Unbundle zopfli

- We now have libzopfli/zopfli-devel in EPEL9

advancecomp.spec

@@ -39,13 +39,7 @@ BuildRequires:  zlib-devel
 
 # Unbundled downstream
 BuildRequires:  pkgconfig(libdeflate)
-
-# No libzopfli/zopfli-devel in EPEL9.
-#
-# Version number based on HISTORY, which mentions that upstream commit
-# 6818a0859063b946094fb6f94732836404a0d89a was used from
-# https://github.com/google/zopfli/.
-Provides:       bundled(zopfli) = 1.0.2^20160527git6818a08
+BuildRequires:  zopfli-devel
 
 # From 7z/README:
 #
@@ -95,6 +89,19 @@ find . -type f -exec gawk \
     '{}' '+' |
   xargs -r -t sed -r -i 's@^([[:blank:]]*#include.*)libdeflate/@\1@'
 
+# Patch out bundled zopfli
+rm -rv zopfli
+sed -r -i \
+    -e '/zopfli[\/_]/d' \
+    -e 's/((\(7z_SOURCES\)|WindowOut\.h).*)[[:blank:]]*\\/\1/' \
+    Makefile.am
+# Fix up #include paths. The find-then-modify pattern keeps us from discarding
+# mtimes on any sources that do not need modification.
+find . -type f -exec gawk \
+    '/^[[:blank:]]*#include.*zopfli/ { print FILENAME; nextfile }' \
+    '{}' '+' |
+  xargs -r -t sed -r -i -e 's@^([[:blank:]]*#include.*)zopfli/@\1@'
+
 
 %build
 %set_build_flags
@@ -105,6 +112,9 @@ export CFLAGS="$(pkgconf --cflags libdeflate) ${CFLAGS-}"
 export CXXFLAGS="$(pkgconf --cflags libdeflate) ${CXXFLAGS-}"
 export LDFLAGS="$(pkgconf --libs libdeflate) ${LDFLAGS-}"
 
+# Link against system zopfli
+export LDFLAGS="-lzopfli ${LDFLAGS-}"
+
 %configure
 %make_build