Tweak specs to all pass cleanly on MacOS

build_tests/library/Rsconscript

@@ -1,4 +1,7 @@
 env(echo: :command) do |env|
-  env.Program('library.exe', ['lib.a', 'three.c'])
-  env.Library("lib.a", ['one.c', 'two.c'], 'CPPFLAGS' => ['-Dmake_lib'])
+  env["LIBS"] << "mylib"
+  env["LIBPATH"] << "."
+  env.Program("library.exe", "one.c")
+  env.depends("library.exe", "libmylib.a")
+  env.Library("libmylib.a", ["two.c", "three.c"], "CPPFLAGS" => ["-Dmake_lib"])
 end

build_tests/library/one.c

@@ -1,8 +1,11 @@
 #include <stdio.h>
 
-#ifdef make_lib
+void two();
+void three();
+
 int main(int argc, char *argv[])
 {
+    two();
     printf("Library\n");
+    three();
 }
-#endif

build_tests/library/override_arcmd.rb

@@ -1,4 +1,4 @@
 env(echo: :command) do |env|
-  env["ARCMD"] = %w[ar rcf ${_TARGET} ${_SOURCES}]
+  env["ARCMD"] = %w[ar rcsu ${_TARGET} ${_SOURCES}]
   env.Library("lib.a", glob("*.c"))
 end

build_tests/library/three.c

@@ -0,0 +1,3 @@
+void three(void)
+{
+}

build_tests/library/two.c

@@ -0,0 +1,3 @@
+void two(void)
+{
+}

build_tests/simple/link_flag_change.rb

@@ -1,5 +1,6 @@
 env(echo: :command) do |env|
   env["LD"] = "gcc"
+  mkdir_p("libdir")
   env["LIBPATH"] += ["libdir"]
   env.Program('simple.exe', Dir['*.c'])
 end

build_tests/two_sources/two.c

@@ -1,3 +1,6 @@
 #ifdef ONE
 #error ONE should not be defined
 #endif
+void two(void)
+{
+}

spec/build_tests_spec.rb

@@ -565,14 +565,16 @@ EOF
     result = run_rscons
     expect(result.stderr).to eq ""
     verify_lines(lines(result.stdout), [
-      %r{gcc -c -o build/e.1/one.c.o -MMD -MF build/e.1/one.c.o.mf -Dmake_lib one.c},
       %r{gcc -c -o build/e.1/two.c.o -MMD -MF build/e.1/two.c.o.mf -Dmake_lib two.c},
-      %r{ar rcs lib.a build/e.1/one.c.o build/e.1/two.c.o},
-      %r{gcc -c -o build/e.1/three.c.o -MMD -MF build/e.1/three.c.o.mf three.c},
-      %r{gcc -o library.exe lib.a build/e.1/three.c.o},
+      %r{gcc -c -o build/e.1/three.c.o -MMD -MF build/e.1/three.c.o.mf -Dmake_lib three.c},
+      %r{ar rcs libmylib.a build/e.1/two.c.o build/e.1/three.c.o},
+      %r{gcc -c -o build/e.1/one.c.o -MMD -MF build/e.1/one.c.o.mf one.c},
+      %r{gcc -o library.exe build/e.1/one.c.o -L. -lmylib},
     ])
     expect(File.exists?("library.exe")).to be_truthy
-    expect(nr(`ar t lib.a`)).to eq "one.c.o\ntwo.c.o\n"
+    ar_t = nr(`ar t libmylib.a`)
+    expect(ar_t).to match %r{\btwo.c.o\b}
+    expect(ar_t).to match %r{\bthree.c.o\b}
   end
 
   it 'supports build hooks to override construction variables' do
@@ -1664,7 +1666,7 @@ EOF
       test_dir("library")
       result = run_rscons(args: %w[-f override_arcmd.rb])
       expect(result.stderr).to eq ""
-      verify_lines(lines(result.stdout), [%r{ar rcf lib.a build/e.1/one.c.o build/e.1/three.c.o build/e.1/two.c.o}])
+      verify_lines(lines(result.stdout), [%r{ar rcsu lib.a build/e.1/one.c.o build/e.1/three.c.o build/e.1/two.c.o}])
     end
 
     it "allows passing object files as sources" do
@@ -1709,7 +1711,7 @@ EOF
       ])
       expect(File.exist?("simple.exe")).to be_truthy
       expect(File.exist?("simple.size")).to be_truthy
-      expect(File.read("simple.size")).to match /text.*data.*bss/
+      expect(File.read("simple.size")).to match /text.*data/i
     end
   end