FORMAT_COMPILER_TARGET}" ${COMPILER} "-j${JOBS}" || die 'Failed to build MAME'
       fi
       cp "mess_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "mess" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "mess" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo 'MAME not fetched, skipping ...'
    fi
@@ -455,6 +509,15 @@ build_libretro_ume() {
         "${MAKE}" -f Makefile.libretro "TARGET=ume" platform="${FORMAT_COMPILER_TARGET}" ${COMPILER} "-j${JOBS}" || die 'Failed to build MAME'
       fi
       cp "ume_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "ume" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "ume" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo 'MAME not fetched, skipping ...'
    fi
@@ -481,6 +544,15 @@ rebuild_libretro_ume() {
 	"${MAKE}" -f Makefile.libretro "TARGET=ume" platform="${FORMAT_COMPILER_TARGET}" ${COMPILER} "-j${JOBS}" || die 'Failed to build MAME'
       fi
       cp "ume_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "ume" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "ume" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo 'MAME not fetched, skipping ...'
    fi
@@ -502,6 +574,15 @@ build_libretro_bsnes_modern() {
       fi
       "${MAKE}" -f Makefile platform="${FORMAT_COMPILER_TARGET}" compiler="${4}" ui='target-libretro' profile="${3}" "-j${JOBS}" || die "Failed to build ${1} ${3} core"
       cp -f "out/${1}_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}/${1}_${3}_libretro${FORMAT}.${FORMAT_EXT}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "${1}_${3}" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "${1}_${3}" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo "${1} ${3} not fetched, skipping ..."
    fi
@@ -531,6 +612,15 @@ build_libretro_bsnes_cplusplus98() {
       fi
       "${MAKE}" platform="${FORMAT_COMPILER_TARGET}" ${COMPILER} "-j${JOBS}"
       cp "out/libretro.${FORMAT_EXT}" "${RARCH_DIST_DIR}/${CORENAME}_libretro${FORMAT}.${FORMAT_EXT}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "${CORENAME}" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "${CORENAME}" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo "${CORENAME} not fetched, skipping ..."
    fi
@@ -548,6 +638,15 @@ build_libretro_bnes() {
       fi
       "${MAKE}" -f Makefile ${COMPILER} "-j${JOBS}" compiler="${CXX11}" || die 'Failed to build bNES'
       cp "libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}/bnes_libretro${FORMAT}.${FORMAT_EXT}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "bnes" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "bnes" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo 'bNES not fetched, skipping ...'
    fi
@@ -586,6 +685,15 @@ build_libretro_mupen64() {
 	 "${MAKE}" platform="${FORMAT_COMPILER_TARGET_ALT}" ${COMPILER} "-j${JOBS}" || die 'Failed to build Mupen 64'
       fi
       cp "mupen64plus_libretro${FORMAT}.${FORMAT_EXT}" "${RARCH_DIST_DIR}"
+      if [ "$?" -eq "0" ]; then
+        if [ -n $CORE_BUILD_SUCCESS_LOG ]; then
+          echo "mupen64plus" >> $CORE_BUILD_SUCCESS_LOG
+        fi
+      else
+        if [ -n $CORE_BUILD_FAIL_LOG ]; then
+          echo "mupen64plus" >> $CORE_BUILD_FAIL_LOG
+        fi
+      fi
    else
       echo 'Mupen64 Plus not fetched, skipping ...'
    fi
diff --git a/libretro-build.sh b/libretro-build.sh
index edb9d339..a7003080 100755
--- a/libretro-build.sh
+++ b/libretro-build.sh
@@ -91,6 +91,13 @@ echo "STRIP = $STRIP"
 
 mkdir -p "$RARCH_DIST_DIR"
 
+if [ -n "$CORE_BUILD_SUCCESS_LOG" ]; then
+	rm -f $CORE_BUILD_SUCCESS_LOG
+fi
+if [ -n "$CORE_BUILD_FAIL_LOG" ]; then
+	rm -f $CORE_BUILD_FAIL_LOG
+fi
+
 if [ $1 ]; then
    $1
 else
@@ -153,3 +160,12 @@ else
    build_libretro_gpsp
    build_libretro_emux
 fi
+
+if [[ -n "$CORE_BUILD_SUCCESS_LOG" && -r "$CORE_BUILD_SUCCESS_LOG" ]]; then
+	echo "$(wc -l < $CORE_BUILD_SUCCESS_LOG) core(s) successfully built:"
+	$CORE_BUILD_SHOW_CMD $CORE_BUILD_SUCCESS_LOG
+fi
+if [[ -n "$CORE_BUILD_FAIL_LOG" && -r "$CORE_BUILD_FAIL_LOG" ]]; then
+	echo "$(wc -l < $CORE_BUILD_FAIL_LOG) core(s) failed to build:"
+	$CORE_BUILD_SHOW_CMD $CORE_BUILD_FAIL_LOG
+fi
diff --git a/libretro-config.sh b/libretro-config.sh
index 37cfcd47..61feb31e 100755
--- a/libretro-config.sh
+++ b/libretro-config.sh
@@ -22,10 +22,12 @@ if [[ -n "$PROCESSOR_ARCHITEW6432" && $PROCESSOR_ARCHITEW6432 -eq "AMD64" ]]; th
    X86=true && X86_64=true
 fi
 
-if command -v nproc >/dev/null; then
-   JOBS=$(nproc)
-else
-   JOBS=1
+if [ -z "$JOBS" ]; then
+  if command -v nproc >/dev/null; then
+     JOBS=$(nproc)
+  else
+     JOBS=1
+  fi
 fi
 
 # Platform Assignment
@@ -137,6 +139,15 @@ export RA_ANDROID_API=android-18
 # Retroarch minimum API level (defines low end android version compatability)
 export RA_ANDROID_MIN_API=android-9
 
+# Core build files
+export CORE_BUILD_SUCCESS_LOG=$(pwd)/build-success.log
+export CORE_BUILD_FAIL_LOG=$(pwd)/build-fail.log
+if command -v column >/dev/null; then
+  CORE_BUILD_SHOW_CMD=column
+else
+  CORE_BUILD_SHOW_CMD=cat
+fi
+
 #USER DEFINES
 #------------
 #These options should be defined inside your own