diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index a646a4821..9b6585e6a 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -10,6 +10,8 @@ on:
 jobs:
   build_mac_x64:
     runs-on: macos-13
+    env:
+      MACOSX_DEPLOYMENT_TARGET: 12.0
     steps:
       - uses: actions/checkout@v4
         with:
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 33d5948c7..91c4c3620 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -859,7 +859,7 @@ if(ENABLE_CHANNELRX_REMOTETCPSINK)
     ExternalProject_Add(flac
             GIT_REPOSITORY https://github.com/xiph/flac.git
             PREFIX "${EXTERNAL_BUILD_LIBRARIES}/flac"
-            CMAKE_ARGS ${COMMON_CMAKE_ARGS} -DINSTALL_MANPAGES=OFF -D=BUILD_SHARED_LIBS=ON -DWITH_FORTIFY_SOURCE=OFF -DWITH_STACK_PROTECTOR=PFF -DBUILD_PROGRAMS=OFF -DBUILD_TESTING=OFF -DBUILD_EXAMPLES=OFF -DWITH_OGG=OFF -DBUILD_DOCS=OFF
+            CMAKE_ARGS ${COMMON_CMAKE_ARGS} -DINSTALL_MANPAGES=OFF -DBUILD_SHARED_LIBS=ON -DWITH_FORTIFY_SOURCE=OFF -DWITH_STACK_PROTECTOR=PFF -DBUILD_PROGRAMS=OFF -DBUILD_TESTING=OFF -DBUILD_EXAMPLES=OFF -DWITH_OGG=OFF -DBUILD_DOCS=OFF
             BUILD_BYPRODUCTS "${FLAC_LIBRARIES}"
             INSTALL_COMMAND ""
             TEST_COMMAND ""
diff --git a/sdrbase/util/radiosonde.cpp b/sdrbase/util/radiosonde.cpp
index 34c2b0124..124e1d4c2 100644
--- a/sdrbase/util/radiosonde.cpp
+++ b/sdrbase/util/radiosonde.cpp
@@ -76,6 +76,12 @@ QString RS41Frame::toHex()
     return m_bytes.toHex();
 }
 
+int16_t RS41Frame::getInt16(const QByteArray ba, int offset) const
+{
+    return (ba[offset] & 0xff)
+        | ((ba[offset+1] & 0xff) << 8);
+}
+
 uint16_t RS41Frame::getUInt16(const QByteArray ba, int offset) const
 {
     return (ba[offset] & 0xff)
@@ -130,7 +136,7 @@ void RS41Frame::decodeMeas(const QByteArray ba)
     m_pressureMain = getUInt24(ba, 0x1b);
     m_pressureRef1 = getUInt24(ba, 0x1e);
     m_pressureRef2 = getUInt24(ba, 0x21);
-    m_pressureTemp = getUInt16(ba, 0x26) / 100.0f;
+    m_pressureTemp = getInt16(ba, 0x26) / 100.0f;
 }
 
 void RS41Frame::decodeGPSInfo(const QByteArray ba)
@@ -187,7 +193,7 @@ static float waterVapourSaturationPressure(float tCelsius)
     return p / 100.0f;
 }
 
-static float calcT(int f, int f1, int f2, float r1, float r2, float *poly, float *cal)
+static float calcT(int f, int f1, int f2, float r1, float r2, const float *poly, const float *cal)
 {
     /*float g = (float)(f2-f1) / (r2-r1);       // gain
     float Rb = (f1*r2-f2*r1) / (float)(f2-f1); // offset
@@ -219,7 +225,7 @@ static float calcT(int f, int f1, int f2, float r1, float r2, float *poly, float
     return tCal;
 }
 
-static float calcU(int cInt, int cMin, int cMax, float c1, float c2, float T, float HT, float *capCal, float *matrixCal, float height, float *vectorPCal, float *matrixPCal)
+static float calcU(int cInt, int cMin, int cMax, float c1, float c2, float T, float HT, const float *capCal, const float *matrixCal, float height, const float *vectorPCal, const float *matrixPCal)
 {
     //qDebug() << "cInt " << cInt << " cMin " << cMin << " cMax " << cMax << " c1 " << c1 << " c2 " << c2 << " T " << T << " HT " << HT << " capCal[0] " << capCal[0] << " capCal[1] " << capCal[1] << "height" << height;
 
@@ -302,7 +308,7 @@ static float calcU(int cInt, int cMin, int cMax, float c1, float c2, float T, fl
     return uCal;
 }
 
-static float calcP(int f, int f1, int f2, float pressureTemp, float *cal)
+static float calcP(int f, int f1, int f2, float pressureTemp, const float *cal)
 {
     // Convert integer measurement to scale factor
     float s = (f-f1) / (float)(f2-f1);
diff --git a/sdrbase/util/radiosonde.h b/sdrbase/util/radiosonde.h
index 2136d4cd1..001af7fca 100644
--- a/sdrbase/util/radiosonde.h
+++ b/sdrbase/util/radiosonde.h
@@ -124,6 +124,7 @@ public:
     static int getFrameLength(int frameType);
 
 protected:
+    int16_t getInt16(const QByteArray ba, int offset) const;
     uint16_t getUInt16(const QByteArray ba, int offset) const;
     uint32_t getUInt24(const QByteArray ba, int offset) const;
     uint32_t getUInt32(const QByteArray ba, int offset) const;
diff --git a/wdsp/emnr.cpp b/wdsp/emnr.cpp
index 27c656710..6e6660e3a 100644
--- a/wdsp/emnr.cpp
+++ b/wdsp/emnr.cpp
@@ -444,6 +444,7 @@ EMNR::G::G(
     std::copy(Calculus::GG.begin(), Calculus::GG.end(), GG.begin());
     std::copy(Calculus::GGS.begin(), Calculus::GGS.end(), GGS.begin());
 
+    /* Removed as redundant and causes a stack overflow on Mac - see #2324
     // We keep this pretty useless part just in case...
     if ((fileb = fopen("calculus", "rb")))
     {
@@ -462,7 +463,7 @@ EMNR::G::G(
             std::copy(ggs.begin(), ggs.end(), GGS.begin());
         }
         fclose(fileb);
-    }
+    }*/
 }
 
 void EMNR::G::calc_gamma0()