elfutils package: fix +debuginfod installation issue (#36758)

* elfutils cannot build against libarchive@3.62+iconv 
* elfutils needs libmicrohttpd version 0.9.50 or older
* elfutils: explicitly depend on pkg-config
* libmicrohttpd: Add several new versions

var/spack/repos/builtin/packages/elfutils/package.py

@@ -73,10 +73,11 @@ class Elfutils(AutotoolsPackage, SourcewarePackage):
     depends_on("zlib", type="link")
     depends_on("gettext", when="+nls")
     depends_on("m4", type="build")
+    depends_on("pkgconfig@0.9.0:", type=("build", "link"))
 
     # debuginfod has extra dependencies
-    # NB: Waiting on an elfutils patch before we can use libmicrohttpd@0.9.71
-    depends_on("libmicrohttpd@0.9.33:0.9.70", type="link", when="+debuginfod")
+    # NB: Waiting on an elfutils patch before we can use libmicrohttpd@0.9.51
+    depends_on("libmicrohttpd@0.9.33:0.9.50", type="link", when="+debuginfod")
     depends_on("libarchive@3.1.2:", type="link", when="+debuginfod")
     depends_on("sqlite@3.7.17:", type="link", when="+debuginfod")
     depends_on("curl@7.29.0:", type="link", when="+debuginfod")
@@ -85,6 +86,11 @@ class Elfutils(AutotoolsPackage, SourcewarePackage):
 
     provides("elf@1")
 
+    # libarchive with iconv doesn't configure.
+    # see https://github.com/spack/spack/issues/36710
+    # and https://github.com/libarchive/libarchive/issues/1819
+    conflicts("^libarchive@3.6.2 +iconv", when="+debuginfod")
+
     # Elfutils uses nested functions in C code, which is implemented
     # in gcc, but not in clang. C code compiled with gcc is
     # binary-compatible with clang, so it should be possible to build

var/spack/repos/builtin/packages/libmicrohttpd/package.py

@@ -16,8 +16,14 @@ class Libmicrohttpd(AutotoolsPackage):
 
     maintainers("hainest")
 
+    version("0.9.76", sha256="f0b1547b5a42a6c0f724e8e1c1cb5ce9c4c35fb495e7d780b9930d35011ceb4c")
+    version("0.9.75", sha256="9278907a6f571b391aab9644fd646a5108ed97311ec66f6359cebbedb0a4e3bb")
+    version("0.9.74", sha256="42035d0261373324bfb434018f4ab892514b10253d1af232e41b4cc2c11e650b")
+    version("0.9.73", sha256="a37b2f1b88fd1bfe74109586be463a434d34e773530fc2a74364cfcf734c032e")
+    version("0.9.72", sha256="0ae825f8e0d7f41201fd44a0df1cf454c1cb0bc50fe9d59c26552260264c2ff8")
     version("0.9.71", sha256="e8f445e85faf727b89e9f9590daea4473ae00ead38b237cf1eda55172b89b182")
     version("0.9.70", sha256="90d0a3d396f96f9bc41eb0f7e8187796049285fabef82604acd4879590977307")
+    version("0.9.50", sha256="d1b6385068abded29b6470e383287aa7705de05ae3c08ad0bf5747ac4dc6ebd7")
 
     variant("https", default=False, description="HTTPS support with GnuTLS")