Try with temporary symlinks for gcc and g++ that are foundable in PATH

Signed-off-by: Martin Tzvetanov Grigorov <mgrigorov@apache.org>

recipes/mrtrix3/build.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-set -xe
+set -x
 
 export CFLAGS="${CFLAGS} -idirafter ${PREFIX}/include" 
 export LDFLAGS="${LDFLAGS} -L${PREFIX}/lib"
@@ -9,9 +9,15 @@ export EIGEN_CFLAGS="-idirafter ${PREFIX}/include/eigen3"
 
 mkdir -p "${PREFIX}"/{bin,lib,share}
 
-CC=${CC} CXX=${CXX} CFLAGS=${CXXFLAGS} ./configure -conda 
+ln -s ${CC} ${CONDA_PREFIX}/bin/gcc
+ln -s ${CXX} ${CONDA_PREFIX}/bin/g++
+
+./configure -conda 
 ./build 
 cp -r bin lib share "${PREFIX}"
 
+unlink ${CONDA_PREFIX}/bin/g++
+unlink ${CONDA_PREFIX}/bin/gcc
+
 # debug
 ls -la bin/