From dda86edd18ae559e1817499c3f5810374e5c6980 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Fri, 21 Dec 2018 17:11:23 +0200
Subject: [PATCH 1/5] Fix warning about "Unknown upload protocol custom"

---
 builder/main.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/builder/main.py b/builder/main.py
index b46dba3..1b5a026 100644
--- a/builder/main.py
+++ b/builder/main.py
@@ -226,7 +226,7 @@ def _jlink_cmd_script(env, source):
     upload_actions = [env.VerboseAction("$UPLOADCMD", "Uploading $SOURCE")]
 
 # custom upload tool
-elif "UPLOADCMD" in env:
+elif upload_protocol == "custom":
     upload_actions = [env.VerboseAction("$UPLOADCMD", "Uploading $SOURCE")]
 
 else:

From 5a9cbef05ba4f5d78df2e1826e84ce51f91bddac Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Thu, 27 Dec 2018 02:48:52 +0200
Subject: [PATCH 2/5] Text examples with Python 3

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 968775e..16bf220 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,7 @@
 language: python
 python:
   - "2.7"
+  - "3.5"
 
 env:
   - PLATFORMIO_PROJECT_DIR=examples/arduino-blink

From 81c0ebf24ee63f748acd0a8431c844cd280b85c3 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Tue, 29 Jan 2019 22:30:18 +0200
Subject: [PATCH 3/5] Use Python 3.6 for Travis.CI

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 16bf220..d1d421b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: python
 python:
   - "2.7"
-  - "3.5"
+  - "3.6"
 
 env:
   - PLATFORMIO_PROJECT_DIR=examples/arduino-blink

From 48c8dc7a748a8947bb02db22f6c4efdd5ebfa3b0 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Thu, 31 Jan 2019 16:42:05 +0200
Subject: [PATCH 4/5] Allow to control firmware optimization // Resolve #43

---
 builder/frameworks/arduino.py | 65 +++++++++++++++++++++++++++++++++--
 1 file changed, 63 insertions(+), 2 deletions(-)

diff --git a/builder/frameworks/arduino.py b/builder/frameworks/arduino.py
index 7938f9b..e65a4b3 100644
--- a/builder/frameworks/arduino.py
+++ b/builder/frameworks/arduino.py
@@ -116,7 +116,6 @@
         ASFLAGS=["-x", "assembler-with-cpp"],
 
         CCFLAGS=[
-            "-Os",  # optimize for size
             "-Wall",  # show warnings
             "-ffunction-sections",  # place each function in its own section
             "-fdata-sections",
@@ -142,7 +141,6 @@
         RANLIBFLAGS=["-s"],
 
         LINKFLAGS=[
-            "-Os",
             "-Wl,--gc-sections,--relax",
             "-mthumb",
             "-mcpu=%s" % env.BoardConfig().get("build.cpu"),
@@ -166,6 +164,69 @@
             ]
         )
 
+    # Optimization
+    if "TEENSY_OPT_FASTER_LTO" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-O2", "-flto", "-fno-fat-lto-objects"],
+            LINKFLAGS=["-O2", "-flto", "-fno-fat-lto-objects", "-fuse-linker-plugin"]
+        )
+    elif "TEENSY_OPT_FAST" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-O1"],
+            LINKFLAGS=["-O1"]
+        )
+    elif "TEENSY_OPT_FAST_LTO" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-O1", "-flto", "-fno-fat-lto-objects"],
+            LINKFLAGS=["-O1", "-flto", "-fno-fat-lto-objects", "-fuse-linker-plugin"]
+        )
+    elif "TEENSY_OPT_FASTEST" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-O3"],
+            LINKFLAGS=["-O3"]
+        )
+    elif "TEENSY_OPT_FASTEST_LTO" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-O3", "-flto", "-fno-fat-lto-objects"],
+            LINKFLAGS=["-O3", "-flto", "-fno-fat-lto-objects", "-fuse-linker-plugin"]
+        )
+    elif "TEENSY_OPT_FASTEST_PURE_CODE" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-O3", "-mpure-code"],
+            CPPDEFINES=["__PURE_CODE__"],
+            LINKFLAGS=["-O3", "-mpure-code"]
+        )
+    elif "TEENSY_OPT_FASTEST_PURE_CODE_LTO" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-O3", "-mpure-code", "-flto", "-fno-fat-lto-objects"],
+            CPPDEFINES=["__PURE_CODE__"],
+            LINKFLAGS=["-O3", "-mpure-code", "-flto", "-fno-fat-lto-objects", "-fuse-linker-plugin"]
+        )
+    elif "TEENSY_OPT_DEBUG" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-g", "-Og"],
+            LINKFLAGS=["-g", "-Og"]
+        )
+    elif "TEENSY_OPT_DEBUG_LTO" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-g", "-Og", "-flto", "-fno-fat-lto-objects"],
+            LINKFLAGS=["-g", "-Og", "-flto", "-fno-fat-lto-objects", "-fuse-linker-plugin"]
+        )
+    elif "TEENSY_OPT_SMALLEST_CODE" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-Os", "--specs=nano.specs"],
+            LINKFLAGS=["-Os", "--specs=nano.specs"]
+        )
+    elif "TEENSY_OPT_SMALLEST_CODE_LTO" in env['CPPDEFINES']:
+        env.Append(
+            CCFLAGS=["-Os", "--specs=nano.specs", "-flto", "-fno-fat-lto-objects"],
+            LINKFLAGS=["-Os", "--specs=nano.specs", "-flto", "-fno-fat-lto-objects", "-fuse-linker-plugin"]
+        )
+    # TEENSY_OPT_FASTER
+    else:
+        env.Append(CCFLAGS=["-O2"], LINKFLAGS=["-O2"])
+
+
 env.Append(
     ASFLAGS=env.get("CCFLAGS", [])[:]
 )

From a058f034c9ac20154a867d93cd173fe9592e8c7f Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Thu, 31 Jan 2019 18:35:44 +0200
Subject: [PATCH 5/5] Bump version to 3.7.1

---
 platform.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform.json b/platform.json
index 8a3d94d..13d3a45 100644
--- a/platform.json
+++ b/platform.json
@@ -12,7 +12,7 @@
     "type": "git",
     "url": "https://github.com/platformio/platform-teensy.git"
   },
-  "version": "3.7.0",
+  "version": "3.7.1",
   "packageRepositories": [
     "https://dl.bintray.com/platformio/dl-packages/manifest.json",
     "http://dl.platformio.org/packages/manifest.json"