diff --git a/.circleci/config.yml b/.circleci/config.yml
index b3b97363eeb3f31e41ddf01f01e6f01f52c86204..b86b39f752a38aee24f50bb260f7b6b45d8b722f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -5,13 +5,8 @@ jobs:
     docker:
       - image: cimg/base:current
         environment:
-          CC: ccache gcc -m32
-          PKG_CONFIG_LIBDIR: /usr/lib/i386-linux-gnu/pkgconfig
-          LIBGME_CFLAGS: -I/usr/include
-          LIBGME_LDFLAGS: -lgme
+          CC: ccache gcc
           CCACHE_COMPRESS: true
-          WFLAGS: -Wno-unsuffixed-float-constants
-          GCC81: true
       #- image: ubuntu:trusty
       #  environment:
       #    CC: ccache gcc -m32
@@ -23,16 +18,11 @@ jobs:
       #    GCC48: true
     resource_class: large
     steps:
-      - run:
-          name: Add i386 arch
-          command: sudo dpkg --add-architecture i386
       - run:
           name: Add STJr PPA
           command: |
             sudo apt-get -qq update
-            sudo apt-get -qq -y install dirmngr
-            sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 0B1702D71499D9C25F986507F240F4449D3B0EC6
-            echo "deb http://ppa.launchpad.net/stjr/srb2/ubuntu trusty main" | sudo tee -a /etc/apt/sources.list
+            sudo apt-get -qq install apt-utils
       - run:
           name: Make APT cache folder
           command: mkdir -p /home/circleci/.cache/apt/archives/partial
@@ -49,11 +39,8 @@ jobs:
           keys:
             - v1-SRB2-APT
       - run:
-         name: Uninstall amd64 SDK
-         command: sudo apt-get -o Dir::Cache="/home/circleci/.cache/apt" -qq -y --no-install-recommends remove libcurl4-openssl-dev:amd64
-      - run:
-          name: Install i386 SDK
-          command: sudo apt-get -o Dir::Cache="/home/circleci/.cache/apt" -qq -y --no-install-recommends install git build-essential libpng-dev:i386 libsdl2-mixer-dev:i386 libgme-dev:i386 libcurl4-openssl-dev:i386 libopenmpt-dev:i386 gettext ccache wget gcc-multilib upx openssh-client
+          name: Install SDK
+          command: sudo apt-get -o Dir::Cache="/home/circleci/.cache/apt" -qq -y --no-install-recommends install git build-essential libpng-dev libsdl2-mixer-dev libgme-dev libcurl4-openssl-dev libopenmpt-dev libminiupnpc-dev gettext ccache wget gcc-multilib upx openssh-client
       - run:
           name: make md5sum
           command: sudo find /home/circleci/.cache/apt/archives -type f -print0 | sort -z | sudo xargs -r0 md5sum > /home/circleci/.cache/apt_archives.md5
@@ -62,28 +49,19 @@ jobs:
           paths:
             - /home/circleci/.cache/apt
       - checkout
-      - run:
-          name: Compile without network support
-          command: make -C src LINUX=1 ERRORMODE=1 -k NONET=1 -j4
-      - run:
-          name: wipe build
-          command: make -C src LINUX=1 cleandep
-      - run:
-          name: rebuild depend
-          command: make -C src LINUX=1 clean
       - run:
           name: make master depend file
-          command: find make/linux/SDL/deps/ -type f -print0 | sort -z | xargs -r0 cat > make/linux/SDL.deps
+          command: find make/linux64/SDL/deps/ -type f -print0 | sort -z | xargs -r0 cat > make/linux64/SDL.deps
       - restore_cache:
           keys:
-            - v1-SRB2-{{ .Branch }}-{{ checksum "make/linux/SDL.deps" }}
+            - v1-SRB2-{{ .Branch }}-{{ checksum "make/linux64/SDL.deps" }}
       - run:
           name: Compile
-          command: make -C src LINUX=1 ERRORMODE=1 -k -j4
+          command: make -C src LINUX64=1 ERRORMODE=1 -k -j4
       - store_artifacts:
           path: /home/circleci/SRB2/bin/
           destination: bin
       - save_cache:
-          key: v1-SRB2-{{ .Branch }}-{{ checksum "make/linux/SDL.deps" }}
+          key: v1-SRB2-{{ .Branch }}-{{ checksum "make/linux64/SDL.deps" }}
           paths:
             - /home/circleci/.ccache
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 40b418c0fd936c6f7c7fa3fc5e4714aae828695c..b99a850a013befb96faa8b47e817e3f82a981725 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -447,49 +447,6 @@ Debian stable Clang:
           # make
           echo -e "\e[0Ksection_end:`date +%s`:make\r\e[0K"
 
-Debian stable musl:
-  stage: build
-
-  when: manual
-
-  allow_failure: true
-
-  artifacts:
-    paths:
-      - "bin/"
-      - "src/comptime.h"
-    expose_as: "musl"
-    name: "$CI_PROJECT_PATH_SLUG-$CI_COMMIT_REF_SLUG-$CI_COMMIT_SHORT_SHA-musl"
-
-  variables:
-    CC: musl-gcc
-    LDD: musl-ldd
-
-  script:
-    - - |
-          # apt_toolchain
-          echo -e "\e[0Ksection_start:`date +%s`:apt_toolchain[collapsed=true]\r\e[0KInstalling toolchain packages"
-      - apt-get install gcc
-      - |
-          # apt_toolchain
-          echo -e "\e[0Ksection_end:`date +%s`:apt_toolchain\r\e[0K"
-
-    - - |
-          # apt_development
-          echo -e "\e[0Ksection_start:`date +%s`:apt_development[collapsed=true]\r\e[0KInstalling development packages"
-      - apt-get install musl-tools
-      - |
-          # apt_development
-          echo -e "\e[0Ksection_end:`date +%s`:apt_development\r\e[0K"
-
-    - - |
-          # make
-          echo -e "\e[0Ksection_start:`date +%s`:make[collapsed=false]\r\e[0KCompiling SRB2"
-      - make --directory=src --keep-going CCACHE=1 ERRORMODE=1 NONX86=1 SDL=0 NOHW=1 NOZLIB=1 NOCURL=1 NOGME=1 NOOPENMPT=1 || make --directory=src --keep-going CCACHE=1 ERRORMODE=1 NONX86=1 SDL=0 NOHW=1 NOZLIB=1 NOCURL=1 NOGME=1 NOOPENMPT=1 NOUPNP=1
-      - |
-          # make
-          echo -e "\e[0Ksection_end:`date +%s`:make\r\e[0K"
-
 Debian testing Clang:
   extends: Debian stable Clang
 
@@ -510,25 +467,6 @@ Debian testing Clang:
     CFLAGS: -Wno-cast-align -Wno-deprecated-non-prototype
     LDFLAGS: -Wl,-fuse-ld=gold
 
-Debian testing musl:
-  extends: Debian stable musl
-
-  when: manual
-
-  image: debian:testing-slim
-
-  artifacts:
-    paths:
-      - "bin/"
-      - "src/comptime.h"
-    expose_as: "testing-musl"
-    name: "$CI_PROJECT_PATH_SLUG-$CI_COMMIT_REF_SLUG-$CI_COMMIT_SHORT_SHA-testing-musl"
-
-  variables:
-    CC: musl-gcc
-    LDD: musl-ldd
-    LDFLAGS: -Wl,-fuse-ld=gold
-
 Alpine 3 GCC:
   stage: build
 
diff --git a/src/Makefile.d/features.mk b/src/Makefile.d/features.mk
index a4e9a3783a3235a9395dae981e7e40702f83068f..d132ecc9e69517a3536eccad071fd5841ebb2a91 100644
--- a/src/Makefile.d/features.mk
+++ b/src/Makefile.d/features.mk
@@ -55,6 +55,7 @@ endif
 # (Valgrind is a memory debugger.)
 ifdef VALGRIND
 VALGRIND_PKGCONFIG?=valgrind
+VALGRIND_LDFLAGS=
 $(eval $(call Use_pkg_config,VALGRIND))
 ZDEBUG=1
 opts+=-DHAVE_VALGRIND
diff --git a/src/Makefile.d/versions.mk b/src/Makefile.d/versions.mk
index 2523d7f3c25f6c519e67d728417a40e9e052e883..b639ad9a13cb45a898d5c3d5b9d773b3203c2daf 100644
--- a/src/Makefile.d/versions.mk
+++ b/src/Makefile.d/versions.mk
@@ -84,6 +84,9 @@ endif
  WFLAGS+=-Wnested-externs
 #WFLAGS+=-Wunreachable-code
  WFLAGS+=-Winline
+ifdef DEBUGMODE
+ WFLAGS+=-Wno-error=inline
+endif
 ifdef GCC43
  WFLAGS+=-funit-at-a-time
  WFLAGS+=-Wlogical-op
diff --git a/src/doomdef.h b/src/doomdef.h
index 29cd4852f00ecd511d379d7698ec6534161a820b..36602583966ae55e537f2f3f257739b39adbef03 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -109,11 +109,19 @@ FILE *fopenfile(const char*, const char*);
 
 // If you don't disable ALL debug first, you get ALL debug enabled
 #if !defined (NDEBUG)
+#ifndef PACKETDROP
 #define PACKETDROP
+#endif
+#ifndef PARANOIA
 #define PARANOIA
+#endif
+#ifndef RANGECHECK
 #define RANGECHECK
+#endif
+#ifndef ZDEBUG
 #define ZDEBUG
 #endif
+#endif
 
 // Uncheck this to compile debugging code
 //#define RANGECHECK
diff --git a/src/m_menu.c b/src/m_menu.c
index 0012bd599c3558236fde8b150333e8fa78a50117..f62ab127d2c86c95a4a79de6e23d1a30e977ef41 100644
--- a/src/m_menu.c
+++ b/src/m_menu.c
@@ -2753,7 +2753,7 @@ void M_ChangeMenuMusic(const char *defaultmusname, boolean defaultmuslooping)
 
 void M_SetMenuCurBackground(const char *defaultname)
 {
-	char name[9];
+	char name[9] = "";
 	strncpy(name, defaultname, 8);
 	name[8] = '\0';
 	M_IterateMenuTree(MIT_SetCurBackground, &name);
diff --git a/src/netcode/mserv.c b/src/netcode/mserv.c
index 6d6fac26faed55e4b7bfa7512bb16ddab8ee1cfb..3acacd24c164471057ca3ffa7a6225f8ba95d2f3 100644
--- a/src/netcode/mserv.c
+++ b/src/netcode/mserv.c
@@ -501,7 +501,7 @@ static void
 Update_parameters (void)
 {
 #ifdef MASTERSERVER
-	int registered;
+	int registered = 0;
 	int delayed;
 
 	if (Online())