new package: libucontext

packages/libucontext/Makefile.patch

@@ -0,0 +1,15 @@
+--- a/Makefile
++++ b/Makefile
+@@ -15,9 +15,9 @@
+ endif
+ 
+ LIBDIR := /lib
+-INCLUDEDIR := /usr/include
+-PKGCONFIGDIR := /usr/lib/pkgconfig
+-CFLAGS := -ggdb3 -O2 -Wall
++INCLUDEDIR := /include
++PKGCONFIGDIR := /lib/pkgconfig
++CFLAGS ?= -ggdb3 -O2 -Wall
+ CPPFLAGS := -Iinclude -Iarch/${ARCH} -Iarch/common
+ EXPORT_UNPREFIXED := yes
+ FREESTANDING := no

packages/libucontext/bits.h.patch

@@ -0,0 +1,53 @@
+--- a/arch/common/include/libucontext/bits.h
++++ b/arch/common/include/libucontext/bits.h
+@@ -3,6 +3,50 @@
+ 
+ #ifndef FREESTANDING
+ 
++#ifdef __ANDROID__
++
++#if defined __i386__
++# undef REG_GS
++# undef REG_FS
++# undef REG_ES
++# undef REG_DS
++# undef REG_EDI
++# undef REG_ESI
++# undef REG_EBP
++# undef REG_ESP
++# undef REG_EBX
++# undef REG_EDX
++# undef REG_ECX
++# undef REG_EAX
++# undef REG_EIP
++#elif defined __x86_64__
++# undef REG_R8
++# undef REG_R9
++# undef REG_R10
++# undef REG_R11
++# undef REG_R12
++# undef REG_R13
++# undef REG_R14
++# undef REG_R15
++# undef REG_RDI
++# undef REG_RSI
++# undef REG_RBP
++# undef REG_RBX
++# undef REG_RDX
++# undef REG_RAX
++# undef REG_RCX
++# undef REG_RSP
++# undef REG_RIP
++# undef REG_EFL
++# undef REG_CSGSFS
++# undef REG_ERR
++# undef REG_TRAPNO
++# undef REG_OLDMASK
++# undef REG_CR2
++#endif
++
++#endif /* __ANDROID__ */
++
+ #include <ucontext.h>
+ 
+ typedef greg_t libucontext_greg_t;

packages/libucontext/build.sh

@@ -0,0 +1,17 @@
+TERMUX_PKG_HOMEPAGE=https://github.com/kaniini/libucontext
+TERMUX_PKG_DESCRIPTION="A library which provides the ucontext.h C API"
+TERMUX_PKG_LICENSE="ISC"
+TERMUX_PKG_MAINTAINER="@termux"
+TERMUX_PKG_VERSION=1.1
+TERMUX_PKG_SRCURL=https://github.com/kaniini/libucontext/archive/refs/tags/libucontext-${TERMUX_PKG_VERSION}.tar.gz
+TERMUX_PKG_SHA256=298201cef024aee29dfb81c3f1ef800047d5c799297651a60e2c53bb76956ea6
+TERMUX_PKG_BUILD_IN_SRC=true
+TERMUX_PKG_EXTRA_MAKE_ARGS="DESTDIR=$TERMUX_PREFIX"
+
+termux_step_pre_configure() {
+	TERMUX_PKG_EXTRA_MAKE_ARGS+=" ARCH=$TERMUX_ARCH"
+}
+
+termux_step_configure() {
+	:
+}