Bug#1027168: onetbb: Please add patch to fix FTBFS on sh4

[John Paul Adrian Glaubitz]

Source: onetbb
Version: 2021.8.0-1
Severity: normal
Tags: patch
User: debian-superh at lists.debian.org
Usertags: sh4
X-Debbugs-Cc: debian-superh at lists.debian.org

Hi!

onetbb currently FTBFS on sh4 because the source code assumes that the target
FPU supports all four rounding modes (FE_TONEAREST, FE_DOWNWARD, FE_UPWARD and
FE_TOWARDZERO) which is not the case on sh4 which supports FE_TONEAREST and
FE_TOWARDZERO only [1].

The attached patch fixes these assumptions for sh4 and makes the code build. I
have already patched and uploaded the package to the unreleased distribution
so that the mold linker can build on sh4 as well.

I will forward the patch later after reformating it.

Thanks,
Adrian

> [1] https://sourceware.org/pipermail/libc-alpha/2012-May/031608.html

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: :' :  Debian Developer
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-------------- next part --------------
--- onetbb-2021.8.0.orig/test/common/fp_control.h
+++ onetbb-2021.8.0/test/common/fp_control.h
@@ -112,7 +112,11 @@ inline void SetRoundingMode ( int mode )
 
 #include <fenv.h>
 
+#if defined(__sh__)
+const int RND_MODE_MASK = FE_TONEAREST | FE_TOWARDZERO;
+#else
 const int RND_MODE_MASK = FE_TONEAREST | FE_DOWNWARD | FE_UPWARD | FE_TOWARDZERO;
+#endif
 
 const int NumSseModes = 1;
 const int SseModes[NumSseModes] = { 0 };
@@ -125,8 +129,13 @@ inline void SetSseMode ( int ) {}
 
 #endif /* Other archs */
 
+#if defined(__sh__)
+const int NumRoundingModes = 2;
+const int RoundingModes[NumRoundingModes] = { FE_TONEAREST, FE_TOWARDZERO };
+#else
 const int NumRoundingModes = 4;
 const int RoundingModes[NumRoundingModes] = { FE_TONEAREST, FE_DOWNWARD, FE_UPWARD, FE_TOWARDZERO };
+#endif
 const int numFPModes = NumRoundingModes*NumSseModes;
 
 inline void SetFPMode( int mode ) {