Add test for capi

Author: zlonast

cabal-testsuite/PackageTests/FFI/ForeignOptsCapi/Main.hs

@@ -0,0 +1,15 @@
+{-# LANGUAGE CApiFFI #-}
+
+module Main where
+
+import Foreign.C (CInt (..))
+
+foreign import capi "clib.h myplus"
+  myplus :: CInt -> CInt -> IO CInt
+
+main :: IO ()
+main = do
+    result <- myplus 5 6
+    if (result == 11)
+        then putStrLn ("The result is " ++ show result)
+        else error ("Expected value 11, got " ++ show result)

cabal-testsuite/PackageTests/FFI/ForeignOptsCapi/README.md

@@ -0,0 +1,3 @@
+# ForeignOptsCapi
+
+This test case asserts that cabal passes `cc-options` to the C compiler when use `foreign import capi`.

cabal-testsuite/PackageTests/FFI/ForeignOptsCapi/cabal.out

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+# cabal v2-build
+Configuration is affected by the following files:
+- cabal.project
+Resolving dependencies...
+Build profile: -w ghc-<GHCVER> -O1
+In order, the following will be built:
+ - foreign-opts-capi-0.1 (exe:foreign-opts-capi-exe) (first run)
+Configuring executable 'foreign-opts-capi-exe' for foreign-opts-capi-0.1...
+Preprocessing executable 'foreign-opts-capi-exe' for foreign-opts-capi-0.1...
+Building executable 'foreign-opts-capi-exe' for foreign-opts-capi-0.1...
+# foreign-opts-capi foreign-opts-capi-exe
+The result is 11

cabal-testsuite/PackageTests/FFI/ForeignOptsCapi/cabal.project

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+packages: .

cabal-testsuite/PackageTests/FFI/ForeignOptsCapi/cabal.test.hs

@@ -0,0 +1,4 @@
+import Test.Cabal.Prelude
+main = cabalTest $ do
+    cabal "v2-build" ["foreign-opts-capi-exe"]
+    withPlan $ runPlanExe "foreign-opts-capi" "foreign-opts-capi-exe" []

cabal-testsuite/PackageTests/FFI/ForeignOptsCapi/cbits/clib.c

@@ -0,0 +1,7 @@
+#ifndef MYDEF
+#error "Did not get required MYDEF from cc-options"
+#endif
+
+static inline int myplus(int a, int b) {
+    return a + b;
+}

cabal-testsuite/PackageTests/FFI/ForeignOptsCapi/cbits/clib.h

@@ -0,0 +1,11 @@
+cabal-version:       3.0
+name:                foreign-opts-capi
+version:             0.1
+build-type:          Simple
+
+executable foreign-opts-capi-exe
+  main-is:             Main.hs
+  build-depends:       base
+  default-language:    Haskell2010
+  include-dirs:        cbits
+  cc-options:          -DMYDEF=1