Cygwin build is non-functional

[MayaPosch]

According to the project README, it should be possible to build the SDK on Windows using Cygwin. After spending half the day on trying to resolve various dependencies and issues, I had to give up on trying to make it work.

Unless a guide can be added for building the SDK under Windows, the mention of Cygwin should be removed from the project as it's clearly not a functional port.

[Juppit]

Try to add the following lines to crosstool-config-overrides:

# to prevent segfault on Cygwin
CT_CC_GCC_DISABLE_PCH=y
# for GDB on Cygwin64
CT_GDB_CROSS_EXTRA_CONFIG_ARRAY=--disable-tui

And then try it with Cygwin again.

[MayaPosch]

Thank you, that actually allows me to build the toolchain. After this I run into another error, though:

configure:6132: result: no configure:6149: checking ncurses/ncurses.h usability configure:6149: gcc -c -g -O2 conftest.c >&5 configure:6149: $? = 0 configure:6149: result: yes configure:6149: checking ncurses/ncurses.h presence configure:6149: gcc -E conftest.c configure:6149: $? = 0 configure:6149: result: yes configure:6149: checking for ncurses/ncurses.h configure:6149: result: yes configure:6162: checking for library containing initscr configure:6193: gcc -o conftest.exe -g -O2 conftest.c >&5 /tmp/ccYtmrGG.o: In function main': /home/Maya/esp-open-sdk/crosstool-NG/conftest.c:37: undefined reference toinitscr' /home/Maya/esp-open-sdk/crosstool-NG/conftest.c:37:(.text.startup+0xa): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `initscr' collect2: error: ld returned 1 exit status configure:6193: $? = 1 configure: failed program was:	/ confdefs.h /	#define PACKAGE_NAME "crosstool-NG"	#define PACKAGE_TARNAME "crosstool-ng"	#define PACKAGE_VERSION "crosstool-ng-1.22.0-60-g37b07f6f"	#define PACKAGE_STRING "crosstool-NG crosstool-ng-1.22.0-60-g37b07f6f"	#define PACKAGE_BUGREPORT "crossgcc@sourceware.org"	#define PACKAGE_URL ""	#define STDC_HEADERS 1	#define HAVE_SYS_TYPES_H 1	#define HAVE_SYS_STAT_H 1	#define HAVE_STDLIB_H 1	#define HAVE_STRING_H 1	#define HAVE_MEMORY_H 1	#define HAVE_STRINGS_H 1	#define HAVE_INTTYPES_H 1	#define HAVE_STDINT_H 1	#define HAVE_UNISTD_H 1	#define HAVE_STDLIB_H 1	#define HAVE_MALLOC 1	#define HAVE_STDLIB_H 1	#define HAVE_REALLOC 1	#define HAVE_ALLOCA_H 1	#define HAVE_ALLOCA 1	#define HAVE_NCURSES_NCURSES_H 1	/ end confdefs.h. /
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char initscr ();
int
main ()
{
return initscr ();
;
return 0;
}

configure:6193: gcc -o conftest.exe -g -O2 conftest.c -lncursesw >&5 configure:6193: $? = 0 configure:6210: result: -lncursesw configure:6221: checking for library containing tgetent configure:6252: gcc -o conftest.exe -g -O2 conftest.c -lncursesw >&5 configure:6252: $? = 0 configure:6269: result: none required configure:6481: creating ./config.status

It's possible that some dependency is missing, as they were not listed for Cygwin.

[Juppit]

Maybe: apt-cyg install ncurses libncurses-devel

[MayaPosch]

Both ncurses and libncurses-devel are installed.