Fix builds and tests to pass on Linux.

Builds on both 32-bit and 64-bit executables and all tests (except gm.dls stuff obviously, which was excluded) pass on 64-bit Linux. Cannot test the 32-bit executables, as WSL does not support running 32-bit.

README.md

@@ -84,14 +84,17 @@ New features since fork
   - **Supports 32 and 64 bit builds**. The 64-bit version is done with minimal
     changes to get it work, mainly for the future prospect of running the MIDI
     instrument in 64-bit mode. All the tests are passing so it seems to work.
+  - **Supports both Windows and Linux**. Currently, all the tests are compiling
+    on Windows and Linux, both 32-bit and 64-bit, and the tests are passing on
+    64-bit Linux, tested on WSL. 32-bit executables don't run on WSL, so those
+    remain to be tested.
 
 Future goals
 ------------
 
-  - **Cross-platform support for win / mac / linux**. The build is already based 
-    on CMake and compiles on Windows. Cross-platform NASM/YASM macros have been
-    drafted and remain to be tested. Once the project is more mature, I will 
-    try compiling on other platforms.
+  - **Support for mac**. This should be rather easy, as all the macros are
+    designed for cross-platform support, but as I don't have a mac, I cannot
+    test this.
   - **Find a more general solution for skipping opcodes / early outs**. It's
     probably a new opcode "skip" that skips from the opcode to the next out in
     case the signal entering skip and the signal leaving out are both close to

src/sointu.inc

@@ -27,11 +27,18 @@
     %define MANGLE_DATA(d) d
 %endif
 
-%ifidn __OUTPUT_FORMAT__,elf32
+%ifidn __OUTPUT_FORMAT__,elf
     ; on linux, function f with n parameters is mangled as "f"
     %define MANGLE_FUNC(f,n) f
     ; On linux, data label d is mangled as "d"
     %define MANGLE_DATA(d) d
+    %assign BITS 32
+%endif
+
+%ifidn __OUTPUT_FORMAT__,elf64
+    %define MANGLE_FUNC(f,n) f
+    %define MANGLE_DATA(d) d
+    %assign BITS 64
 %endif
 
 %ifidn __OUTPUT_FORMAT__,macho32

tests/CMakeLists.txt

@@ -91,8 +91,10 @@ regression_test(test_oscillat_trisaw ENVELOPE)
 regression_test(test_oscillat_pulse ENVELOPE VCO_PULSE)
 regression_test(test_oscillat_gate ENVELOPE)
 regression_test(test_oscillat_stereo ENVELOPE)
-regression_test(test_oscillat_sample ENVELOPE)
-regression_test(test_oscillat_sample_stereo ENVELOPE)
+if(WIN32) # The samples are currently only GMDLs based, and thus require Windows.
+    regression_test(test_oscillat_sample ENVELOPE)
+    regression_test(test_oscillat_sample_stereo ENVELOPE)
+endif()
 regression_test(test_oscillat_unison ENVELOPE)
 regression_test(test_oscillat_unison_stereo ENVELOPE)
 regression_test(test_oscillat_lfo "ENVELOPE;VCO_SINE;VCO_PULSE;FOP_MULP2")

tests/test_renderer.c

@@ -2,6 +2,7 @@
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <stdbool.h>
 
 #if defined (_WIN32)
 #include <windows.h>
@@ -12,7 +13,19 @@
 
 #include <math.h>
 
-extern void __stdcall su_render();
+#include <stdint.h>
+
+#if UINTPTR_MAX == 0xffffffff // are we 32-bit?
+    #if defined(__clang__) || defined(__GNUC__)
+        #define CALLCONV __attribute__ ((stdcall))
+    #elif defined(_WIN32)
+        #define CALLCONV __stdcall // on 32-bit platforms, we just use stdcall, as all know it
+    #endif
+#else // 64-bit
+    #define CALLCONV  // the asm will use honor honor correct x64 ABI on all 64-bit platforms
+#endif
+extern void CALLCONV su_render(void *);
+
 extern int su_max_samples;
 
 int main(int argc, char* argv[]) {
@@ -25,7 +38,7 @@ int main(int argc, char* argv[]) {
     char actual_output_folder[] = "actual_output/";
     long fsize;
     long bufsize;
-    boolean small_difference;
+    bool small_difference;
     double diff;
 #ifndef SU_USE_16BIT_OUTPUT
     float* buf = NULL;
@@ -84,7 +97,7 @@ int main(int argc, char* argv[]) {
 
     fread((void*)filebuf, su_max_samples * 2, sizeof(*filebuf), f);
 
-    small_difference = FALSE;
+    small_difference = false;
 
     for (n = 0; n < su_max_samples * 2; n++) {
         diff = (double)(buf[n]) - (double)(filebuf[n]);
@@ -97,7 +110,7 @@ int main(int argc, char* argv[]) {
             goto fail;
         }
         else if (diff > 0.0f) {
-            small_difference = TRUE;
+            small_difference = true;
         }
     }