It is very rare to see versions of GCC prior to 4.8 being used to build the mainline kernel. These old compilers are also know to have codegen issues which can lead to silent miscompilation: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 Raise the minimum GCC version for kernel build to 4.8 and remove some tautological Kconfig dependencies as a consequence.
Unified · Split
| @@ -29,7 +29,7 @@ you probably needn't concern yourself with pcmciautils. · 28 unmodified lines | ||
| 29 | 29 | ====================== =============== ======================================== |
| 30 | 30 | Program Minimal version Command to check the version |
| 31 | 31 | ====================== =============== ======================================== |
| 32 | −GNU C 4.6 gcc --version | |
| 32 | +GNU C 4.8 gcc --version | |
| 33 | 33 | GNU make 3.81 make --version |
| 34 | 34 | binutils 2.23 ld -v |
| 35 | 35 | flex 2.5.35 flex --version |
| @@ -30,7 +30,7 @@ config CRYPTO_SHA1_ARM_NEON · 29 unmodified lines | ||
| 30 | 30 | |
| 31 | 31 | config CRYPTO_SHA1_ARM_CE |
| 32 | 32 | tristate "SHA1 digest algorithm (ARM v8 Crypto Extensions)" |
| 33 | − depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800) | |
| 33 | + depends on KERNEL_MODE_NEON | |
| 34 | 34 | select CRYPTO_SHA1_ARM |
| 35 | 35 | select CRYPTO_HASH |
| 36 | 36 | help |
| @@ -39,7 +39,7 @@ config CRYPTO_SHA1_ARM_CE · 2 unmodified lines | ||
| 39 | 39 | |
| 40 | 40 | config CRYPTO_SHA2_ARM_CE |
| 41 | 41 | tristate "SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)" |
| 42 | − depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800) | |
| 42 | + depends on KERNEL_MODE_NEON | |
| 43 | 43 | select CRYPTO_SHA256_ARM |
| 44 | 44 | select CRYPTO_HASH |
| 45 | 45 | help |
| @@ -96,7 +96,7 @@ config CRYPTO_AES_ARM_BS · 50 unmodified lines | ||
| 96 | 96 | |
| 97 | 97 | config CRYPTO_AES_ARM_CE |
| 98 | 98 | tristate "Accelerated AES using ARMv8 Crypto Extensions" |
| 99 | − depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800) | |
| 99 | + depends on KERNEL_MODE_NEON | |
| 100 | 100 | select CRYPTO_SKCIPHER |
| 101 | 101 | select CRYPTO_LIB_AES |
| 102 | 102 | select CRYPTO_SIMD |
| @@ -106,7 +106,7 @@ config CRYPTO_AES_ARM_CE · 3 unmodified lines | ||
| 106 | 106 | |
| 107 | 107 | config CRYPTO_GHASH_ARM_CE |
| 108 | 108 | tristate "PMULL-accelerated GHASH using NEON/ARMv8 Crypto Extensions" |
| 109 | − depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800) | |
| 109 | + depends on KERNEL_MODE_NEON | |
| 110 | 110 | select CRYPTO_HASH |
| 111 | 111 | select CRYPTO_CRYPTD |
| 112 | 112 | select CRYPTO_GF128MUL |
| @@ -118,13 +118,13 @@ config CRYPTO_GHASH_ARM_CE · 5 unmodified lines | ||
| 118 | 118 | |
| 119 | 119 | config CRYPTO_CRCT10DIF_ARM_CE |
| 120 | 120 | tristate "CRCT10DIF digest algorithm using PMULL instructions" |
| 121 | − depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800) | |
| 121 | + depends on KERNEL_MODE_NEON | |
| 122 | 122 | depends on CRC_T10DIF |
| 123 | 123 | select CRYPTO_HASH |
| 124 | 124 | |
| 125 | 125 | config CRYPTO_CRC32_ARM_CE |
| 126 | 126 | tristate "CRC32(C) digest algorithm using CRC and/or PMULL instructions" |
| 127 | − depends on KERNEL_MODE_NEON && (CC_IS_CLANG || GCC_VERSION >= 40800) | |
| 127 | + depends on KERNEL_MODE_NEON | |
| 128 | 128 | depends on CRC32 |
| 129 | 129 | select CRYPTO_HASH |
| 130 | 130 | |
| @@ -316,7 +316,6 @@ config CRYPTO_AEGIS128 · 315 unmodified lines | ||
| 316 | 316 | config CRYPTO_AEGIS128_SIMD |
| 317 | 317 | bool "Support SIMD acceleration for AEGIS-128" |
| 318 | 318 | depends on CRYPTO_AEGIS128 && ((ARM || ARM64) && KERNEL_MODE_NEON) |
| 319 | − depends on !ARM || CC_IS_CLANG || GCC_VERSION >= 40800 | |
| 320 | 319 | default y |
| 321 | 320 | |
| 322 | 321 | config CRYPTO_AEGIS128_AESNI_SSE2 |
| @@ -10,7 +10,8 @@ · 9 unmodified lines | ||
| 10 | 10 | + __GNUC_MINOR__ * 100 \ |
| 11 | 11 | + __GNUC_PATCHLEVEL__) |
| 12 | 12 | |
| 13 | −#if GCC_VERSION < 40600 | |
| 13 | +/* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 */ | |
| 14 | +#if GCC_VERSION < 40800 | |
| 14 | 15 | # error Sorry, your compiler is too old - please upgrade it. |
| 15 | 16 | #endif |
| 16 | 17 | |
| @@ -126,9 +127,7 @@ · 109 unmodified lines | ||
| 126 | 127 | #if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) && !defined(__CHECKER__) |
| 127 | 128 | #define __HAVE_BUILTIN_BSWAP32__ |
| 128 | 129 | #define __HAVE_BUILTIN_BSWAP64__ |
| 129 | −#if GCC_VERSION >= 40800 | |
| 130 | 130 | #define __HAVE_BUILTIN_BSWAP16__ |
| 131 | −#endif | |
| 132 | 131 | #endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP && !__CHECKER__ */ |
| 133 | 132 | |
| 134 | 133 | #if GCC_VERSION >= 70000 |
| @@ -1285,7 +1285,6 @@ config LD_DEAD_CODE_DATA_ELIMINATION · 1284 unmodified lines | ||
| 1285 | 1285 | bool "Dead code and data elimination (EXPERIMENTAL)" |
| 1286 | 1286 | depends on HAVE_LD_DEAD_CODE_DATA_ELIMINATION |
| 1287 | 1287 | depends on EXPERT |
| 1288 | − depends on !(FUNCTION_TRACER && CC_IS_GCC && GCC_VERSION < 40800) | |
| 1289 | 1288 | depends on $(cc-option,-ffunction-sections -fdata-sections) |
| 1290 | 1289 | depends on $(ld-option,--gc-sections) |
| 1291 | 1290 | help |
| @@ -8,7 +8,7 @@ config HAVE_GCC_PLUGINS · 7 unmodified lines | ||
| 8 | 8 | menuconfig GCC_PLUGINS |
| 9 | 9 | bool "GCC plugins" |
| 10 | 10 | depends on HAVE_GCC_PLUGINS |
| 11 | − depends on CC_IS_GCC && GCC_VERSION >= 40800 | |
| 11 | + depends on CC_IS_GCC | |
| 12 | 12 | depends on $(success,$(srctree)/scripts/gcc-plugin.sh $(CC)) |
| 13 | 13 | default y |
| 14 | 14 | help |