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Linux/FreeBSD: Enable building without AESNI support by setting environment variable DISABLE_AESNI to 1 during build or passing NOAESNI=1 to make command

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This comes following Github issue #892 and which should be solved thanks to this.
This commit is contained in:
Mounir IDRASSI
2022-02-13 18:41:18 +01:00
parent be5bcbf42f
commit d417b2806c
4 changed files with 32 additions and 7 deletions
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2
src/Crypto/cpu.c
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@@ -330,7 +330,9 @@ void DetectX86Features()
g_hasSSE42 = g_hasSSE2 && (cpuid1[2] & (1 << 20));
g_hasSSE41 = g_hasSSE2 && (cpuid1[2] & (1 << 19));
g_hasSSSE3 = g_hasSSE2 && (cpuid1[2] & (1<<9));
#ifndef CRYPTOPP_DISABLE_AESNI
g_hasAESNI = g_hasSSE2 && (cpuid1[2] & (1<<25));
#endif
g_hasCLMUL = g_hasSSE2 && (cpuid1[2] & (1<<1));
#if !defined (_UEFI) && ((defined(__AES__) && defined(__PCLMUL__)) || defined(__INTEL_COMPILER) || CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE)

2
src/Crypto/cpu.h
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@@ -209,7 +209,9 @@ extern "C" {
#endif
#define CRYPTOPP_CPUID_AVAILABLE
#ifndef CRYPTOPP_DISABLE_AESNI
#define TC_AES_HW_CPU
#endif
// these should not be used directly
extern volatile int g_x86DetectionDone;