I happened to run build with openssl but no tpm2 and ran into issues
like:
[313/1382] Compiling C object systemd-measure.p/src_boot_measure.c.o
FAILED: systemd-measure.p/src_boot_measure.c.o
cc -Isystemd-measure.p -I. -I.. -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I../src/libsystemd/sd-bus -I../src/libsystemd/sd-device -I../src/libsystemd/sd-event -I../src/libsystemd/sd-hwdb -I../src/libsystemd/sd-id128 -I../src/libsystemd/sd-journal -I../src/libsystemd/sd-netlink -I../src/libsystemd/sd-network -I../src/libsystemd/sd-resolve -Isrc/shared -I../src/shared -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -g -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=format-signedness -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -Werror=missing-declarations -Werror=missing-prototypes -fdiagnostics-show-option -fno-common -fno-strict-aliasing -fstack-protector -fstack-protector-strong -fvisibility=hidden --param=ssp-buffer-size=4 -fno-omit-frame-pointer -Werror=shadow -include config.h -DOPENSSL_LOAD_CONF -MD -MQ systemd-measure.p/src_boot_measure.c.o -MF systemd-measure.p/src_boot_measure.c.o.d -o systemd-measure.p/src_boot_measure.c.o -c ../src/boot/measure.c
../src/boot/measure.c: In function ‘verb_sign’:
../src/boot/measure.c:710:48: error: variable ‘c’ has initializer but incomplete type
710 | _cleanup_(tpm2_context_destroy) struct tpm2_context c = {};
[308/1382] Compiling C object systemd-pcrphase.p/src_boot_pcrphase.c.o
FAILED: systemd-pcrphase.p/src_boot_pcrphase.c.o
cc -Isystemd-pcrphase.p -I. -I.. -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I../src/libsystemd/sd-bus -I../src/libsystemd/sd-device -I../src/libsystemd/sd-event -I../src/libsystemd/sd-hwdb -I../src/libsystemd/sd-id128 -I../src/libsystemd/sd-journal -I../src/libsystemd/sd-netlink -I../src/libsystemd/sd-network -I../src/libsystemd/sd-resolve -Isrc/shared -I../src/shared -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -g -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=format-signedness -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -Werror=missing-declarations -Werror=missing-prototypes -fdiagnostics-show-option -fno-common -fno-strict-aliasing -fstack-protector -fstack-protector-strong -fvisibility=hidden --param=ssp-buffer-size=4 -fno-omit-frame-pointer -Werror=shadow -include config.h -DOPENSSL_LOAD_CONF -MD -MQ systemd-pcrphase.p/src_boot_pcrphase.c.o -MF systemd-pcrphase.p/src_boot_pcrphase.c.o.d -o systemd-pcrphase.p/src_boot_pcrphase.c.o -c ../src/boot/pcrphase.c
../src/boot/pcrphase.c: In function ‘determine_banks’:
../src/boot/pcrphase.c:117:24: error: unknown type name ‘TPMI_ALG_HASH’
117 | _cleanup_free_ TPMI_ALG_HASH *algs = NULL;
Guarding the utilites with HAVE_TPM2 fixes the issue for me.
This complements #24811.
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