make static command doesnot work on Windows ,with minGW

[dogeFu]

I did as the README says. use "make static" command to build this library.But it failed.

this is the error:
./configure
process_begin: CreateProcess(NULL, env bash D:\Librarys\libimagequant-master\configure, ...) failed.
make (e=2):
mingw32-make: *** No rule to make target 'config.mk', needed by 'pam.o'. Stop.

I am not good at Makefile build system.Don't know what is going on.

Any help will be appreciated~

BTW, msvc brunch build fail with VS2015 too...

[kornelski]

Is that all output you have?

The second error "No rule to make target 'config.mk'" just means the ./configure didn't run.

However, "process_begin: CreateProcess(NULL, env bash D:\Librarys\libimagequant-master\configure, ...) failed." doesn't really mean anything. There are dozens of ways in which ./configure can fail, so it's hard to say what's going on without more information.

---

Another option is to use Rust/Cargo to build it for MSVC (note that MinGW is not compatible with MSVC projects).

I'm assuming you're building 64-bit executable for 64-bit Windows:

• Run https://static.rust-lang.org/rustup/dist/x86_64-pc-windows-msvc/rustup-init.exe (say yes to default config)
• Reboot (to update PATH otherwise cargo.exe won't be found)
• Run cargo build --release in libimagequant directory. It will create target/release/libimagequant.lib (or *.a or similar).

[dogeFu]

Is that all output you have?

The second error "No rule to make target 'config.mk'" just means the ./configure didn't run.

However, "process_begin: CreateProcess(NULL, env bash D:\Librarys\libimagequant-master\configure, ...) failed." doesn't really mean anything. There are dozens of ways in which ./configure can fail, so it's hard to say what's going on without more information.

Another option is to use Rust/Cargo to build it for MSVC (note that MinGW is not compatible with MSVC projects).

I'm assuming you're building 64-bit executable for 64-bit Windows:

* Run https://static.rust-lang.org/rustup/dist/x86_64-pc-windows-msvc/rustup-init.exe (say yes to default config)

* Reboot (to update `PATH` otherwise `cargo.exe` won't be found)

* Run `cargo build --release` in libimagequant directory. It will create `target/release/libimagequant.lib` (or `*.a` or similar).

Yes,that was all I got.
I think minGW's make command doesn't work in this project, or there muse be something I did wrong.
I build a Rust version too, but, it's a 64-bit lib. I need a 32-bit lib for my vc++ project.

[dogeFu]

I use MSYS2 to build it, and get a 32-bit "libimagequant.a" file ;

But when I build my project, which links libimagequant.a and libgcc.a as the REMEAD says.
this error shows :

LNK2019：unresolved external symbol ___getreent, referenced at _liq_crash_if_invalid_handle_pointer_given.constprop.19
LNK2019：unresolved external symbol _vsnprintf, referenced at _liq_verbose_printf
LNK2001：unresolved external symbol _vsnprintf.

looks like this issue : https://github.com/kornelski/pngquant/issues/41

I tried as the issue said, link a "libmingwex.a" with my project , It didn't work...

Windows is just so unflattering , isn't it...

[kornelski]

These uresolved symbols look like you've tried to use MinGW library with Visual Studio. They are incompatible in many subtle, but crashy ways. You can only use MinGW gcc with MinGW-only projects. And for Visual Studio projects you must use Microsoft's compiler.

If you have an existing Visual Studio project, then add the .c files to it.

[dogeFu]

I buiild the msvc-branch with openMP option turn off , and it works.

thanks for your help.