Clean up the test code to check if poppler is properly installed

Create an explicit test file which can be compiled by c++. This commit
should have been part of d435a40 and extends the change made there.

2 files changed, 8 insertions, 3 deletions

diff --git a/server/autobuild b/server/autobuild
index 89a4ccd..f09790d 100755
--- a/server/autobuild
+++ b/server/autobuild
@@ -167,9 +167,7 @@ have_packages_installed()
         which make || return 1
         which gcc || which cc || return 1
         which g++ || which c++ || return 1
-        c++ $(pkg-config --cflags poppler) -o /dev/null -E - 2>/dev/null <<EOF
-        #include <PDFDocEncoding.h>
-EOF
+        c++ $(pkg-config --cflags poppler) -o /dev/null -E install_test.cpp 2>/dev/null
         [ $? -eq 0 ] || return 1
         return 0
     } >/dev/null 2>&1
diff --git a/server/install_test.cpp b/server/install_test.cpp
new file mode 100644
index 0000000..d553d2b
--- /dev/null
+++ b/server/install_test.cpp
@@ -0,0 +1,7 @@
+#include <PDFDocEncoding.h>
+#include <iostream>
+
+int main() {
+        std::cout << "Hello World, pdf-tools!";
+        return 0;
+}