termcap: add package (#5015)

* termcap: add package

* patch headers

* add missing patch

* fix check_cincludes

packages/t/termcap/patches/1.3.1/unistd_h.patch

@@ -0,0 +1,15 @@
+diff --git a/tparam.c b/tparam.c
+index 5a9809a..09ef456 100644
+--- a/tparam.c
++++ b/tparam.c
+@@ -40,6 +40,10 @@ char *realloc ();
+ 
+ #endif /* not emacs */
+ 
++#ifdef HAVE_UNISTD_H
++#include <unistd.h>
++#endif
++
+ #ifndef NULL
+ #define NULL (char *) 0
+ #endif

packages/t/termcap/xmake.lua

@@ -0,0 +1,33 @@
+package("termcap")
+    set_homepage("https://www.gnu.org/software/termcap")
+    set_description("Enables programs to use display terminals in a terminal-independent manner")
+    set_license("GPL-2.0-or-later")
+
+    add_urls("https://ftp.gnu.org/gnu/termcap/termcap-$(version).tar.gz",
+             "https://github.com/marcv81/termcap.git")
+
+    add_versions("1.3.1", "91a0e22e5387ca4467b5bcb18edf1c51b930262fd466d5fda396dd9d26719100")
+
+    add_patches("1.3.1", "patches/1.3.1/unistd_h.patch", "9a61b94c22d913ac4f5adf3e5735c07cb5e57eaa057f737bacb754215897cce0")
+
+    on_install(function (package)
+        io.writefile("xmake.lua", [[
+            add_rules("mode.debug", "mode.release")
+            includes("@builtin/check")
+            check_cincludes("HAVE_FCNTL_H", "fcntl.h")
+            check_cincludes("HAVE_UNISTD_H", "unistd.h")
+            target("termcap")
+                set_kind("$(kind)")
+                add_files("*.c")
+                add_headerfiles("*.h")
+                add_defines("STDC_HEADERS")
+                if is_plat("windows") and is_kind("shared") then
+                    add_rules("utils.symbols.export_all")
+                end
+        ]])
+        import("package.tools.xmake").install(package)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("tgetent", {includes = "termcap.h"}))
+    end)