+libiconv (#782)

* +libiconv

* fix linux test

projects/gnu.org/libiconv/package.yml

@@ -0,0 +1,32 @@
+distributable:
+  url: https://ftp.gnu.org/gnu/libiconv/libiconv-{{version.marketing}}.tar.gz
+  strip-components: 1
+
+versions:
+  - 1.17.0 # fix
+
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+  script: |
+    ./configure $ARGS
+    make --jobs {{ hw.concurrency }} 
+    make install
+  env:
+    ARGS:
+      - --prefix="{{prefix}}"
+      - --disable-debug
+      - --disable-dependency-tracking
+      - --enable-extra-encodings
+      - --enable-static
+
+provides:
+  - bin/iconv
+
+test:
+  dependencies:
+    tea.xyz/gx/cc: c99
+  script: |
+    g++ -std=c++11 test.cc -liconv
+    ./a.out

projects/gnu.org/libiconv/test.cc

@@ -0,0 +1,22 @@
+#include <iostream>
+#include <fstream>
+#include <iconv.h>
+ 
+int main(int argc, char *argv[])
+{
+    char src[] = "abcčde";
+    char dst[100];
+    size_t srclen = 6;
+    size_t dstlen = 12;
+ 
+    fprintf(stderr,"in: %s\n",src);
+ 
+    char * pIn = src;
+    char * pOut = ( char*)dst;
+ 
+    iconv_t conv = iconv_open("UTF-8","CP1250");
+    iconv(conv, &pIn, &srclen, &pOut, &dstlen);
+    iconv_close(conv);
+ 
+    fprintf(stderr,"out: %s\n",dst);
+}