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package/libopenssl does not support riscv32

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riscv32 is (surprise!) a 32-bit architecture. But it has been Y2038-safe
from its inception. As such, there are no legacy binaries that may use
the 32-bit time syscalls, and thus they are not available on riscv32.

Code that directly calls to the syscalls without using the C libraries
wrappers thus need to handle this case by themselves. That's what
upstream tried to do with:
    5b5e2985f3

We initially carried that patch with 2bb26c1a1d (package/libopenssl:
fix build on riscv32).

However, as Arnd Bergmann puts it [0]:

    The patch looks wrong to me: __NR_io_pgetevents_time64 must be used
    whenever time_t is 64-bit wide on a 32-bit architecture, while
    __NR_io_getevents/__NR_io_pgetevents must be used when time_t is the
    same width as 'long'.

    Checking whether __NR_io_getevents is defined is wrong for all
    architectures other than riscv

And Arnd agrees that patch should be reverted [1] [2] (there are further
comments in that stream, that are worth reading).

As such, we've reverted 2bb26c1a1d with 6cfb4ad7f7.

This means we have no working solution to enable openssl on riscv32 for
now. So, rather than fail the build, or backport a dysfunctional patch,
let's just forbid openssl on riscv32.

Drop the default from the choice selection; it was anyway superfluous:
the default of a choice, if left unspecified, is the first entry of the
choice. Also, having a default means we'd have to also propagate the
dependencies of the defaulted-to symbol, which is yet a little bit more
maintenance. Since the chances we get a third implementation of openssl
are pretty slim (very, very slim), reasoning about what is the default
is still very easy.

When propagating dependencies to tpm2-tss' users, we've tried to keep
the architecture dependency toward the top when possible, and otherwise
we've added it together with existing arch dependencies (MMU).

While at it, drop a useless redundant comment in ibm-sw-tpm2: if we
select FORCE_LIBOPENSSL, it is obvious that's because libressl is not
supported... Besides none of the other users of FORCE_LIBOPENSSL have
such a comment.

Fixes:
    http://autobuild.buildroot.org/results/eb9/eb9a64d4ffae8569b5225083f282cf87ffa7c681/
    ...
    http://autobuild.buildroot.org/results/07e/07e413b24ba8adc9558c80267ce16dda339bf032/

[0] 5b5e2985f3 (commitcomment-44782859)
[1] 5b5e2985f3 (commitcomment-47826509)
[2] 5b5e2985f3 (commitcomment-47830530)

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Matthew Weber <matthew.weber@rockwellcollins.com>
Cc: Mark Corbin <mark@dibsco.co.uk>
This commit is contained in:
Yann E. MORIN
2021-03-03 19:16:34 +01:00
parent e5594f7239
commit c72be5dd2f
11 changed files with 26 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
package/hostapd/Config.in
View File

@@ -76,6 +76,7 @@ config BR2_PACKAGE_HOSTAPD_WPS
config BR2_PACKAGE_HOSTAPD_WPA3
bool "Enable WPA3 support"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
select BR2_PACKAGE_OPENSSL
select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
help

3
package/ibm-sw-tpm2/Config.in
View File

@@ -2,8 +2,8 @@ config BR2_PACKAGE_IBM_SW_TPM2
bool "ibm-sw-tpm2"
depends on BR2_TOOLCHAIN_HAS_THREADS
depends on !BR2_STATIC_LIBS # ibm-sw-tpm2
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
select BR2_PACKAGE_OPENSSL
# libressl is not supported
select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
help
This project is an implementation of the TCG TPM 2.0
@@ -14,4 +14,5 @@ config BR2_PACKAGE_IBM_SW_TPM2
https://sourceforge.net/projects/ibmswtpm2/
comment "ibm-sw-tpm2 needs a toolchain w/ threads, dynamic library"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS

2
package/ima-evm-utils/Config.in
View File

@@ -1,6 +1,7 @@
config BR2_PACKAGE_IMA_EVM_UTILS
bool "ima-evm-utils"
depends on BR2_USE_MMU # keyutils
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS # tpm2-tss
depends on !BR2_STATIC_LIBS # keyutils, tpm2-tss
select BR2_PACKAGE_OPENSSL
select BR2_PACKAGE_KEYUTILS
@@ -13,4 +14,5 @@ config BR2_PACKAGE_IMA_EVM_UTILS
comment "ima-evm-utils needs dynamic library support"
depends on BR2_USE_MMU
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on BR2_STATIC_LIBS

8
package/openssl/Config.in
View File

@@ -1,5 +1,11 @@
config BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
bool
default y
depends on !BR2_RISCV_32
config BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
bool
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
config BR2_PACKAGE_OPENSSL
bool "openssl support"
@@ -11,12 +17,12 @@ if BR2_PACKAGE_OPENSSL
choice
prompt "ssl library"
default BR2_PACKAGE_LIBOPENSSL
help
Select OpenSSL or LibreSSL.
config BR2_PACKAGE_LIBOPENSSL
bool "openssl"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
select BR2_PACKAGE_ZLIB
help
A collaborative effort to develop a robust, commercial-grade,

2
package/softether/Config.in
View File

@@ -3,6 +3,7 @@ config BR2_PACKAGE_SOFTETHER
depends on BR2_TOOLCHAIN_HAS_THREADS
depends on BR2_USE_MMU # fork()
depends on BR2_USE_WCHAR
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
select BR2_PACKAGE_LIBICONV if !BR2_ENABLE_LOCALE
select BR2_PACKAGE_OPENSSL
select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
@@ -27,4 +28,5 @@ config BR2_PACKAGE_SOFTETHER
comment "softether needs a toolchain w/ wchar, threads"
depends on BR2_USE_MMU
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on !(BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)

2
package/tpm2-abrmd/Config.in
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@@ -3,6 +3,7 @@ config BR2_PACKAGE_TPM2_ABRMD
depends on BR2_USE_WCHAR # libglib2
depends on BR2_TOOLCHAIN_HAS_THREADS # libglib2
depends on BR2_USE_MMU # libglib2
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS # tpm2-tss
depends on !BR2_STATIC_LIBS # tpm2-tss
select BR2_PACKAGE_LIBGLIB2
select BR2_PACKAGE_TPM2_TSS
@@ -22,5 +23,6 @@ config BR2_PACKAGE_TPM2_ABRMD
comment "tpm2-abrmd needs a toolchain w/ dynamic library, wchar, threads"
depends on BR2_USE_MMU
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || \
BR2_STATIC_LIBS

2
package/tpm2-pkcs11/Config.in
View File

@@ -1,5 +1,6 @@
config BR2_PACKAGE_TPM2_PKCS11
bool "tpm2-pkcs11"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS # tpm2-tss
depends on !BR2_STATIC_LIBS # tpm2-tss
depends on BR2_TOOLCHAIN_HAS_THREADS
select BR2_PACKAGE_LIBYAML
@@ -12,4 +13,5 @@ config BR2_PACKAGE_TPM2_PKCS11
https://github.com/tpm2-software/tpm2-pkcs11
comment "tpm2-pkcs11 needs a toolchain w/ dynamic library, threads"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS

2
package/tpm2-tools/Config.in
View File

@@ -1,5 +1,6 @@
config BR2_PACKAGE_TPM2_TOOLS
bool "tpm2-tools"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS # tpm2-tss
depends on !BR2_STATIC_LIBS # tpm2-tss
select BR2_PACKAGE_LIBCURL
select BR2_PACKAGE_OPENSSL
@@ -19,4 +20,5 @@ config BR2_PACKAGE_TPM2_TOOLS
https://github.com/tpm2-software/tpm2-tools
comment "tpm2-tools needs a toolchain w/ dynamic library"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on BR2_STATIC_LIBS

2
package/tpm2-totp/Config.in
View File

@@ -1,5 +1,6 @@
config BR2_PACKAGE_TPM2_TOTP
bool "tpm2-totp"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS # tpm2-tss
depends on !BR2_STATIC_LIBS # tpm2-tss
depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM # glibc < 2.20
select BR2_PACKAGE_LIBQRENCODE
@@ -19,5 +20,6 @@ config BR2_PACKAGE_TPM2_TOTP
https://github.com/tpm2-software/tpm2-totp
comment "tpm2-totp needs a toolchain w/ dynamic library"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on BR2_STATIC_LIBS
depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM

2
package/tpm2-tss/Config.in
View File

@@ -1,6 +1,7 @@
config BR2_PACKAGE_TPM2_TSS
bool "tpm2-tss"
depends on !BR2_STATIC_LIBS # dlfcn.h
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
select BR2_PACKAGE_LIBURIPARSER
select BR2_PACKAGE_OPENSSL
select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
@@ -55,4 +56,5 @@ config BR2_PACKAGE_TPM2_TSS_FAPI
endif
comment "tpm2-tss needs a toolchain w/ dynamic library"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
depends on BR2_STATIC_LIBS

2
package/wpa_supplicant/Config.in
View File

@@ -49,6 +49,7 @@ config BR2_PACKAGE_WPA_SUPPLICANT_WIFI_DISPLAY
config BR2_PACKAGE_WPA_SUPPLICANT_MESH_NETWORKING
bool "Enable mesh networking"
depends on BR2_PACKAGE_WPA_SUPPLICANT_AP_SUPPORT
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
select BR2_PACKAGE_OPENSSL
select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
help
@@ -83,6 +84,7 @@ config BR2_PACKAGE_WPA_SUPPLICANT_WPS
config BR2_PACKAGE_WPA_SUPPLICANT_WPA3
bool "Enable WPA3 support"
depends on BR2_PACKAGE_LIBOPENSSL_ARCH_SUPPORTS
select BR2_PACKAGE_OPENSSL
select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
help