Fix CI

run_conan.py

@@ -19,6 +19,7 @@ def find_conan():
 
 
 def run_conan_profile_detect(conan):
+
     sp.run([conan, "profile", "detect"], stderr=sp.DEVNULL, stdout=sp.DEVNULL)
 
 
@@ -42,6 +43,18 @@ def main():
     if conan_home is not None:
         os.makedirs(conan_home, exist_ok=True)
 
+        cc = os.getenv("CC")
+        if cc is not None:
+            new_cc = os.path.join(conan_home, "gcc")
+            os.symlink(cc, new_cc)
+            os.environ["CC"] = new_cc
+
+        cxx = os.getenv("CXX")
+        if cxx is not None:
+            new_cxx = os.path.join(conan_home, "g++")
+            os.symlink(cc, new_cxx)
+            os.environ["CC"] = new_cxx
+
     run_conan_profile_detect(conan)
     run_conan_install(conan)
     print(conandeps_mk)

src/Makevars.win

@@ -1,13 +1,7 @@
 PWD := $(shell pwd)
 export CONAN_HOME := $(PWD)\conan-staging\.conan2
-CC := "$(shell "$(R_HOME)\bin\Rscript" -e 'Sys.which("gcc")')"
-CXX := "$(shell "$(R_HOME)\bin\Rscript" -e 'Sys.which("g++")')"
-
-SYMLINK_CC := $(shell ln -s "$CC" $(CONAN_HOME)/gcc)
-SYMLINK_CXX := $(shell ln -s "$CXX" $(CONAN_HOME)/g++)
-
-export CC := $(CONAN_HOME)/gcc
-export CXX := $(CONAN_HOME)g++
+export CC := "$(shell "$(R_HOME)\bin\Rscript" -e 'Sys.which("gcc")')"
+export CXX := "$(shell "$(R_HOME)\bin\Rscript" -e 'Sys.which("g++")')"
 
 CONANDEPS_MK := $(shell ..\run_conan.py)
 include $(CONANDEPS_MK)