Simplify RapidCheck configure

No more `RAPIDCHECK_HEADERS`!

Makefile.config.in

@@ -29,7 +29,6 @@ LOWDOWN_LIBS = @LOWDOWN_LIBS@
 OPENSSL_LIBS = @OPENSSL_LIBS@
 PACKAGE_NAME = @PACKAGE_NAME@
 PACKAGE_VERSION = @PACKAGE_VERSION@
-RAPIDCHECK_HEADERS = @RAPIDCHECK_HEADERS@
 SHELL = @bash@
 SODIUM_LIBS = @SODIUM_LIBS@
 SQLITE3_LIBS = @SQLITE3_LIBS@

configure.ac

@@ -353,27 +353,8 @@ AS_IF([test "$ENABLE_UNIT_TESTS" == "yes"],[
 # Look for gtest.
 PKG_CHECK_MODULES([GTEST], [gtest_main])
 
-
 # Look for rapidcheck.
-AC_ARG_VAR([RAPIDCHECK_HEADERS], [include path of gtest headers shipped by RAPIDCHECK])
-# No pkg-config yet, https://github.com/emil-e/rapidcheck/issues/302
-AC_LANG_PUSH(C++)
-AC_SUBST(RAPIDCHECK_HEADERS)
-[CXXFLAGS="-I $RAPIDCHECK_HEADERS $CXXFLAGS"]
-[LIBS="-lrapidcheck -lgtest $LIBS"]
-AC_CHECK_HEADERS([rapidcheck/gtest.h], [], [], [#include <gtest/gtest.h>])
-dnl AC_CHECK_LIB doesn't work for C++ libs with mangled symbols
-AC_LINK_IFELSE([
-    AC_LANG_PROGRAM([[
-      #include <gtest/gtest.h>
-      #include <rapidcheck/gtest.h>
-    ]], [[
-      return RUN_ALL_TESTS();
-    ]])
-  ],
-  [],
-  [AC_MSG_ERROR([librapidcheck is not found.])])
-AC_LANG_POP(C++)
+PKG_CHECK_MODULES([RAPIDCHECK], [rapidcheck rapidcheck_gtest])
 
 ])
 

doc/internal-api/doxygen.cfg.in

@@ -81,7 +81,7 @@ EXPAND_ONLY_PREDEF     = YES
 # RECURSIVE has no effect here.
 # This tag requires that the tag SEARCH_INCLUDES is set to YES.
 
-INCLUDE_PATH           = @RAPIDCHECK_HEADERS@
+INCLUDE_PATH           =
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The

package.nix

@@ -309,7 +309,7 @@ in {
   ] ++ lib.optional (doBuild && stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
        "LDFLAGS=-fuse-ld=gold"
     ++ lib.optional (doBuild && stdenv.hostPlatform.isStatic) "--enable-embedded-sandbox-shell"
-    ++ lib.optional buildUnitTests "RAPIDCHECK_HEADERS=${lib.getDev rapidcheck}/extras/gtest/include";
+    ;
 
   enableParallelBuilding = true;