From 531b5cfda3b6cfd5964ad80a3f253d77500911ad Mon Sep 17 00:00:00 2001
From: U2FsdGVkX1 <U2FsdGVkX1@gmail.com>
Date: Thu, 6 Jun 2024 19:04:31 +0800
Subject: [PATCH] Backport patch to fix RISC-V functions missing

---
 ...-ABI-detection-for-empty-os-platform.patch | 37 +++++++++++++++++++
 boost.spec                                    |  8 +++-
 2 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 boost-1.83-Fix-ABI-detection-for-empty-os-platform.patch

diff --git a/boost-1.83-Fix-ABI-detection-for-empty-os-platform.patch b/boost-1.83-Fix-ABI-detection-for-empty-os-platform.patch
new file mode 100644
index 0000000..c450275
--- /dev/null
+++ b/boost-1.83-Fix-ABI-detection-for-empty-os-platform.patch
@@ -0,0 +1,37 @@
+From 819c2d6423b4e0f55c5f69e334bf81570e82f68f Mon Sep 17 00:00:00 2001
+From: "Ivan A. Melnikov" <iv@altlinux.org>
+Date: Thu, 17 Aug 2023 14:15:03 +0400
+Subject: [PATCH] Fix ABI detection for empty 'os.platform'
+
+`in` operator in bjam always returns true if its first
+argument has no elements[1]. This means that if `os.platform`
+is empty (not detected), the construction introduced
+in commit d039c8e4da79dbc76481236249e22892bfdde047 sets
+ABI to `aapcs` on all platforms where `os.platform` is
+empty, including, e.g. riscv64, and breaks build there.
+
+This commit refactors the condition to use '=' operator,
+to make sure that when `os.platform` is empty we get
+the default ABI value, and thus fixes build on riscv64.
+
+[1] https://www.boost.org/doc/libs/1_83_0/tools/build/doc/html/index.html#jam.language.flow_of_control
+
+Fixes: d039c8e4da79dbc76481236249e22892bfdde047
+---
+ build/Jamfile.v2 | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/build/Jamfile.v2 b/build/Jamfile.v2
+index faaf892c..c07847ab 100644
+--- a/libs/context/build/Jamfile.v2
++++ b/libs/context/build/Jamfile.v2
+@@ -79,7 +79,8 @@ local rule default_abi ( )
+     local tmp = sysv ;
+     if [ os.name ] = "NT" { tmp = ms ; }
+     else if [ os.name ] = "CYGWIN" { tmp = ms ; }
+-    else if [ os.platform ] in ARM ARM64 { tmp = aapcs ; }
++    else if [ os.platform ] = "ARM" { tmp = aapcs ; }
++    else if [ os.platform ] = "ARM64" { tmp = aapcs ; }
+     else if [ os.platform ] = "MIPS32" { tmp = o32 ; }
+     else if [ os.platform ] = "MIPS64" { tmp = n64 ; }
+     return $(tmp) ;
diff --git a/boost.spec b/boost.spec
index 377b484..109e42d 100644
--- a/boost.spec
+++ b/boost.spec
@@ -46,7 +46,7 @@ Name: boost
 %global real_name boost
 Summary: The free peer-reviewed portable C++ source libraries
 Version: 1.83.0
-Release: 5%{?dist}
+Release: 6%{?dist}
 License: BSL-1.0 AND MIT AND Python-2.0.1
 
 # Replace each . with _ in %%{version}
@@ -169,6 +169,9 @@ Patch9: boost-1.83-multiprecision-convert-noexcept.patch
 # https://github.com/boostorg/math/issues/1132
 Patch10: boost-1.83-math-Correct-float_next-INF-and-float_prior-INF.patch
 
+# https://github.com/boostorg/context/pull/234
+Patch11: boost-1.83-Fix-ABI-detection-for-empty-os-platform.patch
+
 %bcond_with tests
 %bcond_with docs_generated
 
@@ -1298,6 +1301,9 @@ fi
 %{_mandir}/man1/b2.1*
 
 %changelog
+* Sun Jun 02 2024 Songsong Zhang <U2FsdGVkX1@gmail.com> - 1.83.0-6
+- Backport patch to fix RISC-V functions missing
+
 * Sat May 25 2024 Kefu Chai <tchaikov@fedoraproject.org> - 1.83.0-5
 - Add patch to fix Boost.Math bug where float_next(+INF) and float_prior(-INF)
   returns NaN, but they should return +INF and -INF respectively.