I am trying to compile a C project using a nmake makefile on Windows with Visual Studio 2019. When I run the compilation commands manually in the Developer Command Prompt, everything works fine. However, when I try to use nmake, I encounter the following error:

LINK : fatal error LNK1104: cannot open file 'LIBCMT.lib'
NMAKE : fatal error U1077: '"C:Program Files (x86)Microsoft Visual Studio2019ProfessionalVCToolsMSVC14.29.30133binHostX64x64cl.EXE"' : return code '0x2'
Stop.

Here is the relevant part of my makefile:

# Define variables
CC = cl
CFLAGS = /MT /I include          /nologo /D_CRT_SECURE_NO_WARNINGS         /W4 /Od /DDEBUG
LIB = lib
LIBFLAGS = /OUT:my_library.lib /nologo
SRC_DIR = src
INCLUDE_DIR = include
LIB_NAME = my_library
OBJ = my_library.obj
TARGET = my_program.exe

# Default target
all: $(TARGET)

# Rule to compile the library source file
$(OBJ): $(SRC_DIR)$(LIB_NAME).c
    @echo Compiling $(SRC_DIR)$(LIB_NAME).c
    $(CC) $(CFLAGS) /c $(SRC_DIR)$(LIB_NAME).c /Fo$(OBJ)

# Rule to create the static library
$(LIB_NAME).lib: $(OBJ)
    @echo Creating library $(LIB_NAME).lib
    $(LIB) $(LIBFLAGS) $(OBJ)

# Rule to compile the main program
$(TARGET): main.obj $(LIB_NAME).lib
    @echo Compiling and linking main.c to create $(TARGET)
    $(CC) /nologo /Fe$(TARGET) main.obj $(LIB_NAME).lib /link /LIBPATH:"C:Program Files (x86)Microsoft Visual Studio2019ProfessionalVCToolsMSVC14.29.30133libx64" /LIBPATH:"C:Program Files (x86)Windows Kits10lib10.0.19041.0ucrtx64" /LIBPATH:"C:Program Files (x86)Windows Kits10lib10.0.19041.0umx64"

# Rule to compile main.c
main.obj: main.c
    @echo Compiling main.c
    $(CC) $(CFLAGS) /c main.c /Fomain.obj

# Clean up intermediate files
clean:
    @echo Cleaning up...
    del $(OBJ) $(LIB_NAME).lib main.obj $(TARGET)

Environment:
Visual Studio 2019
Windows 10
Running commands in the “Developer Command Prompt for Visual Studio 2019”

Manual Commands:
When I run the following commands manually, they work without any issues:

cl /MT /I include /nologo /D_CRT_SECURE_NO_WARNINGS /W4 /Od /DDEBUG /c srcmy_library.c /Fomy_library.obj
lib /OUT:my_library.lib /nologo my_library.obj
cl /MT /I include /nologo /D_CRT_SECURE_NO_WARNINGS /W4 /Od /DDEBUG /c main.c /Fomain.obj
cl /nologo /Fe my_program.exe main.obj my_library.lib /link /LIBPATH:”C:Program Files (x86)Microsoft Visual Studio2019ProfessionalVCToolsMSVC14.29.30133libx64″ /LIBPATH:”C:Program Files (x86)Windows Kits10lib10.0.19041.0ucrtx64″ /LIBPATH:”C:Program Files (x86)Windows Kits10lib10.0.19041.0umx64″

Questions:

1.  Why does nmake fail to find LIBCMT.lib when the manual commands work perfectly?
2.  How can I ensure that nmake correctly finds and links LIBCMT.lib?

Any help or suggestions would be greatly appreciated. Thank you!