termux-packages/packages/openfoam/src-OSspecific-POSIX-signals-sigFpe.C.patch

--- ./src/OSspecific/POSIX/signals/sigFpe.C.orig	2021-12-01 03:15:50.000000000 +0100
+++ ./src/OSspecific/POSIX/signals/sigFpe.C	2021-12-01 03:15:50.000000000 +0100
@@ -36,7 +36,7 @@
 
 #include <limits>
 
-#if defined(__linux__) && defined(__GNUC__)
+#if (defined(__linux__) && defined(__GNUC__)) || defined(__ANDROID__)
     #ifndef __USE_GNU
         #define __USE_GNU      // To use feenableexcept()
     #endif
@@ -82,8 +82,11 @@
 #ifdef __linux__
 extern "C"
 {
-    extern void* __libc_malloc(size_t size);
+    extern void* malloc(size_t size);
 
+    // The override below gives segmentation fault in malloc on arm so skip
+    // on android for now.
+    #ifndef __ANDROID__
     // Override the GLIBC malloc to support mallocNan
     void* malloc(size_t size)
     {
@@ -93,16 +96,17 @@
         }
         else
         {
-            return __libc_malloc(size);
+            return malloc(size);
         }
     }
+    #endif
 }
 
 
 void* Foam::sigFpe::mallocNan(size_t size)
 {
     // Call the low-level GLIBC malloc function
-    void* result = __libc_malloc(size);
+    void* result = malloc(size);
 
     // Initialize to signalling NaN
     UList<scalar> list(reinterpret_cast<scalar*>(result), size/sizeof(scalar));
@@ -117,7 +121,7 @@
 
 void Foam::sigFpe::sigHandler(int)
 {
-    #if (defined(__linux__) && defined(__GNUC__)) || defined(__APPLE__)
+    #if (defined(__linux__) && defined(__GNUC__)) || defined(__APPLE__) || defined(__ANDROID__)
 
     resetHandler("SIGFPE", SIGFPE);
 
@@ -125,7 +129,7 @@
     error::printStack(Perr);
     ::raise(SIGFPE);            // Throw signal (to old handler)
 
-    #endif  // (__linux__ && __GNUC__) || __APPLE__
+    #endif  // (__linux__ && __GNUC__) || __APPLE__ || __ANDROID__
 }