Error on make (macOS 11.6.5 BigSur)

[St0nehead]

BigMac:~ richie$ cd dump1090
BigMac:dump1090 richie$ make
Building with:
Version string: unknown
Architecture: x86_64
DSP mix: x86
RTLSDR support: no
BladeRF support: no
HackRF support: no
LimeSDR support: no
cc -I. -D_POSIX_C_SOURCE=200112L -DMODES_DUMP1090_VERSION="unknown" -DMODES_DUMP1090_VARIANT="dump1090-fa" -DMISSING_NANOSLEEP -DENABLE_CPUFEATURES -Icpu_features/include -DSTARCH_MIX_X86 -O3 -g -std=c11 -fno-common -Wall -Wmissing-declarations -Werror -W -c dump1090.c -o dump1090.o
cc -I. -D_POSIX_C_SOURCE=200112L -DMODES_DUMP1090_VERSION="unknown" -DMODES_DUMP1090_VARIANT="dump1090-fa" -DMISSING_NANOSLEEP -DENABLE_CPUFEATURES -Icpu_features/include -DSTARCH_MIX_X86 -O3 -g -std=c11 -fno-common -Wall -Wmissing-declarations -Werror -W -c anet.c -o anet.o
cc -I. -D_POSIX_C_SOURCE=200112L -DMODES_DUMP1090_VERSION="unknown" -DMODES_DUMP1090_VARIANT="dump1090-fa" -DMISSING_NANOSLEEP -DENABLE_CPUFEATURES -Icpu_features/include -DSTARCH_MIX_X86 -O3 -g -std=c11 -fno-common -Wall -Wmissing-declarations -Werror -W -c interactive.c -o interactive.o
cc -I. -D_POSIX_C_SOURCE=200112L -DMODES_DUMP1090_VERSION="unknown" -DMODES_DUMP1090_VARIANT="dump1090-fa" -DMISSING_NANOSLEEP -DENABLE_CPUFEATURES -Icpu_features/include -DSTARCH_MIX_X86 -O3 -g -std=c11 -fno-common -Wall -Wmissing-declarations -Werror -W -c mode_ac.c -o mode_ac.o
cc -I. -D_POSIX_C_SOURCE=200112L -DMODES_DUMP1090_VERSION="unknown" -DMODES_DUMP1090_VARIANT="dump1090-fa" -DMISSING_NANOSLEEP -DENABLE_CPUFEATURES -Icpu_features/include -DSTARCH_MIX_X86 -O3 -g -std=c11 -fno-common -Wall -Wmissing-declarations -Werror -W -c mode_s.c -o mode_s.o
cc -I. -D_POSIX_C_SOURCE=200112L -DMODES_DUMP1090_VERSION="unknown" -DMODES_DUMP1090_VARIANT="dump1090-fa" -DMISSING_NANOSLEEP -DENABLE_CPUFEATURES -Icpu_features/include -DSTARCH_MIX_X86 -O3 -g -std=c11 -fno-common -Wall -Wmissing-declarations -Werror -W -c comm_b.c -o comm_b.o
cc -I. -D_POSIX_C_SOURCE=200112L -DMODES_DUMP1090_VERSION="unknown" -DMODES_DUMP1090_VARIANT="dump1090-fa" -DMISSING_NANOSLEEP -DENABLE_CPUFEATURES -Icpu_features/include -DSTARCH_MIX_X86 -O3 -g -std=c11 -fno-common -Wall -Wmissing-declarations -Werror -W -c net_io.c -o net_io.o
net_io.c:1086:15: error: implicit declaration of function 'alloca' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
buf = p = alloca(len);
^
net_io.c:1086:13: error: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Werror,-Wint-conversion]
buf = p = alloca(len);
^ ~~~~~~~~~~~
2 errors generated.
make: *** [net_io.o] Error 1

[JoeMatt]

FYI, I have a working makefile here.

#97 (comment)