build: Remove C compiler

There isn't a single .c file in the project. It just added bloat

CMakeLists.txt

@@ -20,7 +20,7 @@ if(ENABLE_CCACHE)
   endif()
 endif()
 
-project(polybar C CXX)
+project(polybar CXX)
 
 # Extract version information from version.txt. The first line that looks like
 # a version string is used, so the file supports comments

build.sh

@@ -149,21 +149,17 @@ set_build_opts() {
 
 
   CXX="c++"
-  CC="cc"
 
   if [[ "$USE_GCC" == OFF ]]; then
     if command -v clang++ >/dev/null; then
       msg "Using compiler: clang++/clang"
       CXX="clang++"
-      CC="clang"
     elif command -v g++ >/dev/null; then
       msg "Using compiler: g++/gcc"
       CXX="g++"
-      CC="gcc"
     fi
   else
     CXX="g++"
-    CC="gcc"
   fi
 }
 
@@ -189,7 +185,6 @@ main() {
 
   msg "Executing cmake command"
   cmake                                       \
-    -DCMAKE_C_COMPILER="${CC}"                \
     -DCMAKE_CXX_COMPILER="${CXX}"             \
     -DENABLE_ALSA:BOOL="${ENABLE_ALSA}"       \
     -DENABLE_PULSEAUDIO:BOOL="${ENABLE_PULSEAUDIO}"\

cmake/01-core.cmake

@@ -97,23 +97,18 @@ endif()
 # Custom build type ; SANITIZE
 SET(CMAKE_CXX_FLAGS_SANITIZE "-O0 -g -fsanitize=address -fsanitize=undefined -fno-omit-frame-pointer -fno-optimize-sibling-calls"
   CACHE STRING "Flags used by the C++ compiler during sanitize builds." FORCE)
-SET(CMAKE_C_FLAGS_SANITIZE ""
-  CACHE STRING "Flags used by the C compiler during sanitize builds." FORCE)
 SET(CMAKE_EXE_LINKER_FLAGS_SANITIZE ""
   CACHE STRING "Flags used for linking binaries during sanitize builds." FORCE)
 SET(CMAKE_SHARED_LINKER_FLAGS_SANITIZE ""
   CACHE STRING "Flags used by the shared libraries linker during sanitize builds." FORCE)
 MARK_AS_ADVANCED(
   CMAKE_CXX_FLAGS_SANITIZE
-  CMAKE_C_FLAGS_SANITIZE
   CMAKE_EXE_LINKER_FLAGS_SANITIZE
   CMAKE_SHARED_LINKER_FLAGS_SANITIZE)
 
 # Custom build type ; Coverage
 SET(CMAKE_CXX_FLAGS_COVERAGE
   "${CMAKE_CXX_FLAGS_DEBUG} ${CMAKE_CXX_FLAGS_COVERAGE} --coverage")
-SET(CMAKE_C_FLAGS_COVERAGE
-  "${CMAKE_C_FLAGS_DEBUG} ${CMAKE_C_FLAGS_COVERAGE} --coverage")
 SET(CMAKE_EXE_LINKER_FLAGS_COVERAGE
   "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${CMAKE_EXE_LINKER_FLAGS_COVERAGE}")
 SET(CMAKE_SHARED_LINKER_FLAGS_COVERAGE

cmake/05-summary.cmake

@@ -5,7 +5,6 @@
 message(STATUS " Build:")
 message_colored(STATUS "   Version: ${APP_VERSION}" "32;1")
 message_colored(STATUS "   Type: ${CMAKE_BUILD_TYPE}" "37;2")
-message_colored(STATUS "   CC: ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}" "37;2")
 message_colored(STATUS "   CXX: ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}" "37;2")
 message_colored(STATUS "   LD: ${CMAKE_LINKER} ${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}" "37;2")
 

common/travis/configure.sh

@@ -24,7 +24,6 @@ if [ "$POLYBAR_BUILD_TYPE" == "minimal" ]; then
 fi
 
 cmake \
-  -DCMAKE_C_COMPILER="${CC}" \
   -DCMAKE_CXX_COMPILER="${CXX}" \
   -DCMAKE_CXX_FLAGS="${CXXFLAGS}" \
   -DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \

common/travis/summary.sh

@@ -2,15 +2,11 @@
 echo "${CXX} --version"
 eval "${CXX} --version"
 
-echo "${CC} --version"
-eval "${CC} --version"
-
 echo "cmake --version"
 cmake --version
 
 echo "PATH=${PATH}"
 echo "CXX=${CXX}"
-echo "CC=${CC}"
 echo "CXXFLAGS=${CXXFLAGS}"
 echo "LDFLAGS=${LDFLAGS}"
 echo "LD_LIBRARY_PATH=${LD_LIBRARY_PATH}"