diff --git a/boost/android-aarch64/PKGBUILD b/boost/android-aarch64/PKGBUILD
index ba36b239..4bb612f8 100644
--- a/boost/android-aarch64/PKGBUILD
+++ b/boost/android-aarch64/PKGBUILD
@@ -16,7 +16,7 @@ _boost_arch=arm
 _boost_address_model=64
 
 pkgname=android-$_pkg_arch-$_pkgname
-pkgver=1.76.0
+pkgver=1.81.0
 _srcname=boost_${pkgver//./_}
 pkgrel=1
 url='https://www.boost.org/'
@@ -29,18 +29,26 @@ makedepends=('bzip2' 'zlib' 'android-ndk' 'android-sdk')
 conflicts=("android-$_pkgname-$_android_arch")
 replaces=("android-$_pkgname-$_android_arch")
 source=(https://boostorg.jfrog.io/artifactory/main/release/$pkgver/source/$_srcname.tar.gz
+        boost-1.81.0-phoenix-multiple-definitions.patch
         $_pkgname-ublas-c++20-iterator.patch::https://github.com/boostorg/ublas/commit/a31e5cffa85f.patch
-        no-versioned-shlibs.patch)
-sha256sums=('7bd7ddceec1a1dfdcbdb3e609b60d01739c38390a5f956385a12f3122049f0ca'
+        no-versioned-shlibs.patch
+        disable-version-check.patch)
+sha256sums=('71feeed900fbccca04a3b4f2f84a7c217186f28a940ed8b7ed4725986baf99fa'
+            '3ebf428ef6be090a7b56a233330375539ac429333b83708e28fe5db049cfecdb'
             'aa38addb40d5f44b4a8472029b475e7e6aef1c460509eb7d8edf03491dc1b5ee'
-            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23')
+            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23'
+            '4520ebaa7ca5233478024e6aa57a6c9a0893967fed4461dff6f43035790a64d9')
 
 prepare() {
   cd ${_srcname}
+  # https://github.com/boostorg/phoenix/issues/111
+  patch -Np1 -i ../boost-1.81.0-phoenix-multiple-definitions.patch
+
   # https://github.com/boostorg/ublas/pull/97
   patch -Np2 -i ../$_pkgname-ublas-c++20-iterator.patch
 
   patch -i ../no-versioned-shlibs.patch
+  patch -i ../disable-version-check.patch
 }
 
 build() {
diff --git a/boost/android-aarch64/boost-1.81.0-phoenix-multiple-definitions.patch b/boost/android-aarch64/boost-1.81.0-phoenix-multiple-definitions.patch
new file mode 100644
index 00000000..0aedde6d
--- /dev/null
+++ b/boost/android-aarch64/boost-1.81.0-phoenix-multiple-definitions.patch
@@ -0,0 +1,11 @@
+https://bugs.gentoo.org/887041
+https://github.com/boostorg/phoenix/issues/111
+--- a/boost/phoenix/stl.hpp
++++ b/boost/phoenix/stl.hpp
+@@ -11,6 +11,5 @@
+ 
+ #include <boost/phoenix/stl/algorithm.hpp>
+ #include <boost/phoenix/stl/container.hpp>
+-#include <boost/phoenix/stl/tuple.hpp>
+ 
+ #endif
diff --git a/boost/android-aarch64/disable-version-check.patch b/boost/android-aarch64/disable-version-check.patch
index 3469b005..8774fe12 100644
--- a/boost/android-aarch64/disable-version-check.patch
+++ b/boost/android-aarch64/disable-version-check.patch
@@ -1,27 +1,33 @@
---- a/tools/build/src/tools/common.jam	2019-09-18 16:03:02.035995695 +0200
-+++ b/tools/build/src/tools/common.jam	2019-09-18 16:03:36.386156355 +0200
-@@ -974,16 +974,16 @@
+--- tools/build/src/tools/common.jam.orig	2023-02-03 10:57:59.385098144 +0100
++++ tools/build/src/tools/common.jam	2023-02-03 11:00:34.982146918 +0100
+@@ -1127,18 +1127,18 @@
+         import $(toolset) ;
+         local tool-version = [ $(toolset).get-full-version $(command) ] ;
+ 
+-        import version ;
+-        if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
+-                                        : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
+-        {
+-            errors.error toolset $(toolset) "initialization:"
+-                : version '$(version)' requested but
+-                    '$(tool)-$(version)' not found and version
+-                    '$(tool-version:J=.)' of default '$(command)'
+-                    does not match
+-                : initialized from [ errors.nearest-user-location ]
+-                ;
+-        }
++        #import version ;
++        #if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
++        #                                : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
++        #{
++        #    errors.error toolset $(toolset) "initialization:"
++        #        : version '$(version)' requested but
++        #            '$(tool)-$(version)' not found and version
++        #            '$(tool-version:J=.)' of default '$(command)'
++        #            does not match
++        #        : initialized from [ errors.nearest-user-location ]
++        #        ;
++        #}
      }
- 
-     # From GCC 5, versioning changes and minor becomes patch
--    if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # Ditto, from Clang 4
--    if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # On intel, version is not added, because it does not matter and it is the
-     # version of vc used as backend that matters. Ideally, we should encode the
+     #3) default: no command and no version specified, try using "$(tool)"
+     else
diff --git a/boost/android-armv7a-eabi/PKGBUILD b/boost/android-armv7a-eabi/PKGBUILD
index c5265c71..b4eabcae 100644
--- a/boost/android-armv7a-eabi/PKGBUILD
+++ b/boost/android-armv7a-eabi/PKGBUILD
@@ -16,7 +16,7 @@ _boost_arch=arm
 _boost_address_model=32
 
 pkgname=android-$_pkg_arch-$_pkgname
-pkgver=1.76.0
+pkgver=1.81.0
 _srcname=boost_${pkgver//./_}
 pkgrel=1
 url='https://www.boost.org/'
@@ -29,18 +29,26 @@ makedepends=('bzip2' 'zlib' 'android-ndk' 'android-sdk')
 conflicts=("android-$_pkgname-$_android_arch")
 replaces=("android-$_pkgname-$_android_arch")
 source=(https://boostorg.jfrog.io/artifactory/main/release/$pkgver/source/$_srcname.tar.gz
+        boost-1.81.0-phoenix-multiple-definitions.patch
         $_pkgname-ublas-c++20-iterator.patch::https://github.com/boostorg/ublas/commit/a31e5cffa85f.patch
-        no-versioned-shlibs.patch)
-sha256sums=('7bd7ddceec1a1dfdcbdb3e609b60d01739c38390a5f956385a12f3122049f0ca'
+        no-versioned-shlibs.patch
+        disable-version-check.patch)
+sha256sums=('71feeed900fbccca04a3b4f2f84a7c217186f28a940ed8b7ed4725986baf99fa'
+            '3ebf428ef6be090a7b56a233330375539ac429333b83708e28fe5db049cfecdb'
             'aa38addb40d5f44b4a8472029b475e7e6aef1c460509eb7d8edf03491dc1b5ee'
-            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23')
+            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23'
+            '4520ebaa7ca5233478024e6aa57a6c9a0893967fed4461dff6f43035790a64d9')
 
 prepare() {
   cd ${_srcname}
+  # https://github.com/boostorg/phoenix/issues/111
+  patch -Np1 -i ../boost-1.81.0-phoenix-multiple-definitions.patch
+
   # https://github.com/boostorg/ublas/pull/97
   patch -Np2 -i ../$_pkgname-ublas-c++20-iterator.patch
 
   patch -i ../no-versioned-shlibs.patch
+  patch -i ../disable-version-check.patch
 }
 
 build() {
diff --git a/boost/android-armv7a-eabi/boost-1.81.0-phoenix-multiple-definitions.patch b/boost/android-armv7a-eabi/boost-1.81.0-phoenix-multiple-definitions.patch
new file mode 100644
index 00000000..0aedde6d
--- /dev/null
+++ b/boost/android-armv7a-eabi/boost-1.81.0-phoenix-multiple-definitions.patch
@@ -0,0 +1,11 @@
+https://bugs.gentoo.org/887041
+https://github.com/boostorg/phoenix/issues/111
+--- a/boost/phoenix/stl.hpp
++++ b/boost/phoenix/stl.hpp
+@@ -11,6 +11,5 @@
+ 
+ #include <boost/phoenix/stl/algorithm.hpp>
+ #include <boost/phoenix/stl/container.hpp>
+-#include <boost/phoenix/stl/tuple.hpp>
+ 
+ #endif
diff --git a/boost/android-armv7a-eabi/disable-version-check.patch b/boost/android-armv7a-eabi/disable-version-check.patch
index 3469b005..8774fe12 100644
--- a/boost/android-armv7a-eabi/disable-version-check.patch
+++ b/boost/android-armv7a-eabi/disable-version-check.patch
@@ -1,27 +1,33 @@
---- a/tools/build/src/tools/common.jam	2019-09-18 16:03:02.035995695 +0200
-+++ b/tools/build/src/tools/common.jam	2019-09-18 16:03:36.386156355 +0200
-@@ -974,16 +974,16 @@
+--- tools/build/src/tools/common.jam.orig	2023-02-03 10:57:59.385098144 +0100
++++ tools/build/src/tools/common.jam	2023-02-03 11:00:34.982146918 +0100
+@@ -1127,18 +1127,18 @@
+         import $(toolset) ;
+         local tool-version = [ $(toolset).get-full-version $(command) ] ;
+ 
+-        import version ;
+-        if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
+-                                        : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
+-        {
+-            errors.error toolset $(toolset) "initialization:"
+-                : version '$(version)' requested but
+-                    '$(tool)-$(version)' not found and version
+-                    '$(tool-version:J=.)' of default '$(command)'
+-                    does not match
+-                : initialized from [ errors.nearest-user-location ]
+-                ;
+-        }
++        #import version ;
++        #if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
++        #                                : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
++        #{
++        #    errors.error toolset $(toolset) "initialization:"
++        #        : version '$(version)' requested but
++        #            '$(tool)-$(version)' not found and version
++        #            '$(tool-version:J=.)' of default '$(command)'
++        #            does not match
++        #        : initialized from [ errors.nearest-user-location ]
++        #        ;
++        #}
      }
- 
-     # From GCC 5, versioning changes and minor becomes patch
--    if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # Ditto, from Clang 4
--    if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # On intel, version is not added, because it does not matter and it is the
-     # version of vc used as backend that matters. Ideally, we should encode the
+     #3) default: no command and no version specified, try using "$(tool)"
+     else
diff --git a/boost/android-x86-64/PKGBUILD b/boost/android-x86-64/PKGBUILD
index 45304d47..e55b97a9 100644
--- a/boost/android-x86-64/PKGBUILD
+++ b/boost/android-x86-64/PKGBUILD
@@ -16,7 +16,7 @@ _boost_arch=x86
 _boost_address_model=64
 
 pkgname=android-$_pkg_arch-$_pkgname
-pkgver=1.76.0
+pkgver=1.81.0
 _srcname=boost_${pkgver//./_}
 pkgrel=1
 url='https://www.boost.org/'
@@ -29,18 +29,26 @@ makedepends=('bzip2' 'zlib' 'android-ndk' 'android-sdk')
 conflicts=("android-$_pkgname-$_android_arch")
 replaces=("android-$_pkgname-$_android_arch")
 source=(https://boostorg.jfrog.io/artifactory/main/release/$pkgver/source/$_srcname.tar.gz
+        boost-1.81.0-phoenix-multiple-definitions.patch
         $_pkgname-ublas-c++20-iterator.patch::https://github.com/boostorg/ublas/commit/a31e5cffa85f.patch
-        no-versioned-shlibs.patch)
-sha256sums=('7bd7ddceec1a1dfdcbdb3e609b60d01739c38390a5f956385a12f3122049f0ca'
+        no-versioned-shlibs.patch
+        disable-version-check.patch)
+sha256sums=('71feeed900fbccca04a3b4f2f84a7c217186f28a940ed8b7ed4725986baf99fa'
+            '3ebf428ef6be090a7b56a233330375539ac429333b83708e28fe5db049cfecdb'
             'aa38addb40d5f44b4a8472029b475e7e6aef1c460509eb7d8edf03491dc1b5ee'
-            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23')
+            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23'
+            '4520ebaa7ca5233478024e6aa57a6c9a0893967fed4461dff6f43035790a64d9')
 
 prepare() {
   cd ${_srcname}
+  # https://github.com/boostorg/phoenix/issues/111
+  patch -Np1 -i ../boost-1.81.0-phoenix-multiple-definitions.patch
+
   # https://github.com/boostorg/ublas/pull/97
   patch -Np2 -i ../$_pkgname-ublas-c++20-iterator.patch
 
   patch -i ../no-versioned-shlibs.patch
+  patch -i ../disable-version-check.patch
 }
 
 build() {
diff --git a/boost/android-x86-64/boost-1.81.0-phoenix-multiple-definitions.patch b/boost/android-x86-64/boost-1.81.0-phoenix-multiple-definitions.patch
new file mode 100644
index 00000000..0aedde6d
--- /dev/null
+++ b/boost/android-x86-64/boost-1.81.0-phoenix-multiple-definitions.patch
@@ -0,0 +1,11 @@
+https://bugs.gentoo.org/887041
+https://github.com/boostorg/phoenix/issues/111
+--- a/boost/phoenix/stl.hpp
++++ b/boost/phoenix/stl.hpp
+@@ -11,6 +11,5 @@
+ 
+ #include <boost/phoenix/stl/algorithm.hpp>
+ #include <boost/phoenix/stl/container.hpp>
+-#include <boost/phoenix/stl/tuple.hpp>
+ 
+ #endif
diff --git a/boost/android-x86-64/disable-version-check.patch b/boost/android-x86-64/disable-version-check.patch
index 3469b005..8774fe12 100644
--- a/boost/android-x86-64/disable-version-check.patch
+++ b/boost/android-x86-64/disable-version-check.patch
@@ -1,27 +1,33 @@
---- a/tools/build/src/tools/common.jam	2019-09-18 16:03:02.035995695 +0200
-+++ b/tools/build/src/tools/common.jam	2019-09-18 16:03:36.386156355 +0200
-@@ -974,16 +974,16 @@
+--- tools/build/src/tools/common.jam.orig	2023-02-03 10:57:59.385098144 +0100
++++ tools/build/src/tools/common.jam	2023-02-03 11:00:34.982146918 +0100
+@@ -1127,18 +1127,18 @@
+         import $(toolset) ;
+         local tool-version = [ $(toolset).get-full-version $(command) ] ;
+ 
+-        import version ;
+-        if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
+-                                        : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
+-        {
+-            errors.error toolset $(toolset) "initialization:"
+-                : version '$(version)' requested but
+-                    '$(tool)-$(version)' not found and version
+-                    '$(tool-version:J=.)' of default '$(command)'
+-                    does not match
+-                : initialized from [ errors.nearest-user-location ]
+-                ;
+-        }
++        #import version ;
++        #if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
++        #                                : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
++        #{
++        #    errors.error toolset $(toolset) "initialization:"
++        #        : version '$(version)' requested but
++        #            '$(tool)-$(version)' not found and version
++        #            '$(tool-version:J=.)' of default '$(command)'
++        #            does not match
++        #        : initialized from [ errors.nearest-user-location ]
++        #        ;
++        #}
      }
- 
-     # From GCC 5, versioning changes and minor becomes patch
--    if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # Ditto, from Clang 4
--    if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # On intel, version is not added, because it does not matter and it is the
-     # version of vc used as backend that matters. Ideally, we should encode the
+     #3) default: no command and no version specified, try using "$(tool)"
+     else
diff --git a/boost/android-x86/PKGBUILD b/boost/android-x86/PKGBUILD
index 87229354..47f2e58f 100644
--- a/boost/android-x86/PKGBUILD
+++ b/boost/android-x86/PKGBUILD
@@ -16,7 +16,7 @@ _boost_arch=x86
 _boost_address_model=32
 
 pkgname=android-$_pkg_arch-$_pkgname
-pkgver=1.76.0
+pkgver=1.81.0
 _srcname=boost_${pkgver//./_}
 pkgrel=1
 url='https://www.boost.org/'
@@ -29,18 +29,26 @@ makedepends=('bzip2' 'zlib' 'android-ndk' 'android-sdk')
 conflicts=("android-$_pkgname-$_android_arch")
 replaces=("android-$_pkgname-$_android_arch")
 source=(https://boostorg.jfrog.io/artifactory/main/release/$pkgver/source/$_srcname.tar.gz
+        boost-1.81.0-phoenix-multiple-definitions.patch
         $_pkgname-ublas-c++20-iterator.patch::https://github.com/boostorg/ublas/commit/a31e5cffa85f.patch
-        no-versioned-shlibs.patch)
-sha256sums=('7bd7ddceec1a1dfdcbdb3e609b60d01739c38390a5f956385a12f3122049f0ca'
+        no-versioned-shlibs.patch
+        disable-version-check.patch)
+sha256sums=('71feeed900fbccca04a3b4f2f84a7c217186f28a940ed8b7ed4725986baf99fa'
+            '3ebf428ef6be090a7b56a233330375539ac429333b83708e28fe5db049cfecdb'
             'aa38addb40d5f44b4a8472029b475e7e6aef1c460509eb7d8edf03491dc1b5ee'
-            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23')
+            'd82d0f15064812dcabb3456a7bcb1db0e0f6145980e4728e638372e0fd35af23'
+            '4520ebaa7ca5233478024e6aa57a6c9a0893967fed4461dff6f43035790a64d9')
 
 prepare() {
   cd ${_srcname}
+  # https://github.com/boostorg/phoenix/issues/111
+  patch -Np1 -i ../boost-1.81.0-phoenix-multiple-definitions.patch
+
   # https://github.com/boostorg/ublas/pull/97
   patch -Np2 -i ../$_pkgname-ublas-c++20-iterator.patch
 
   patch -i ../no-versioned-shlibs.patch
+  patch -i ../disable-version-check.patch
 }
 
 build() {
diff --git a/boost/android-x86/boost-1.81.0-phoenix-multiple-definitions.patch b/boost/android-x86/boost-1.81.0-phoenix-multiple-definitions.patch
new file mode 100644
index 00000000..0aedde6d
--- /dev/null
+++ b/boost/android-x86/boost-1.81.0-phoenix-multiple-definitions.patch
@@ -0,0 +1,11 @@
+https://bugs.gentoo.org/887041
+https://github.com/boostorg/phoenix/issues/111
+--- a/boost/phoenix/stl.hpp
++++ b/boost/phoenix/stl.hpp
+@@ -11,6 +11,5 @@
+ 
+ #include <boost/phoenix/stl/algorithm.hpp>
+ #include <boost/phoenix/stl/container.hpp>
+-#include <boost/phoenix/stl/tuple.hpp>
+ 
+ #endif
diff --git a/boost/android-x86/disable-version-check.patch b/boost/android-x86/disable-version-check.patch
index 3469b005..8774fe12 100644
--- a/boost/android-x86/disable-version-check.patch
+++ b/boost/android-x86/disable-version-check.patch
@@ -1,27 +1,33 @@
---- a/tools/build/src/tools/common.jam	2019-09-18 16:03:02.035995695 +0200
-+++ b/tools/build/src/tools/common.jam	2019-09-18 16:03:36.386156355 +0200
-@@ -974,16 +974,16 @@
+--- tools/build/src/tools/common.jam.orig	2023-02-03 10:57:59.385098144 +0100
++++ tools/build/src/tools/common.jam	2023-02-03 11:00:34.982146918 +0100
+@@ -1127,18 +1127,18 @@
+         import $(toolset) ;
+         local tool-version = [ $(toolset).get-full-version $(command) ] ;
+ 
+-        import version ;
+-        if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
+-                                        : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
+-        {
+-            errors.error toolset $(toolset) "initialization:"
+-                : version '$(version)' requested but
+-                    '$(tool)-$(version)' not found and version
+-                    '$(tool-version:J=.)' of default '$(command)'
+-                    does not match
+-                : initialized from [ errors.nearest-user-location ]
+-                ;
+-        }
++        #import version ;
++        #if ! [ version.version-compatible [ SPLIT_BY_CHARACTERS $(version) : . ]
++        #                                : [ SPLIT_BY_CHARACTERS $(tool-version) : . ] ]
++        #{
++        #    errors.error toolset $(toolset) "initialization:"
++        #        : version '$(version)' requested but
++        #            '$(tool)-$(version)' not found and version
++        #            '$(tool-version:J=.)' of default '$(command)'
++        #            does not match
++        #        : initialized from [ errors.nearest-user-location ]
++        #        ;
++        #}
      }
- 
-     # From GCC 5, versioning changes and minor becomes patch
--    if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # Ditto, from Clang 4
--    if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
--    {
--        version = $(version[1]) ;
--    }
-+    #if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
-+    #{
-+    #    version = $(version[1]) ;
-+    #}
- 
-     # On intel, version is not added, because it does not matter and it is the
-     # version of vc used as backend that matters. Ideally, we should encode the
+     #3) default: no command and no version specified, try using "$(tool)"
+     else
diff --git a/boost/doc/PKGBUILD b/boost/doc/PKGBUILD
index 001b446d..7900edfc 100644
--- a/boost/doc/PKGBUILD
+++ b/boost/doc/PKGBUILD
@@ -1,6 +1,6 @@
 _pkgbase=boost
 pkgname=boost-doc
-pkgver=1.80.0
+pkgver=1.81.0
 _srcname=boost_${pkgver//./_}
 pkgrel=1
 pkgdesc='Free peer-reviewed portable C++ source libraries (HTML documentation)'
@@ -9,7 +9,7 @@ arch=('x86_64')
 license=('custom')
 makedepends=()
 source=(https://boostorg.jfrog.io/artifactory/main/release/$pkgver/source/$_srcname.tar.bz2)
-sha256sums=('1e19565d82e43bc59209a168f5ac899d3ba471d55c7610c677d4ccf2c9c500c0')
+sha256sums=('71feeed900fbccca04a3b4f2f84a7c217186f28a940ed8b7ed4725986baf99fa')
 options=(!strip)
 
 package() {
diff --git a/boost/static-compat/PKGBUILD b/boost/static-compat/PKGBUILD
index e365d517..d5a90e73 100644
--- a/boost/static-compat/PKGBUILD
+++ b/boost/static-compat/PKGBUILD
@@ -11,7 +11,7 @@
 
 _pkgname=boost
 pkgname=static-compat-$_pkgname
-pkgver=1.80.0
+pkgver=1.81.0
 pkgrel=1
 _srcname=boost_${pkgver//./_}
 pkgdesc="Free peer-reviewed portable C++ source libraries"
@@ -22,13 +22,18 @@ options=('staticlibs')
 depends=('static-compat-zlib' 'static-compat-zstd' 'static-compat-bzip2')
 makedepends=('static-compat-environment')
 source=(https://boostorg.jfrog.io/artifactory/main/release/$pkgver/source/$_srcname.tar.bz2
+        boost-1.81.0-phoenix-multiple-definitions.patch
         $_pkgname-ublas-c++20-iterator.patch::https://github.com/boostorg/ublas/commit/a31e5cffa85f.patch)
-sha256sums=('1e19565d82e43bc59209a168f5ac899d3ba471d55c7610c677d4ccf2c9c500c0'
+sha256sums=('71feeed900fbccca04a3b4f2f84a7c217186f28a940ed8b7ed4725986baf99fa'
+            '3ebf428ef6be090a7b56a233330375539ac429333b83708e28fe5db049cfecdb'
             'aa38addb40d5f44b4a8472029b475e7e6aef1c460509eb7d8edf03491dc1b5ee')
 
 prepare() {
   cd $_srcname
 
+  # https://github.com/boostorg/phoenix/issues/111
+  patch -Np1 -i ../boost-1.81.0-phoenix-multiple-definitions.patch
+
   # https://github.com/boostorg/ublas/pull/97
   patch -Np2 -i ../$_pkgname-ublas-c++20-iterator.patch
 }
diff --git a/boost/static-compat/boost-1.81.0-phoenix-multiple-definitions.patch b/boost/static-compat/boost-1.81.0-phoenix-multiple-definitions.patch
new file mode 120000
index 00000000..6fbc062d
--- /dev/null
+++ b/boost/static-compat/boost-1.81.0-phoenix-multiple-definitions.patch
@@ -0,0 +1 @@
+../android-aarch64/boost-1.81.0-phoenix-multiple-definitions.patch
\ No newline at end of file