github.com/OSGeo/libgeotiff

projects/github.com/OSGeo/libgeotiff/package.yml

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+distributable:
+  url: https://github.com/OSGeo/libgeotiff/releases/download/{{version}}/libgeotiff-{{version}}.tar.gz
+  strip-components: 1
+
+versions:
+  github: OSGeo/libgeotiff
+
+dependencies:
+  libjpeg-turbo.org: '*'
+  simplesystems.org/libtiff: '*'
+  proj.org: '*'
+
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+
+  script:
+    - ./configure $ARGS
+    - make --jobs {{ hw.concurrency }}
+    - make --jobs {{ hw.concurrency }} install
+   
+  env:
+    ARGS:
+      - --prefix="{{prefix}}"
+      - --with-jpeg
+      - --disable-debug
+      - --disable-dependency-tracking
+      - --disable-silent-rules
+
+provides:
+  - bin/applygeo
+  - bin/geotifcp
+  - bin/listgeo
+
+test:
+  dependencies:
+    tea.xyz/gx/cc: c99
+  script:
+    - cc test.c -ltiff -lgeotiff -o test
+    - ./test test.tiff
+    - listgeo test.tiff | grep GeogInvFlatteningGeoKey

projects/github.com/OSGeo/libgeotiff/test.c

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+#include "geotiffio.h"
+#include "xtiffio.h"
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char* argv[]) {
+    TIFF *tif = XTIFFOpen(argv[1], "w");
+    GTIF *gtif = GTIFNew(tif);
+    TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (uint32_t) 10);
+    GTIFKeySet(gtif, GeogInvFlatteningGeoKey, TYPE_DOUBLE, 1, (double)123.456);
+
+    int i;
+    char buffer[20L];
+
+    memset(buffer,0,(size_t)20L);
+    for (i=0;i<20L;i++){
+        TIFFWriteScanline(tif, buffer, i, 0);
+    }
+
+    GTIFWriteKeys(gtif);
+    GTIFFree(gtif);
+    XTIFFClose(tif);
+    return 0;
+}