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Make the build work from a subdirectory dependency

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This commit is contained in:
Andrew Kesterson
2026-05-12 16:44:06 -04:00
parent 166a478e6a
commit 51b6b23b4c
2 changed files with 34 additions and 25 deletions
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41
CMakeLists.txt
View File

@@ -7,27 +7,37 @@ include(CMakePackageConfigHelpers)
set(AKERR_USE_STDLIB 1 CACHE BOOL "Use the C standard library")
set(akerror_install_cmakedir "${CMAKE_INSTALL_LIBDIR}/cmake/akerror")
set(SCRIPT ${CMAKE_SOURCE_DIR}/scripts/generrno.sh)
set(INFILE ${CMAKE_SOURCE_DIR}/include/akerror.tmpl.h)
set(OUTFILES ${CMAKE_SOURCE_DIR}/src/errno.c ${CMAKE_SOURCE_DIR}/include/akerror.h)
set(SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/scripts/generrno.sh)
set(INFILE ${CMAKE_CURRENT_SOURCE_DIR}/include/akerror.tmpl.h)
set(GENERATED_DIR ${CMAKE_CURRENT_BINARY_DIR}/generated)
set(GENERATED_ERRNO_C ${GENERATED_DIR}/src/errno.c)
set(GENERATED_AKERROR_H ${GENERATED_DIR}/include/akerror.h)
add_custom_command(
OUTPUT ${OUTFILES}
COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_SOURCE_DIR}
COMMAND /usr/bin/env bash ${SCRIPT} ${CMAKE_SOURCE_DIR}
OUTPUT ${GENERATED_ERRNO_C} ${GENERATED_AKERROR_H}
COMMAND ${CMAKE_COMMAND} -E make_directory ${GENERATED_DIR}
COMMAND /usr/bin/env bash
${SCRIPT}
${CMAKE_CURRENT_SOURCE_DIR}
${GENERATED_DIR}
DEPENDS ${SCRIPT} ${INFILE}
VERBATIM
)
set_source_files_properties(src/errno.c PROPERTIES GENERATED TRUE)
add_custom_target(generrno DEPENDS src/errno.c)
find_package(PkgConfig REQUIRED)
add_library(akerror SHARED
src/error.c
src/errno.c
${GENERATED_ERRNO_C}
)
add_dependencies(akerror generrno)
target_include_directories(akerror PUBLIC
$<BUILD_INTERFACE:${GENERATED_DIR}>/include
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
find_package(PkgConfig REQUIRED)
add_library(akerror::akerror ALIAS akerror)
target_compile_definitions(akerror
PUBLIC AKERR_USE_STDLIB=${AKERR_USE_STDLIB}
@@ -42,11 +52,6 @@ add_test(NAME err_cleanup COMMAND test_err_cleanup)
add_test(NAME err_trace COMMAND test_err_trace)
add_test(NAME err_improper_closure COMMAND test_err_improper_closure)
# Specify include directories for the library's headers (if applicable)
target_include_directories(akerror PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/>
)
target_link_libraries(test_err_catch PRIVATE akerror)
target_link_libraries(test_err_cleanup PRIVATE akerror)
target_link_libraries(test_err_trace PRIVATE akerror)

18
scripts/generrno.sh
View File

@@ -1,16 +1,20 @@
#!/bin/bash
srcdir=$1
rm -f ${srcdir}/src/errno.c
echo "#include <akerror.h>" >> ${srcdir}/src/errno.c
echo "#include <errno.h>" >> ${srcdir}/src/errno.c
echo "void akerr_init_errno(void) {" >> ${srcdir}/src/errno.c
outdir=$2
mkdir -p ${outdir}/src
mkdir -p ${outdir}/include
rm -f ${outdir}/src/errno.c
echo "#include <akerror.h>" >> ${outdir}/src/errno.c
echo "#include <errno.h>" >> ${outdir}/src/errno.c
echo "void akerr_init_errno(void) {" >> ${outdir}/src/errno.c
maxval=$(errno --list | cut -d ' ' -f 2 | sort -g | tail -n 1)
errno --list | while read LINE; do
define=$(echo "$LINE" | cut -d ' ' -f 1);
value=$(echo "$LINE" | cut -d ' ' -f 2);
desc=$(echo "$LINE" | cut -d ' ' -f 3-);
echo " akerr_name_for_status(${define}, \"${desc}\");" >> ${srcdir}/src/errno.c ;
echo " akerr_name_for_status(${define}, \"${desc}\");" >> ${outdir}/src/errno.c ;
done;
echo "}" >> ${srcdir}/src/errno.c
sed "s/#define AKERR_LAST_ERRNO_VALUE .*/#define AKERR_LAST_ERRNO_VALUE ${maxval}/" ${srcdir}/include/akerror.tmpl.h > ${srcdir}/include/akerror.h
echo "}" >> ${outdir}/src/errno.c
sed "s/#define AKERR_LAST_ERRNO_VALUE .*/#define AKERR_LAST_ERRNO_VALUE ${maxval}/" ${srcdir}/include/akerror.tmpl.h > ${outdir}/include/akerror.h