diff --git a/.github/workflows/retroarch.yml b/.github/workflows/retroarch.yml
index c7f3cd1023..4fc7b93f97 100644
--- a/.github/workflows/retroarch.yml
+++ b/.github/workflows/retroarch.yml
@@ -32,7 +32,8 @@ jobs:
           # (shader_vulkan.c, slang_process.c, glslang_util.c, slang_cache.c)
           # and the Vulkan contexts into this lane; without it configure
           # drops them and none of those C files ever meet -std=c89.
-          pkgs="build-essential libxkbcommon-dev libx11-xcb-dev libvulkan-dev zlib1g-dev libfreetype6-dev libegl1-mesa-dev libgles2-mesa-dev libgbm-dev nvidia-cg-toolkit nvidia-cg-dev libavcodec-dev libsdl2-dev libsdl-image1.2-dev libxml2-dev yasm"
+          # libpipewire-0.3-dev does the same for the PipeWire drivers.
+          pkgs="build-essential libxkbcommon-dev libx11-xcb-dev libvulkan-dev libpipewire-0.3-dev zlib1g-dev libfreetype6-dev libegl1-mesa-dev libgles2-mesa-dev libgbm-dev nvidia-cg-toolkit nvidia-cg-dev libavcodec-dev libsdl2-dev libsdl-image1.2-dev libxml2-dev yasm"
           if dpkg -s $pkgs >/dev/null 2>&1; then
             echo "All packages already present on runner image; skipping apt."
             exit 0
diff --git a/Makefile b/Makefile
index 029cfa6856..992004a6c2 100644
--- a/Makefile
+++ b/Makefile
@@ -131,6 +131,14 @@ ifneq ($(CXX_BUILD), 1)
       # string literal, which no declaration of ours can help: this lane
       # is here for declarations, comments and C99 syntax.
       CFLAGS += -std=c89 -ansi -pedantic -Werror=pedantic -Wno-long-long -Werror=declaration-after-statement -Wno-variadic-macros -Wno-overlength-strings
+      ifeq ($(HAVE_PIPEWIRE), 1)
+         # The SPA headers are C99: read them as system headers, which
+         # takes them out of -pedantic, and give them __inline__.
+         PIPEWIRE_C89_OBJ := $(addprefix $(OBJDIR)/,audio/drivers/pipewire.o \
+               audio/common/pipewire.o camera/drivers/pipewire.o)
+         $(PIPEWIRE_C89_OBJ): DEFINES += -Dinline=__inline__ \
+               $(patsubst -I%,-isystem %,$(filter -I%,$(PIPEWIRE_CFLAGS)))
+      endif
    else ifeq ($(HAVE_C99), 1)
       CFLAGS += $(C99_CFLAGS)
    endif
diff --git a/audio/common/pipewire.c b/audio/common/pipewire.c
index 65b711a8b7..0f6e7c654f 100644
--- a/audio/common/pipewire.c
+++ b/audio/common/pipewire.c
@@ -53,8 +53,10 @@ static void core_done_cb(void *data, uint32_t id, int seq)
 
 static const struct pw_core_events core_events = {
       PW_VERSION_CORE_EVENTS,
-      .done = core_done_cb,
-      .error = core_error_cb,
+      NULL,          /* info */
+      core_done_cb,
+      NULL,          /* ping */
+      core_error_cb
 };
 
 bool pipewire_loop_wait_ms(struct pw_thread_loop *loop, unsigned ms)
diff --git a/audio/drivers/pipewire.c b/audio/drivers/pipewire.c
index 3b2312aac8..0487124cfc 100644
--- a/audio/drivers/pipewire.c
+++ b/audio/drivers/pipewire.c
@@ -142,8 +142,8 @@ static void pwire_set_position_layout(uint32_t layout,
       { AUDIO_SPEAKER_SIDE_RIGHT,            SPA_AUDIO_CHANNEL_SR  },
    };
    size_t i, n = 0;
-   memcpy(position, (uint32_t[SPA_AUDIO_MAX_CHANNELS]) { SPA_AUDIO_CHANNEL_UNKNOWN, },
-         sizeof(uint32_t) * SPA_AUDIO_MAX_CHANNELS);
+   for (i = 0; i < SPA_AUDIO_MAX_CHANNELS; i++)
+      position[i] = SPA_AUDIO_CHANNEL_UNKNOWN;
    for (i = 0; i < ARRAY_SIZE(map); i++)
       if (layout & map[i].bit)
          position[n++] = map[i].spa;
@@ -153,8 +153,9 @@ static void pwire_set_position(uint32_t channels, uint32_t position[SPA_AUDIO_MA
 {
    if (channels == 1)
    {
-      memcpy(position, (uint32_t[SPA_AUDIO_MAX_CHANNELS]) { SPA_AUDIO_CHANNEL_UNKNOWN, },
-            sizeof(uint32_t) * SPA_AUDIO_MAX_CHANNELS);
+      size_t i;
+      for (i = 1; i < SPA_AUDIO_MAX_CHANNELS; i++)
+         position[i] = SPA_AUDIO_CHANNEL_UNKNOWN;
       position[0] = SPA_AUDIO_CHANNEL_MONO;
       return;
    }
@@ -224,9 +225,14 @@ static void pwire_capture_process_cb(void *data)
 
 static const struct pw_stream_events capture_stream_events = {
       PW_VERSION_STREAM_EVENTS,
-     .destroy       = pwire_stream_destroy_cb,
-     .state_changed = pwire_mic_stream_state_changed_cb,
-     .process       = pwire_capture_process_cb
+      pwire_stream_destroy_cb,
+      pwire_mic_stream_state_changed_cb,
+      NULL,          /* control_info */
+      NULL,          /* io_changed */
+      NULL,          /* param_changed */
+      NULL,          /* add_buffer */
+      NULL,          /* remove_buffer */
+      pwire_capture_process_cb
 };
 
 static void pwire_mic_registry_event_global(void *data, uint32_t id,
@@ -260,7 +266,7 @@ static void pwire_mic_registry_event_global(void *data, uint32_t id,
 
 static const struct pw_registry_events pwire_mic_registry_events = {
       PW_VERSION_REGISTRY_EVENTS,
-      .global = pwire_mic_registry_event_global,
+      pwire_mic_registry_event_global
 };
 
 static void pwire_microphone_free(void *driver_context)
@@ -735,9 +741,14 @@ static void pwire_stream_state_changed_cb(void *data,
 
 static const struct pw_stream_events pwire_playback_stream_events = {
       PW_VERSION_STREAM_EVENTS,
-      .destroy       = pwire_stream_destroy_cb,
-      .process       = pwire_playback_process_cb,
-      .state_changed = pwire_stream_state_changed_cb,
+      pwire_stream_destroy_cb,
+      pwire_stream_state_changed_cb,
+      NULL,          /* control_info */
+      NULL,          /* io_changed */
+      NULL,          /* param_changed */
+      NULL,          /* add_buffer */
+      NULL,          /* remove_buffer */
+      pwire_playback_process_cb
 };
 
 static void pwire_registry_event_global(void *data, uint32_t id,
@@ -768,7 +779,7 @@ static void pwire_registry_event_global(void *data, uint32_t id,
 
 static const struct pw_registry_events pwire_registry_events = {
       PW_VERSION_REGISTRY_EVENTS,
-      .global = pwire_registry_event_global,
+      pwire_registry_event_global
 };
 
 /* Context-free enumeration: bring up a throwaway core with the same
diff --git a/camera/drivers/pipewire.c b/camera/drivers/pipewire.c
index 77fb5af24d..7de078ae5f 100644
--- a/camera/drivers/pipewire.c
+++ b/camera/drivers/pipewire.c
@@ -87,10 +87,11 @@ static struct
 
 static uint32_t id_to_scaler_format(uint32_t id)
 {
-   SPA_FOR_EACH_ELEMENT_VAR(scaler_video_formats, f)
+   size_t i;
+   for (i = 0; i < SPA_N_ELEMENTS(scaler_video_formats); i++)
    {
-      if (f->id == id)
-         return f->format;
+      if (scaler_video_formats[i].id == id)
+         return scaler_video_formats[i].format;
    }
    return SCALER_FMT_ARGB8888;
 }
@@ -101,6 +102,7 @@ static int build_format(struct spa_pod_builder *b, const struct spa_pod **params
    uint32_t width  = VIDEO_SCALE_W(dims);
    uint32_t height = VIDEO_SCALE_H(dims);
    struct spa_pod_frame frame[2];
+   size_t i;
 
    /* make an object of type SPA_TYPE_OBJECT_Format and id SPA_PARAM_EnumFormat.
     * The object type is important because it defines the properties that are
@@ -117,9 +119,9 @@ static int build_format(struct spa_pod_builder *b, const struct spa_pod **params
    spa_pod_builder_prop(b, SPA_FORMAT_VIDEO_format, 0);
    spa_pod_builder_push_choice(b, &frame[1], SPA_CHOICE_Enum, 0);
    spa_pod_builder_id(b, SPA_VIDEO_FORMAT_YUY2);  /* default */
-   SPA_FOR_EACH_ELEMENT_VAR(scaler_video_formats, f)
+   for (i = 0; i < SPA_N_ELEMENTS(scaler_video_formats); i++)
    {
-      uint32_t id = f->id;
+      uint32_t id = scaler_video_formats[i].id;
       if (id != SPA_VIDEO_FORMAT_UNKNOWN)
          spa_pod_builder_id(b, id);  /* alternative */
    }
@@ -255,6 +257,7 @@ static void stream_param_changed_cb(void *data, uint32_t id, const struct spa_po
 {
    uint8_t params_buffer[1024];
    const struct spa_pod *params[5];
+   struct spa_pod_frame frame;
    unsigned input_stride;
    pipewire_camera_t *camera = (pipewire_camera_t*)data;
    struct spa_pod_builder b = SPA_POD_BUILDER_INIT(params_buffer, sizeof(params_buffer));
@@ -329,7 +332,6 @@ static void stream_param_changed_cb(void *data, uint32_t id, const struct spa_po
          break;
    }
 
-   struct spa_pod_frame frame;
    spa_pod_builder_push_object(&b, &frame, SPA_TYPE_OBJECT_ParamBuffers, SPA_PARAM_Buffers);
    spa_pod_builder_add(&b,
          SPA_PARAM_BUFFERS_stride,   SPA_POD_Int(input_stride),
@@ -378,10 +380,11 @@ static void stream_param_changed_cb(void *data, uint32_t id, const struct spa_po
 
 static const struct pw_stream_events stream_events = {
       PW_VERSION_STREAM_EVENTS,
-      .state_changed = stream_state_changed_cb,
-      .io_changed = stream_io_changed_cb,
-      .param_changed = stream_param_changed_cb,
-      .process = NULL,
+      NULL,          /* destroy */
+      stream_state_changed_cb,
+      NULL,          /* control_info */
+      stream_io_changed_cb,
+      stream_param_changed_cb
 };
 
 static void pwire_camera_stop(void *data)