pdf-tools: modernize autotools deps

1 files changed, 5 insertions, 7 deletions

diff --git a/Library/Formula/pdf-tools.rb b/Library/Formula/pdf-tools.rb
index 53021b6e0..db3bc2aa5 100644
--- a/Library/Formula/pdf-tools.rb
+++ b/Library/Formula/pdf-tools.rb
@@ -12,17 +12,15 @@ class PdfTools < Formula
   end
 
   depends_on "pkg-config" => :build
-
-  depends_on :autoconf
-  depends_on :automake
-  depends_on :libtool
-
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+  depends_on "libtool" => :build
   depends_on "cairo"
   depends_on "poppler"
 
   def install
-    ENV['zlib_CFLAGS'] = '-I/usr/include'
-    ENV['zlib_LIBS'] = '-L/usr/lib -lz'
+    ENV["zlib_CFLAGS"] = "-I/usr/include"
+    ENV["zlib_LIBS"] = "-L/usr/lib -lz"
 
     system "./autogen.sh"
     system "./configure", "--prefix=#{prefix}"