On 12/11/25 1:52 AM, Peter Damianov wrote:
This patch adds support for compiling Windows resource files (.rc) and pre-compiled resource files (.res) directly through the GCC driver on PECOFF targets.Previously, users had to manually invoke windres to compile resource files before linking: windres -o resource.o resource.rc gcc main.c resource.o -o program.exe With this patch, GCC can handle resource files automatically: gcc main.c resource.rc -o program.exe gcc main.c resource.res -o program.exe Now, for an explanation of each line of the spec: If any of -E -M or -MM were passed, do nothing. No object files are output. "%{!E:%{!M:%{!MM:windres Add -J so that windres does not perform autodetection of input type Add -O so that the output type is always COFF -J rc -O coff \ For multilib configurations, tell windres to write out the correct COFF format. - If -m32 is specified, use pe-i386 format - If -m64 is specified, use pe-x86_64 format - If neither are specified, use the correct default for the target This is defined in WINDRES_FORMAT_SPEC which expands to: For 64-bit: "%{m32:-F pe-i386;m64|!m32:-F pe-x86-64}" For 32-bit: "%{m64:-F pe-x86-64;m32|!m64:-F pe-i386}" Pass through -I -D -U on to windres, because it supports them. %{I*:-I%*} %{D*:-D%*} %{U*:-U%*} \ If -c is passed, pass through -o to windres, if it was specified. Otherwise, output to the input basename with .o suffix. Else, output to a temp file that will be deleted after linking. %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O} %i}}}", gcc/ChangeLog: PR driver/108866 * gcc.cc (default_compilers): Add EXTRA_DEFAULT_COMPILERS so the config of a target can add an extra compiler spec to default_compilers. * config/i386/cygming.h (WINDRES_FORMAT_SPEC): New macro to handle PE format selection based on TARGET_64BIT_DEFAULT and -m32/-m64 flags. (EXTRA_DEFAULT_COMPILERS): Add spec for windres. * config/aarch64/cygming.h (EXTRA_DEFAULT_COMPILERS): Likewise. Signed-off-by: Peter Damianov <[email protected]>
Thanks, pushed to master branch.
