add SHLIBPREFIX

build_tests/shared_library/Rsconsfile

@@ -1,6 +1,6 @@
 Rscons::Environment.new do |env|
   env["CPPPATH"] << "src/lib"
-  libmine = env.SharedLibrary("libmine", Dir["src/lib/*.c"])
+  libmine = env.SharedLibrary("mine", Dir["src/lib/*.c"])
   env.Program("test-shared.exe",
               Dir["src/*.c"],
               "LIBPATH" => %w[.],

build_tests/shared_library/shared_library_cxx.rb

@@ -1,6 +1,6 @@
 Rscons::Environment.new do |env|
   env["CPPPATH"] << "src/lib"
-  libmine = env.SharedLibrary("libmine", Dir["src/lib/*.cc"])
+  libmine = env.SharedLibrary("mine", Dir["src/lib/*.cc"])
   env.Program("test-shared.exe",
               Dir["src/*.cc"],
               "LIBPATH" => %w[.],

build_tests/shared_library/shared_library_d.rb

@@ -1,6 +1,6 @@
 Rscons::Environment.new do |env|
   env["CPPPATH"] << "src/lib"
-  libmine = env.SharedLibrary("libmine", Dir["src/lib/*.d"])
+  libmine = env.SharedLibrary("mine", Dir["src/lib/*.d"])
   env.Program("test-shared.exe",
               Dir["src/*.c"],
               "LIBPATH" => %w[.],

build_tests/shared_library/shared_library_set_shld.rb

@@ -1,7 +1,7 @@
 Rscons::Environment.new do |env|
   env["CPPPATH"] << "src/lib"
   env["SHLD"] = "gcc"
-  libmine = env.SharedLibrary("libmine", Dir["src/lib/*.c"])
+  libmine = env.SharedLibrary("mine", Dir["src/lib/*.c"])
   env.Program("test-shared.exe",
               Dir["src/*.c"],
               "LIBPATH" => %w[.],

lib/rscons/builders/program.rb

@@ -41,7 +41,7 @@ module Rscons
       def create_build_target(options)
         env, target, vars = options.values_at(:env, :target, :vars)
         my_options = options.dup
-        unless target["."]
+        unless File.basename(target)["."]
           my_options[:target] += env.expand_varref("${PROGSUFFIX}", vars)
         end
         super(my_options)

lib/rscons/builders/shared_library.rb

@@ -11,6 +11,7 @@ module Rscons
       # @return [Hash] Default construction variables for the builder.
       def default_variables(env)
         {
+          'SHLIBPREFIX' => (RUBY_PLATFORM =~ /mingw/ ? '' : 'lib'),
           'SHLIBSUFFIX' => (RUBY_PLATFORM =~ /mingw/ ? '.dll' : '.so'),
           'SHLDFLAGS' => ['${LDFLAGS}', '-shared'],
           'SHLD' => nil,
@@ -38,7 +39,11 @@ module Rscons
       def create_build_target(options)
         env, target, vars = options.values_at(:env, :target, :vars)
         my_options = options.dup
-        unless env.expand_varref(target, vars) =~ /\./
+        libprefix = env.expand_varref("${SHLIBPREFIX}", vars)
+        unless File.basename(target).start_with?(libprefix)
+          my_options[:target].sub!(%r{^(.*/)?([^/]+)$}, "\\1#{libprefix}\\2")
+        end
+        unless File.basename(target)["."]
           my_options[:target] += env.expand_varref("${SHLIBSUFFIX}", vars)
         end
         super(my_options)

spec/build_tests_spec.rb

@@ -446,7 +446,11 @@ EOF
       # point anyway...
       #expect(result.stderr).to eq ""
       slines = lines(result.stdout)
-      expect(slines).to include("SHLD libmine.so")
+      if RUBY_PLATFORM =~ /mingw/
+        expect(slines).to include("SHLD mine.dll")
+      else
+        expect(slines).to include("SHLD libmine.so")
+      end
     end
   end
 
@@ -690,13 +694,20 @@ EOF
     result = run_test
     expect(result.stderr).to eq ""
     slines = lines(result.stdout)
-    expect(slines).to include("SHLD libmine.so")
+    if RUBY_PLATFORM =~ /mingw/
+      expect(slines).to include("SHLD mine.dll")
+      expect(File.exists?("mine.dll")).to be_truthy
+    else
+      expect(slines).to include("SHLD libmine.so")
+      expect(File.exists?("libmine.so")).to be_truthy
+    end
 
     result = run_test
     expect(result.stderr).to eq ""
     expect(result.stdout).to eq ""
 
-    expect(`LD_LIBRARY_PATH=. ./test-shared.exe`).to match /Hi from one/
+    ld_library_path_prefix = (RUBY_PLATFORM =~ /mingw/ ? "" : "LD_LIBRARY_PATH=. ")
+    expect(`#{ld_library_path_prefix}./test-shared.exe`).to match /Hi from one/
     expect(`./test-static.exe`).to match /Hi from one/
   end
 
@@ -706,13 +717,18 @@ EOF
     result = run_test(rsconsfile: "shared_library_cxx.rb")
     expect(result.stderr).to eq ""
     slines = lines(result.stdout)
-    expect(slines).to include("SHLD libmine.so")
+    if RUBY_PLATFORM =~ /mingw/
+      expect(slines).to include("SHLD mine.dll")
+    else
+      expect(slines).to include("SHLD libmine.so")
+    end
 
     result = run_test(rsconsfile: "shared_library_cxx.rb")
     expect(result.stderr).to eq ""
     expect(result.stdout).to eq ""
 
-    expect(`LD_LIBRARY_PATH=. ./test-shared.exe`).to match /Hi from one/
+    ld_library_path_prefix = (RUBY_PLATFORM =~ /mingw/ ? "" : "LD_LIBRARY_PATH=. ")
+    expect(`#{ld_library_path_prefix}./test-shared.exe`).to match /Hi from one/
     expect(`./test-static.exe`).to match /Hi from one/
   end