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Don't depend on a standalone C preprocessor

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And get rid of the sed insanity.
This commit is contained in:
Přemysl Eric Janouch
2022-09-12 21:19:55 +02:00
parent a167ae40b3
commit 5cda848f94
4 changed files with 127 additions and 22 deletions
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32
CMakeLists.txt
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@@ -10,6 +10,14 @@ endif ()
# For custom modules
set (CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/liberty/cmake)
# Collect important build toggles for our simple preprocessor
# (cpp(1) isn't part of POSIX, otherwise we could reuse config.h)
set (options)
macro (add_option variable help value)
option (${ARGV})
list (APPEND options "${variable}=$<BOOL:${${variable}}>")
endmacro ()
# Dependencies
find_package (Ncursesw REQUIRED)
find_package (PkgConfig REQUIRED)
@@ -19,7 +27,7 @@ pkg_check_modules (curl REQUIRED libcurl)
include (AddThreads)
find_package (Termo QUIET NO_MODULE)
option (USE_SYSTEM_TERMO
add_option (USE_SYSTEM_TERMO
"Don't compile our own termo library, use the system one" ${Termo_FOUND})
if (USE_SYSTEM_TERMO)
if (NOT Termo_FOUND)
@@ -41,7 +49,7 @@ else ()
endif ()
pkg_check_modules (fftw fftw3 fftw3f)
option (WITH_FFTW "Use FFTW to enable spectrum visualisation" ${fftw_FOUND})
add_option (WITH_FFTW "Use FFTW to enable spectrum visualisation" ${fftw_FOUND})
if (WITH_FFTW)
if (NOT fftw_FOUND)
message (FATAL_ERROR "FFTW not found")
@@ -50,7 +58,8 @@ if (WITH_FFTW)
endif ()
pkg_check_modules (libpulse libpulse)
option (WITH_PULSE "Enable control of PulseAudio sink volume" ${libpulse_FOUND})
add_option (WITH_PULSE
"Enable PulseAudio sink volume control" ${libpulse_FOUND})
if (WITH_PULSE)
if (NOT libpulse_FOUND)
message (FATAL_ERROR "libpulse not found")
@@ -59,7 +68,7 @@ if (WITH_PULSE)
endif ()
pkg_check_modules (x11 x11 xrender xft fontconfig)
option (WITH_X11 "Use FFTW to enable spectrum visualisation" ${x11_FOUND})
add_option (WITH_X11 "Use FFTW to enable spectrum visualisation" ${x11_FOUND})
if (WITH_X11)
if (NOT x11_FOUND)
message (FATAL_ERROR "Some X11 libraries were not found")
@@ -99,20 +108,13 @@ configure_file (${PROJECT_SOURCE_DIR}/config.h.in
${PROJECT_BINARY_DIR}/config.h)
include_directories (${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})
# Assuming a Unix-compatible system with a standalone preprocessor
set (actions_list ${PROJECT_SOURCE_DIR}/nncmpp.actions)
set (actions_awk ${PROJECT_SOURCE_DIR}/nncmpp.actions.awk)
set (actions ${PROJECT_BINARY_DIR}/nncmpp-actions.h)
add_custom_command (OUTPUT ${actions}
COMMAND cpp -I${PROJECT_BINARY_DIR} -P ${actions_list}
| grep . | tr [[\n]] ^ | sed -ne [[h; s/,[^^]*/,/g]] -e [[s/$/COUNT/]]
-e [[s/[^^]*/\tACTION_&/g]] -e [[s/.*/enum action {\n&\n};\n/p]]
-e [[g; s/,[^^]*//g; y/_/-/]] -e [[s/[^^]\{1,\}/\t"&",/g]]
-e [[s/.*/static const char *g_action_names[] = {\n&};\n/p]]
-e [[g; s/[^^]*, *//g;]] -e [[s/[^^]\{1,\}/\t"&",/g]]
-e [[s/.*/static const char *g_action_descriptions[] = {\n&};/p]]
| tr ^ [[\n]] > ${actions}
COMMAND test -s ${actions}
DEPENDS ${actions_list} ${PROJECT_BINARY_DIR}/config.h VERBATIM)
COMMAND env LC_ALL=C ${options}
awk -f ${actions_awk} ${actions_list} > ${actions}
DEPENDS ${actions_awk} ${actions_list} VERBATIM)
# Build the main executable and link it
add_executable (${PROJECT_NAME} ${PROJECT_NAME}.c ${actions})