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Linking starts before any compilation resulting in undefined reference to main function.

techie-guy opened this issue · comments

commented

What seems to be the problem?
Linking starts before any compilation resulting in undefined reference to main function. This problem occurs only If I use the Native platform. It works fine for the Web platform.

The output:
On Running make config=debug_native

==== Building test-app (debug_native) ====
Creating bin/Debug-Native/test-app
Linking test-app
clang: error: no input files
make[1]: *** [test-app.make:183: bin/Debug-Native/test-app/test-app] Error 1
make: *** [Makefile:36: test-app] Error 2

On Running make config=debug_web

==== Building test-app (debug_web) ====
Creating bin/Debug-Web/test-app/obj
main.c
Linking test-app

What did you expect to happen?
Compilation of the source files should happen first...

What have you tried so far?
...

How can we reproduce this?
The premake5 script. I am using the emscripten module

require("emscripten")

workspace "test-app"
	startproject "test-app"

	configurations { "Debug", "Release" }
	platforms { "Native", "Web" }

	filter { "platforms:Native" }
		toolset "clang"
	filter { "platforms:Web" }
	    toolset "emcc"

	outputdir = "%{cfg.buildcfg}-%{cfg.platform}"


project "test-app"
	kind "ConsoleApp"
	language "C"
	targetdir "bin/%{outputdir}/%{prj.name}"
	objdir "bin/%{outputdir}/%{prj.name}/obj"
	location "."

	filter { "platforms:Native" }
		defines
		{
			"_PLATFORM_NATIVE"
		}

	filter { "platforms:Web" }
		targetextension ".html"

		defines
		{
			"_PLATFORM_WEB"
		}

	files 
	{ 
		"main.c",
	}

	filter "configurations:Debug"
		defines { "DEBUG" }
		symbols "On"

	filter "configurations:Release"
		defines { "NDEBUG" }
		optimize "On"
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What version of Premake are you using?

premake5 (Premake Build Script Generator) 5.0.0-dev
commented

Can you share the generated makefile?

commented

I have updated the premake5 script as the earlier one didn't reproduce the issue

commented

Also here's the generated test-app.make

# Alternative GNU Make project makefile autogenerated by Premake

ifndef config
  config=debug_native
endif

ifndef verbose
  SILENT = @
endif

.PHONY: clean prebuild

SHELLTYPE := posix
ifeq (.exe,$(findstring .exe,$(ComSpec)))
	SHELLTYPE := msdos
endif

# Configurations
# #############################################

INCLUDES +=
FORCE_INCLUDE +=
ALL_CPPFLAGS += $(CPPFLAGS) -MD -MP $(DEFINES) $(INCLUDES)
ALL_RESFLAGS += $(RESFLAGS) $(DEFINES) $(INCLUDES)
LIBS +=
LDDEPS +=
ALL_LDFLAGS += $(LDFLAGS)
LINKCMD = $(CC) -o "$@" $(OBJECTS) $(RESOURCES) $(ALL_LDFLAGS) $(LIBS)
define PREBUILDCMDS
endef
define PRELINKCMDS
endef
define POSTBUILDCMDS
endef

ifeq ($(config),debug_native)
ifeq ($(origin CC), default)
  CC = clang
endif
ifeq ($(origin CXX), default)
  CXX = clang++
endif
ifeq ($(origin AR), default)
  AR = ar
endif
TARGETDIR = bin/Debug-Native/test-app
TARGET = $(TARGETDIR)/test-app
OBJDIR = bin/Debug-Native/test-app/obj
DEFINES += -D_PLATFORM_NATIVE -DDEBUG
ALL_CFLAGS += $(CFLAGS) $(ALL_CPPFLAGS) -g
ALL_CXXFLAGS += $(CXXFLAGS) $(ALL_CPPFLAGS) -g

else ifeq ($(config),debug_web)
ifeq ($(origin CC), default)
  CC = emcc
endif
ifeq ($(origin CXX), default)
  CXX = em++
endif
ifeq ($(origin AR), default)
  AR = emar
endif
TARGETDIR = bin/Debug-Web/test-app
TARGET = $(TARGETDIR)/test-app.html
OBJDIR = bin/Debug-Web/test-app/obj
DEFINES += -D_PLATFORM_WEB -DDEBUG
ALL_CFLAGS += $(CFLAGS) $(ALL_CPPFLAGS) -g
ALL_CXXFLAGS += $(CXXFLAGS) $(ALL_CPPFLAGS) -g

else ifeq ($(config),release_native)
ifeq ($(origin CC), default)
  CC = clang
endif
ifeq ($(origin CXX), default)
  CXX = clang++
endif
ifeq ($(origin AR), default)
  AR = ar
endif
TARGETDIR = bin/Release-Native/test-app
TARGET = $(TARGETDIR)/test-app
OBJDIR = bin/Release-Native/test-app/obj
DEFINES += -D_PLATFORM_NATIVE -DNDEBUG
ALL_CFLAGS += $(CFLAGS) $(ALL_CPPFLAGS) -O2
ALL_CXXFLAGS += $(CXXFLAGS) $(ALL_CPPFLAGS) -O2

else ifeq ($(config),release_web)
ifeq ($(origin CC), default)
  CC = emcc
endif
ifeq ($(origin CXX), default)
  CXX = em++
endif
ifeq ($(origin AR), default)
  AR = emar
endif
TARGETDIR = bin/Release-Web/test-app
TARGET = $(TARGETDIR)/test-app.html
OBJDIR = bin/Release-Web/test-app/obj
DEFINES += -D_PLATFORM_WEB -DNDEBUG
ALL_CFLAGS += $(CFLAGS) $(ALL_CPPFLAGS) -O2
ALL_CXXFLAGS += $(CXXFLAGS) $(ALL_CPPFLAGS) -O2

endif

# Per File Configurations
# #############################################


# File sets
# #############################################

GENERATED :=
OBJECTS :=

ifeq ($(config),debug_web)
GENERATED += $(OBJDIR)/main.o
OBJECTS += $(OBJDIR)/main.o

else ifeq ($(config),release_web)
GENERATED += $(OBJDIR)/main.o
OBJECTS += $(OBJDIR)/main.o

endif

# Rules
# #############################################

all: $(TARGET)
	@:

$(TARGETDIR):
	@echo Creating $(TARGETDIR)
ifeq (posix,$(SHELLTYPE))
	$(SILENT) mkdir -p $(TARGETDIR)
else
	$(SILENT) mkdir $(subst /,\\,$(TARGETDIR))
endif

$(OBJDIR):
	@echo Creating $(OBJDIR)
ifeq (posix,$(SHELLTYPE))
	$(SILENT) mkdir -p $(OBJDIR)
else
	$(SILENT) mkdir $(subst /,\\,$(OBJDIR))
endif

clean:
	@echo Cleaning test-app
ifeq (posix,$(SHELLTYPE))
	$(SILENT) rm -f  $(TARGET)
	$(SILENT) rm -rf $(GENERATED)
	$(SILENT) rm -rf $(OBJDIR)
else
	$(SILENT) if exist $(subst /,\\,$(TARGET)) del $(subst /,\\,$(TARGET))
	$(SILENT) if exist $(subst /,\\,$(GENERATED)) del /s /q $(subst /,\\,$(GENERATED))
	$(SILENT) if exist $(subst /,\\,$(OBJDIR)) rmdir /s /q $(subst /,\\,$(OBJDIR))
endif

prebuild: | $(OBJDIR)
	$(PREBUILDCMDS)

ifneq (,$(PCH))
$(OBJECTS): $(GCH) | $(PCH_PLACEHOLDER)
$(GCH): $(PCH) | prebuild
	@echo $(notdir $<)
	$(SILENT) $(CC) -x c-header $(ALL_CFLAGS) -o "$@" -MF "$(@:%.gch=%.d)" -c "$<"
$(PCH_PLACEHOLDER): $(GCH) | $(OBJDIR)
ifeq (posix,$(SHELLTYPE))
	$(SILENT) touch "$@"
else
	$(SILENT) echo $null >> "$@"
endif
else
$(OBJECTS): | prebuild
endif


ifeq ($(config),debug_native)
$(TARGET): $(OBJECTS) $(LDDEPS) | $(TARGETDIR)
	$(PRELINKCMDS)
	@echo Linking test-app
	$(SILENT) $(LINKCMD)
	$(POSTBUILDCMDS)


else ifeq ($(config),debug_web)
$(TARGET): $(GENERATED) $(OBJECTS) $(LDDEPS) | $(TARGETDIR)
	$(PRELINKCMDS)
	@echo Linking test-app
	$(SILENT) $(LINKCMD)
	$(POSTBUILDCMDS)


else ifeq ($(config),release_native)
$(TARGET): $(OBJECTS) $(LDDEPS) | $(TARGETDIR)
	$(PRELINKCMDS)
	@echo Linking test-app
	$(SILENT) $(LINKCMD)
	$(POSTBUILDCMDS)


else ifeq ($(config),release_web)
$(TARGET): $(GENERATED) $(OBJECTS) $(LDDEPS) | $(TARGETDIR)
	$(PRELINKCMDS)
	@echo Linking test-app
	$(SILENT) $(LINKCMD)
	$(POSTBUILDCMDS)


endif

# File Rules
# #############################################

ifeq ($(config),debug_web)
$(OBJDIR)/main.o: main.c
	@echo "$(notdir $<)"
	$(SILENT) $(CC) $(ALL_CFLAGS) $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"

else ifeq ($(config),release_web)
$(OBJDIR)/main.o: main.c
	@echo "$(notdir $<)"
	$(SILENT) $(CC) $(ALL_CFLAGS) $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"

endif

-include $(OBJECTS:%.o=%.d)
ifneq (,$(PCH))
  -include $(PCH_PLACEHOLDER).d
endif
commented

You need to close/reset the filter, as the filters affect everything after it. When you're done applying filters, use filter {} and that should fix it.

commented

Ohh, I see. Thanks for your help!