bz2 fix absolute symlinks (#4365)

* for some reason these symlinks are created absolute, fix that
* restore the makefile to make the dylib on darwin
  * it was failing due to bzip2 being a dep for brewkit

projects/sourceware.org/bzip2/Makefile-libbz2_dylib

@@ -0,0 +1,44 @@
+# This Makefile builds a shared version of the library,
+# libbz2.dylib for MacOSX x86 (10.13.4 or higher),
+# It is a custom Makefile. Use at own risk.
+# Run in your MacOS terminal with the following command:
+# make -f Makefile-libbz2_dylib
+
+PKG_VERSION?=1.0.8
+PREFIX?=/usr/local
+
+# SHELL=/bin/sh
+# CC=gcc
+BIGFILES=-D_FILE_OFFSET_BITS=64
+CFLAGS=-fpic -fPIC -Wall -Winline -O2 -g $(BIGFILES)
+
+OBJS= blocksort.o  \
+	  huffman.o    \
+	  crctable.o   \
+	  randtable.o  \
+	  compress.o   \
+	  decompress.o \
+	  bzlib.o
+
+all: $(OBJS)
+	$(CC) -shared -Wl,-install_name -Wl,libbz2.dylib -o libbz2.${PKG_VERSION}.dylib $(OBJS)
+	cp libbz2.${PKG_VERSION}.dylib ${PREFIX}/lib/
+	ln -s libbz2.${PKG_VERSION}.dylib ${PREFIX}/lib/libbz2.dylib
+
+clean:
+	rm -f libbz2.dylib libbz2.${PKG_VERSION}.dylib
+
+blocksort.o: blocksort.c
+	$(CC) $(CFLAGS) -c blocksort.c
+huffman.o: huffman.c
+	$(CC) $(CFLAGS) -c huffman.c
+crctable.o: crctable.c
+	$(CC) $(CFLAGS) -c crctable.c
+randtable.o: randtable.c
+	$(CC) $(CFLAGS) -c randtable.c
+compress.o: compress.c
+	$(CC) $(CFLAGS) -c compress.c
+decompress.o: decompress.c
+	$(CC) $(CFLAGS) -c decompress.c
+bzlib.o: bzlib.c
+	$(CC) $(CFLAGS) -c bzlib.c

projects/sourceware.org/bzip2/package.yml

@@ -9,21 +9,34 @@ versions:
 provides:
   - bin/bunzip2
   - bin/bzcat
+  - bin/bzcmp
   - bin/bzdiff
   - bin/bzgrep
+  - bin/bzegrep
+  - bin/bzfgrep
   - bin/bzip2
   - bin/bzip2recover
   - bin/bzmore
+  - bin/bzless
 
 build:
-  script: |
-    make \
-      --environment-overrides \
-      --jobs {{ hw.concurrency }} \
-      install
+  script:
+    - make --environment-overrides
+    - make --environment-overrides install
 
-    case {{ hw.platform }} in
-    linux)
+    # fix absolute symlinks
+    - run: |
+        for x in *; do
+          if [ -L $x ]; then
+            y="$(readlink $x)"
+            rm $x
+            ln -s $(basename "$y") $x
+          fi
+        done
+      working-directory: '{{prefix}}/bin'
+
+    - if: linux
+      run: |
         make \
           --file Makefile-libbz2_so \
           --environment-overrides \
@@ -33,24 +46,39 @@ build:
         cd {{ prefix }}/lib
         test -e libbz2.so || ln -s libbz2.so.{{ version }} libbz2.so
         test -e libbz2.so.{{ version.major }} || ln -s libbz2.so.{{ version }} libbz2.so.{{ version.major }}
-      ;;
-    darwin)
+
+    - if: darwin
+      run: |
+        # necessary until brewkit v1
+        if [ -n "$(ls {{ prefix }}/lib/*.dylib)" ]; then
+          rm {{ prefix }}/lib/*.dylib
+        fi
+
+        make \
+          --file props/Makefile-libbz2_dylib \
+          --environment-overrides \
+          --jobs {{ hw.concurrency }}
+
         cd {{ prefix }}/lib
         test -e libbz2.dylib
         test -e libbz2.{{version}}.dylib
-      test -e libbz2.{{version.major}}.dylib
-      ;;
-    esac
+        ln -s libbz2.{{version}}.dylib libbz2.{{version.major}}.dylib
 
   env:
-    CFLAGS: -fPIC # so deps link without relocation issues on linux/aarch64
     PREFIX: ${{ prefix }}
     darwin:
       PKG_VERSION: ${{ version }}
 
 test:
-  script: |
+  script:
+    - |
       OUT=$(echo "$INPUT" | bzip2 | bunzip2)
       test "$OUT" = "$INPUT"
+    # test symlinks are functional
+    # sadly bzegrep has no `--help`
+    - |
+      echo "$INPUT" > file
+      bzip2 file
+      bzegrep test-string file.bz2
   env:
-    INPUT: tea.xyz
+    INPUT: tea.xyz.test-string